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overflow: hidden; text-overflow: ellipsis; -webkit-line-clamp: 3; -webkit-box-orient: vertical; }</style><div class="col-xs-12 clearfix"><div class="u-floatLeft"><h1 class="PageHeader-title u-m0x u-fs30">Ion Chromatography</h1><div class="u-tcGrayDark">981 Followers</div><div class="u-tcGrayDark u-mt2x">Recent papers in <b>Ion Chromatography</b></div></div></div></div></div></div><div class="TabbedNavigation"><div class="container"><div class="row"><div class="col-xs-12 clearfix"><ul class="nav u-m0x u-p0x list-inline u-displayFlex"><li class="active"><a href="https://www.academia.edu/Documents/in/Ion_Chromatography">Top Papers</a></li><li><a href="https://www.academia.edu/Documents/in/Ion_Chromatography/MostCited">Most Cited Papers</a></li><li><a href="https://www.academia.edu/Documents/in/Ion_Chromatography/MostDownloaded">Most Downloaded Papers</a></li><li><a href="https://www.academia.edu/Documents/in/Ion_Chromatography/MostRecent">Newest Papers</a></li><li><a class="" href="https://www.academia.edu/People/Ion_Chromatography">People</a></li></ul></div><style type="text/css">ul.nav{flex-direction:row}@media(max-width: 567px){ul.nav{flex-direction:column}.TabbedNavigation li{max-width:100%}.TabbedNavigation li.active{background-color:var(--background-grey, #dddde2)}.TabbedNavigation li.active:before,.TabbedNavigation li.active:after{display:none}}</style></div></div></div><div class="container"><div class="row"><div class="col-xs-12"><div class="u-displayFlex"><div class="u-flexGrow1"><div class="works"><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_49651490" data-work_id="49651490" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/49651490/Determination_of_trace_metallic_impurities_in_high_purity_quartz_by_ion_chromatography">Determination of trace metallic impurities in high-purity quartz by ion chromatography</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">A method has been developed for the determination of relevant trace impurities (alkali, alkaline and transition metals) in high purity quartz by ion-chromatography. In situ reagent (HF) purification and simultaneous sample dissolution was... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_49651490" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">A method has been developed for the determination of relevant trace impurities (alkali, alkaline and transition metals) in high purity quartz by ion-chromatography. In situ reagent (HF) purification and simultaneous sample dissolution was achieved in a multichannel vapour phase digestion assembly. Twenty-one samples can be digested at a time in this vapour phase system. Significant decrease in the process blank levels for all the analytes was observed. Drastic reduction (250 times) of NH 4 + blank was achieved in the described vapour phase digestion, which enables the determination of trace concentration of sodium in high purity quartz. After volatilisation of the matrix and unreacted HF, the clear water leached solutions were injected into an ion-chromatograph equipped with conductivity detector for the determination of alkali and alkaline earth metals. In the case of transition metals, the trace residues were leached with 10 mM HCl and after separation on a mixed bed analytical column (IonPac CS5) were detected by spectrophotometry after post column derivatisation using 4-(2-pyridylazo)resorcinol (PAR). The accuracy of the result was checked by their comparison with those obtained by independent methods like inductively coupled plasma (ICP) MS and ICP atomic emission spectrometry. The achievable detection limits are between 0.4 ng/g (Li) and 22 ng/g (Mn). The application of the method to the determination of the above trace metals in two high-purity-grade quartz samples is demonstrated.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/49651490" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="7ee7de83e64db088fc741dce3d9aca05" rel="nofollow" data-download="{"attachment_id":67947412,"asset_id":49651490,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/67947412/download_file?st=MTc0MDkzMDYzMCw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="13065298" href="https://independent.academia.edu/ArunachalamJayaraman">Arunachalam Jayaraman</a><script data-card-contents-for-user="13065298" type="text/json">{"id":13065298,"first_name":"Arunachalam","last_name":"Jayaraman","domain_name":"independent","page_name":"ArunachalamJayaraman","display_name":"Arunachalam Jayaraman","profile_url":"https://independent.academia.edu/ArunachalamJayaraman?f_ri=15372","photo":"https://0.academia-photos.com/13065298/161762754/151497007/s65_arunachalam.jayaraman.png"}</script></span></span></li><li class="js-paper-rank-work_49651490 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="49651490"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 49651490, container: ".js-paper-rank-work_49651490", }); 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In situ reagent (HF) purification and simultaneous sample dissolution was achieved in a multichannel vapour phase digestion assembly. Twenty-one samples can be digested at a time in this vapour phase system. Significant decrease in the process blank levels for all the analytes was observed. Drastic reduction (250 times) of NH 4 + blank was achieved in the described vapour phase digestion, which enables the determination of trace concentration of sodium in high purity quartz. After volatilisation of the matrix and unreacted HF, the clear water leached solutions were injected into an ion-chromatograph equipped with conductivity detector for the determination of alkali and alkaline earth metals. In the case of transition metals, the trace residues were leached with 10 mM HCl and after separation on a mixed bed analytical column (IonPac CS5) were detected by spectrophotometry after post column derivatisation using 4-(2-pyridylazo)resorcinol (PAR). The accuracy of the result was checked by their comparison with those obtained by independent methods like inductively coupled plasma (ICP) MS and ICP atomic emission spectrometry. The achievable detection limits are between 0.4 ng/g (Li) and 22 ng/g (Mn). The application of the method to the determination of the above trace metals in two high-purity-grade quartz samples is demonstrated.","downloadable_attachments":[{"id":67947412,"asset_id":49651490,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":13065298,"first_name":"Arunachalam","last_name":"Jayaraman","domain_name":"independent","page_name":"ArunachalamJayaraman","display_name":"Arunachalam Jayaraman","profile_url":"https://independent.academia.edu/ArunachalamJayaraman?f_ri=15372","photo":"https://0.academia-photos.com/13065298/161762754/151497007/s65_arunachalam.jayaraman.png"}],"research_interests":[{"id":48,"name":"Engineering","url":"https://www.academia.edu/Documents/in/Engineering?f_ri=15372","nofollow":true},{"id":923,"name":"Technology","url":"https://www.academia.edu/Documents/in/Technology?f_ri=15372","nofollow":true},{"id":9095,"name":"Trace Metals","url":"https://www.academia.edu/Documents/in/Trace_Metals?f_ri=15372","nofollow":true},{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true},{"id":74607,"name":"Quartz","url":"https://www.academia.edu/Documents/in/Quartz?f_ri=15372"},{"id":224577,"name":"Trace Elements","url":"https://www.academia.edu/Documents/in/Trace_Elements?f_ri=15372"},{"id":246560,"name":"High Pressure Liquid Chromatography","url":"https://www.academia.edu/Documents/in/High_Pressure_Liquid_Chromatography?f_ri=15372"},{"id":255058,"name":"Metals","url":"https://www.academia.edu/Documents/in/Metals?f_ri=15372"},{"id":260118,"name":"CHEMICAL SCIENCES","url":"https://www.academia.edu/Documents/in/CHEMICAL_SCIENCES?f_ri=15372"},{"id":549280,"name":"Reproducibility of Results","url":"https://www.academia.edu/Documents/in/Reproducibility_of_Results?f_ri=15372"},{"id":901876,"name":"Sensitivity and Specificity","url":"https://www.academia.edu/Documents/in/Sensitivity_and_Specificity?f_ri=15372"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_3559363" data-work_id="3559363" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/3559363/Application_of_Artificial_Neural_Networks_for_Childhood_Obesity_Predicition">Application of Artificial Neural Networks for Childhood Obesity Predicition</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">In this study, artificial neural networks (ANNs) were applied to predict the mean monthly wind speed of any target station using the mean monthly wind speeds of neighboring stations which are indicated as reference stations. Hourly wind... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_3559363" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">In this study, artificial neural networks (ANNs) were applied to predict the mean monthly wind speed of any target station using the mean monthly wind speeds of neighboring stations which are indicated as reference stations. Hourly wind speed data, collected by the Turkish State Meteorological Service (TSMS) at 8 measuring stations located in the eastern Mediterranean region of Turkey were used. The long-term wind data, containing hourly wind speeds, directions and related information, cover the period between 1992 and 2001. These data were divided into two sections. According to the correlation coefficients, reference and target stations were defined. The mean monthly wind speeds of reference stations were used and also corresponding months were specified in the input layer of the network. On the other hand, the mean monthly wind speed of the target station was utilized in the output layer of the network. Resilient propagation (RP) learning algorithm was applied in the present simulation. The hidden layers and output layer of the network consist of logistic sigmoid transfer function (logsig) and linear transfer function (purelin) as an activation function. Finally, the values determined by ANN model were compared with the actual data. The maximum mean absolute percentage error was found to be 14.13% for Antakya meteorological station and the best result was found to be 4.49% for Mersin meteorological station. r</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/3559363" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="44120bd68339bf1e7f13622d4a92cf73" rel="nofollow" data-download="{"attachment_id":50230956,"asset_id":3559363,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/50230956/download_file?st=MTc0MDkzMDYzMCw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="4229567" href="https://uni-mb.academia.edu/MartinBigec">Martin Bigec</a><script data-card-contents-for-user="4229567" type="text/json">{"id":4229567,"first_name":"Martin","last_name":"Bigec","domain_name":"uni-mb","page_name":"MartinBigec","display_name":"Martin Bigec","profile_url":"https://uni-mb.academia.edu/MartinBigec?f_ri=15372","photo":"/images/s65_no_pic.png"}</script></span></span></li><li class="js-paper-rank-work_3559363 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="3559363"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 3559363, container: ".js-paper-rank-work_3559363", }); 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Hourly wind speed data, collected by the Turkish State Meteorological Service (TSMS) at 8 measuring stations located in the eastern Mediterranean region of Turkey were used. The long-term wind data, containing hourly wind speeds, directions and related information, cover the period between 1992 and 2001. These data were divided into two sections. According to the correlation coefficients, reference and target stations were defined. The mean monthly wind speeds of reference stations were used and also corresponding months were specified in the input layer of the network. On the other hand, the mean monthly wind speed of the target station was utilized in the output layer of the network. Resilient propagation (RP) learning algorithm was applied in the present simulation. The hidden layers and output layer of the network consist of logistic sigmoid transfer function (logsig) and linear transfer function (purelin) as an activation function. Finally, the values determined by ANN model were compared with the actual data. The maximum mean absolute percentage error was found to be 14.13% for Antakya meteorological station and the best result was found to be 4.49% for Mersin meteorological station. r","downloadable_attachments":[{"id":50230956,"asset_id":3559363,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":4229567,"first_name":"Martin","last_name":"Bigec","domain_name":"uni-mb","page_name":"MartinBigec","display_name":"Martin Bigec","profile_url":"https://uni-mb.academia.edu/MartinBigec?f_ri=15372","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":60,"name":"Mechanical Engineering","url":"https://www.academia.edu/Documents/in/Mechanical_Engineering?f_ri=15372","nofollow":true},{"id":72,"name":"Chemical Engineering","url":"https://www.academia.edu/Documents/in/Chemical_Engineering?f_ri=15372","nofollow":true},{"id":73,"name":"Civil Engineering","url":"https://www.academia.edu/Documents/in/Civil_Engineering?f_ri=15372","nofollow":true},{"id":237,"name":"Cognitive Science","url":"https://www.academia.edu/Documents/in/Cognitive_Science?f_ri=15372","nofollow":true},{"id":428,"name":"Algorithms","url":"https://www.academia.edu/Documents/in/Algorithms?f_ri=15372"},{"id":470,"name":"Expert Systems","url":"https://www.academia.edu/Documents/in/Expert_Systems?f_ri=15372"},{"id":2738,"name":"Renewable Energy","url":"https://www.academia.edu/Documents/in/Renewable_Energy?f_ri=15372"},{"id":5412,"name":"Energy","url":"https://www.academia.edu/Documents/in/Energy?f_ri=15372"},{"id":6200,"name":"Magnetic Resonance Imaging","url":"https://www.academia.edu/Documents/in/Magnetic_Resonance_Imaging?f_ri=15372"},{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372"},{"id":17515,"name":"Digital imaging","url":"https://www.academia.edu/Documents/in/Digital_imaging?f_ri=15372"},{"id":28235,"name":"Multidisciplinary","url":"https://www.academia.edu/Documents/in/Multidisciplinary?f_ri=15372"},{"id":32927,"name":"Molecular modeling","url":"https://www.academia.edu/Documents/in/Molecular_modeling?f_ri=15372"},{"id":67215,"name":"Separation Science","url":"https://www.academia.edu/Documents/in/Separation_Science?f_ri=15372"},{"id":69542,"name":"Computer Simulation","url":"https://www.academia.edu/Documents/in/Computer_Simulation?f_ri=15372"},{"id":80799,"name":"Classical Physics","url":"https://www.academia.edu/Documents/in/Classical_Physics?f_ri=15372"},{"id":100540,"name":"Feasibility Studies","url":"https://www.academia.edu/Documents/in/Feasibility_Studies?f_ri=15372"},{"id":126839,"name":"Obstetrics and Gynaecology","url":"https://www.academia.edu/Documents/in/Obstetrics_and_Gynaecology?f_ri=15372"},{"id":153770,"name":"Palpation","url":"https://www.academia.edu/Documents/in/Palpation?f_ri=15372"},{"id":244814,"name":"Clinical Sciences","url":"https://www.academia.edu/Documents/in/Clinical_Sciences?f_ri=15372"},{"id":289271,"name":"Aged","url":"https://www.academia.edu/Documents/in/Aged?f_ri=15372"},{"id":469018,"name":"Neoplasms","url":"https://www.academia.edu/Documents/in/Neoplasms?f_ri=15372"},{"id":645605,"name":"THEORETICAL AND COMPUTATIONAL CHEMISTRY","url":"https://www.academia.edu/Documents/in/THEORETICAL_AND_COMPUTATIONAL_CHEMISTRY?f_ri=15372"},{"id":778709,"name":"Reaction Rate","url":"https://www.academia.edu/Documents/in/Reaction_Rate?f_ri=15372"},{"id":901876,"name":"Sensitivity and Specificity","url":"https://www.academia.edu/Documents/in/Sensitivity_and_Specificity?f_ri=15372"},{"id":1044977,"name":"Petroleum Science and 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u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_63599165" data-work_id="63599165" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/63599165/Source_identification_of_PM2_5_particles_measured_in_Gwangju_Korea">Source identification of PM2.5 particles measured in Gwangju, Korea</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">The UNMIX and Chemical Mass Balance (CMB) receptor models were used to investigate sources of PM 2.5 aerosols measured between March 2001 and February 2002 in Gwangju, Korea. Measurements of PM 2.5 particles were used for the analysis of... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_63599165" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">The UNMIX and Chemical Mass Balance (CMB) receptor models were used to investigate sources of PM 2.5 aerosols measured between March 2001 and February 2002 in Gwangju, Korea. Measurements of PM 2.5 particles were used for the analysis of carbonaceous species (organic (OC) and elemental carbon (EC)) using the thermal manganese dioxide oxidation (TMO) method, the investigation of seven ionic species using ion chromatography (IC), and the analysis of twenty-four metal species using Inductively Coupled Plasma (ICP)-Atomic Emission Spectrometry (AES)/ICP-Mass Spectrometry (MS). According to annual average PM 2.5 source apportionment results obtained from CMB calculations, diesel vehicle exhaust was the major contributor, accounting for 33.4% of the measured PM 2.5 mass (21.5 μg m − 3), followed by secondary sulfate (14.6%), meat cooking (11.7%), secondary organic carbon (8.9%), secondary nitrate (7.6%), urban dust (5.5%), Asian dust (4.4%), biomass burning (2.8%), sea salt (2.7%), residual oil combustion (2.6%), gasoline vehicle exhaust (1.9%), automobile lead (0.5%), and components of unknown sources (3.4%). Seven PM 2.5 sources including diesel vehicles (29.6%), secondary sulfate (17.4%), biomass burning (14.7%), secondary nitrate (12.6%), gasoline vehicles (12.4%), secondary organic carbon (5.8%) and Asian dust (1.9%) were identified from the UNMIX analysis. The annual average source apportionment results from the two models are compared and the reasons for differences are qualitatively discussed for better understanding of PM 2.5 sources. Additionally, the impact of air mass pathways on the PM 2.5 mass was evaluated using air mass trajectories calculated with the Hybrid Single-Particle Lagrangian Integrated Trajectory (HYSPLIT) backward trajectory model. Source contributions to PM 2.5 collected during the four air mass patterns and two event periods were calculated with the CMB model and analyzed. Results of source apportionment revealed that the contribution of diesel traffic exhaust (47.0%) in stagnant conditions (S) was much higher than the average contribution of diesel vehicle exhaust (33.4%) during the sampling period. During Asian dust (AD) periods when the air mass passed over the Korean peninsula, Asian dust and secondary organic carbon accounted for 25.2 and 23.0% of the PM 2.5 mass, respectively, whereas Asian dust contributed only 10.8% to the PM 2.5 mass during the AD event when the air mass passed over the Yellow Sea. The contribution of biomass burning to the PM 2.5 mass during the biomass burning (BB) event equaled 63.8%.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/63599165" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="bdc8f039ff273d741545e75e33b9dabb" rel="nofollow" data-download="{"attachment_id":75975666,"asset_id":63599165,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/75975666/download_file?st=MTc0MDkzMDYzMCw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="98813295" href="https://independent.academia.edu/sandrahurtado21">sandra hurtado</a><script data-card-contents-for-user="98813295" type="text/json">{"id":98813295,"first_name":"sandra","last_name":"hurtado","domain_name":"independent","page_name":"sandrahurtado21","display_name":"sandra hurtado","profile_url":"https://independent.academia.edu/sandrahurtado21?f_ri=15372","photo":"/images/s65_no_pic.png"}</script></span></span></li><li class="js-paper-rank-work_63599165 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="63599165"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 63599165, container: ".js-paper-rank-work_63599165", }); 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Measurements of PM 2.5 particles were used for the analysis of carbonaceous species (organic (OC) and elemental carbon (EC)) using the thermal manganese dioxide oxidation (TMO) method, the investigation of seven ionic species using ion chromatography (IC), and the analysis of twenty-four metal species using Inductively Coupled Plasma (ICP)-Atomic Emission Spectrometry (AES)/ICP-Mass Spectrometry (MS). According to annual average PM 2.5 source apportionment results obtained from CMB calculations, diesel vehicle exhaust was the major contributor, accounting for 33.4% of the measured PM 2.5 mass (21.5 μg m − 3), followed by secondary sulfate (14.6%), meat cooking (11.7%), secondary organic carbon (8.9%), secondary nitrate (7.6%), urban dust (5.5%), Asian dust (4.4%), biomass burning (2.8%), sea salt (2.7%), residual oil combustion (2.6%), gasoline vehicle exhaust (1.9%), automobile lead (0.5%), and components of unknown sources (3.4%). Seven PM 2.5 sources including diesel vehicles (29.6%), secondary sulfate (17.4%), biomass burning (14.7%), secondary nitrate (12.6%), gasoline vehicles (12.4%), secondary organic carbon (5.8%) and Asian dust (1.9%) were identified from the UNMIX analysis. The annual average source apportionment results from the two models are compared and the reasons for differences are qualitatively discussed for better understanding of PM 2.5 sources. Additionally, the impact of air mass pathways on the PM 2.5 mass was evaluated using air mass trajectories calculated with the Hybrid Single-Particle Lagrangian Integrated Trajectory (HYSPLIT) backward trajectory model. Source contributions to PM 2.5 collected during the four air mass patterns and two event periods were calculated with the CMB model and analyzed. Results of source apportionment revealed that the contribution of diesel traffic exhaust (47.0%) in stagnant conditions (S) was much higher than the average contribution of diesel vehicle exhaust (33.4%) during the sampling period. During Asian dust (AD) periods when the air mass passed over the Korean peninsula, Asian dust and secondary organic carbon accounted for 25.2 and 23.0% of the PM 2.5 mass, respectively, whereas Asian dust contributed only 10.8% to the PM 2.5 mass during the AD event when the air mass passed over the Yellow Sea. The contribution of biomass burning to the PM 2.5 mass during the biomass burning (BB) event equaled 63.8%.","downloadable_attachments":[{"id":75975666,"asset_id":63599165,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":98813295,"first_name":"sandra","last_name":"hurtado","domain_name":"independent","page_name":"sandrahurtado21","display_name":"sandra hurtado","profile_url":"https://independent.academia.edu/sandrahurtado21?f_ri=15372","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":2442,"name":"Atmospheric Science","url":"https://www.academia.edu/Documents/in/Atmospheric_Science?f_ri=15372","nofollow":true},{"id":5769,"name":"Mass Spectrometry","url":"https://www.academia.edu/Documents/in/Mass_Spectrometry?f_ri=15372","nofollow":true},{"id":15372,"name":"Ion 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Forms","url":"https://www.academia.edu/Documents/in/Dosage_Forms?f_ri=15372"},{"id":1216548,"name":"Ion Exchange Resin","url":"https://www.academia.edu/Documents/in/Ion_Exchange_Resin?f_ri=15372"},{"id":1451595,"name":"Edetic Acid","url":"https://www.academia.edu/Documents/in/Edetic_Acid?f_ri=15372"},{"id":3536203,"name":"fused silica","url":"https://www.academia.edu/Documents/in/fused_silica?f_ri=15372"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_855718" data-work_id="855718" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/855718/Arsenic_speciation_in_Mono_Lake_California_Response_to_seasonal_stratification_and_anoxia">Arsenic speciation in Mono Lake, California: Response to seasonal stratification and anoxia</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">Mono Lake is a closed-basin, alkaline, hypersaline lake located at the western edge of the Great Basin in eastern California. We studied the distribution of arsenic (As) species in the water column of Mono Lake between February and... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_855718" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">Mono Lake is a closed-basin, alkaline, hypersaline lake located at the western edge of the Great Basin in eastern California. We studied the distribution of arsenic (As) species in the water column of Mono Lake between February and November, 2002. This period captured the seasonal progression from winter mixing, through summer thermal stratification, to autumn overturn. Arsenic speciation was determined by ion chromatography-inductively coupled-plasma-mass spectrometry of samples preserved in the field by flashfreezing in liquid nitrogen. We found that arsenic speciation was dominated (Ͼ90%) by arsenate when oxygen was detectable. Once levels fell below 6 mol/L O 2 , arsenic speciation shifted to dominance by reduced species. Arsenate and arsenite co-occurred in a transition zone immediately below the base of the oxycline and low but significant concentrations of arsenate were occasionally detected in sulfidic hypolimnion samples. Thio-arsenic species were the dominant form of As found in sulfidic waters. Maxima of thio-arsenic species with stoichiometries consistent with mono-, di-and trithio-arsenic occurred in succession as sulfide concentration increased. A compound with a stoichiometry consistent with trithio-arsenic was the dominant As species (ϳ50% of total As) in high sulfide (2 mmol/L) bottom water. Lower concentrations of total As in bottom water relative to surface water suggest precipitation of As/S mineral phases in response to sulfide accumulation during prolonged anoxia.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/855718" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="0d3ac24a866d8f05e346ba15b462f015" rel="nofollow" data-download="{"attachment_id":51208966,"asset_id":855718,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/51208966/download_file?st=MTc0MDkzMDYzMCw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="686325" href="https://independent.academia.edu/HakanGurleyuk">Hakan Gurleyuk</a><script data-card-contents-for-user="686325" type="text/json">{"id":686325,"first_name":"Hakan","last_name":"Gurleyuk","domain_name":"independent","page_name":"HakanGurleyuk","display_name":"Hakan Gurleyuk","profile_url":"https://independent.academia.edu/HakanGurleyuk?f_ri=15372","photo":"/images/s65_no_pic.png"}</script></span></span></li><li class="js-paper-rank-work_855718 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="855718"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 855718, container: ".js-paper-rank-work_855718", }); 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We studied the distribution of arsenic (As) species in the water column of Mono Lake between February and November, 2002. This period captured the seasonal progression from winter mixing, through summer thermal stratification, to autumn overturn. Arsenic speciation was determined by ion chromatography-inductively coupled-plasma-mass spectrometry of samples preserved in the field by flashfreezing in liquid nitrogen. We found that arsenic speciation was dominated (Ͼ90%) by arsenate when oxygen was detectable. Once levels fell below 6 mol/L O 2 , arsenic speciation shifted to dominance by reduced species. Arsenate and arsenite co-occurred in a transition zone immediately below the base of the oxycline and low but significant concentrations of arsenate were occasionally detected in sulfidic hypolimnion samples. Thio-arsenic species were the dominant form of As found in sulfidic waters. Maxima of thio-arsenic species with stoichiometries consistent with mono-, di-and trithio-arsenic occurred in succession as sulfide concentration increased. A compound with a stoichiometry consistent with trithio-arsenic was the dominant As species (ϳ50% of total As) in high sulfide (2 mmol/L) bottom water. Lower concentrations of total As in bottom water relative to surface water suggest precipitation of As/S mineral phases in response to sulfide accumulation during prolonged anoxia.","downloadable_attachments":[{"id":51208966,"asset_id":855718,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":686325,"first_name":"Hakan","last_name":"Gurleyuk","domain_name":"independent","page_name":"HakanGurleyuk","display_name":"Hakan Gurleyuk","profile_url":"https://independent.academia.edu/HakanGurleyuk?f_ri=15372","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":406,"name":"Geology","url":"https://www.academia.edu/Documents/in/Geology?f_ri=15372","nofollow":true},{"id":407,"name":"Geochemistry","url":"https://www.academia.edu/Documents/in/Geochemistry?f_ri=15372","nofollow":true},{"id":6227,"name":"Arsenic","url":"https://www.academia.edu/Documents/in/Arsenic?f_ri=15372","nofollow":true},{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true},{"id":25436,"name":"Stratification","url":"https://www.academia.edu/Documents/in/Stratification?f_ri=15372"},{"id":57433,"name":"Seasonality","url":"https://www.academia.edu/Documents/in/Seasonality?f_ri=15372"},{"id":142810,"name":"Surface Water","url":"https://www.academia.edu/Documents/in/Surface_Water?f_ri=15372"},{"id":202159,"name":"Mantle Transition Zone","url":"https://www.academia.edu/Documents/in/Mantle_Transition_Zone?f_ri=15372"},{"id":222413,"name":"Inductively Coupled Plasma Mass Spectrometry","url":"https://www.academia.edu/Documents/in/Inductively_Coupled_Plasma_Mass_Spectrometry?f_ri=15372"},{"id":444138,"name":"Great Basin","url":"https://www.academia.edu/Documents/in/Great_Basin?f_ri=15372"},{"id":476742,"name":"Thermal Stratification","url":"https://www.academia.edu/Documents/in/Thermal_Stratification?f_ri=15372"},{"id":945101,"name":"Liquid Nitrogen","url":"https://www.academia.edu/Documents/in/Liquid_Nitrogen?f_ri=15372"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_30544717" data-work_id="30544717" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/30544717/Determination_of_major_element_chemistry_in_terrestrial_waters_from_Antarctica_by_ion_chromatography">Determination of major element chemistry in terrestrial waters from Antarctica by ion chromatography</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">As part of the new Long Term Ecological Research (LTER) project in the McMurdo Dry Valleys of Antarctica, a systematic aqueous geochemical sampling program has been undertaken. A series of terrestrial water samples have been collected and... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_30544717" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">As part of the new Long Term Ecological Research (LTER) project in the McMurdo Dry Valleys of Antarctica, a systematic aqueous geochemical sampling program has been undertaken. A series of terrestrial water samples have been collected and analyzed for major ion chemistry by ion chromatography. The concentrations of ions cover a wide range of total dissolved solids (TDS) from relatively pristine glacier ice to hypersaline lake waters. Some of the challenges which are encountered while trying to collect and analyze samples covering a wide range of concentrations in such a hostile environment are discussed.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/30544717" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="13cf0f333eefeedf875b6781d60271da" rel="nofollow" data-download="{"attachment_id":50988821,"asset_id":30544717,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/50988821/download_file?st=MTc0MDkzMDYzMCw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="58221479" href="https://independent.academia.edu/EdwardGraham4">Edward Graham</a><script data-card-contents-for-user="58221479" type="text/json">{"id":58221479,"first_name":"Edward","last_name":"Graham","domain_name":"independent","page_name":"EdwardGraham4","display_name":"Edward Graham","profile_url":"https://independent.academia.edu/EdwardGraham4?f_ri=15372","photo":"/images/s65_no_pic.png"}</script></span></span></li><li class="js-paper-rank-work_30544717 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="30544717"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 30544717, container: ".js-paper-rank-work_30544717", }); 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Some of the challenges which are encountered while trying to collect and analyze samples covering a wide range of concentrations in such a hostile environment are discussed.","downloadable_attachments":[{"id":50988821,"asset_id":30544717,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":58221479,"first_name":"Edward","last_name":"Graham","domain_name":"independent","page_name":"EdwardGraham4","display_name":"Edward Graham","profile_url":"https://independent.academia.edu/EdwardGraham4?f_ri=15372","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":48,"name":"Engineering","url":"https://www.academia.edu/Documents/in/Engineering?f_ri=15372","nofollow":true},{"id":923,"name":"Technology","url":"https://www.academia.edu/Documents/in/Technology?f_ri=15372","nofollow":true},{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true},{"id":260118,"name":"CHEMICAL SCIENCES","url":"https://www.academia.edu/Documents/in/CHEMICAL_SCIENCES?f_ri=15372","nofollow":true},{"id":338011,"name":"Water Analysis","url":"https://www.academia.edu/Documents/in/Water_Analysis?f_ri=15372"},{"id":675159,"name":"Long Term Ecological Research","url":"https://www.academia.edu/Documents/in/Long_Term_Ecological_Research?f_ri=15372"},{"id":2124476,"name":"McMurdo Dry Valleys","url":"https://www.academia.edu/Documents/in/McMurdo_Dry_Valleys?f_ri=15372"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_29877651" data-work_id="29877651" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/29877651/Improved_sample_preparation_for_the_quantitative_analysis_of_paroxetine_in_human_plasma_by_stable_isotope_dilution_negative_ion_chemical_ionisation_gas_chromatography_mass_spectrometry">Improved sample preparation for the quantitative analysis of paroxetine in human plasma by stable isotope dilution negative ion chemical ionisation gas chromatography-mass spectrometry</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest">The simultaneous analysis of various prostaglandins in. biological samples is difficult because the prostaglandins have to be extracted from a coinplex matrix, and because of the presence of many other prostaglandins and their metabolites.</div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" 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class="js-percentile-work_29877651 InlineList-item InlineList-item--bordered hidden u-tcGrayDark"><span class="percentile-widget hidden"><span class="u-mr2x percentile-widget" style="display: none">•</span><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 29877651; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-percentile-work_29877651"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></li><li class="js-view-count-work_29877651 InlineList-item InlineList-item--bordered hidden"><div><span><span class="js-view-count view-count u-mr2x" data-work-id="29877651"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 29877651; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=29877651]").text(description); $(".js-view-count-work_29877651").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_29877651").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="29877651"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">23</a>  </div><span class="InlineList-item-text u-textTruncate u-pl10x"><a class="InlineList-item-text" data-has-card-for-ri="524" rel="nofollow" href="https://www.academia.edu/Documents/in/Analytical_Chemistry">Analytical Chemistry</a>, <script data-card-contents-for-ri="524" type="text/json">{"id":524,"name":"Analytical Chemistry","url":"https://www.academia.edu/Documents/in/Analytical_Chemistry?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="4656" rel="nofollow" href="https://www.academia.edu/Documents/in/Chromatography">Chromatography</a>, <script data-card-contents-for-ri="4656" type="text/json">{"id":4656,"name":"Chromatography","url":"https://www.academia.edu/Documents/in/Chromatography?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="5769" rel="nofollow" href="https://www.academia.edu/Documents/in/Mass_Spectrometry">Mass Spectrometry</a>, <script data-card-contents-for-ri="5769" type="text/json">{"id":5769,"name":"Mass Spectrometry","url":"https://www.academia.edu/Documents/in/Mass_Spectrometry?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="15372" rel="nofollow" href="https://www.academia.edu/Documents/in/Ion_Chromatography">Ion Chromatography</a><script data-card-contents-for-ri="15372" type="text/json">{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=29877651]'), work: {"id":29877651,"title":"Improved sample preparation for the quantitative analysis of paroxetine in human plasma by stable isotope dilution negative ion chemical ionisation gas chromatography-mass spectrometry","created_at":"2016-11-16T00:35:28.733-08:00","url":"https://www.academia.edu/29877651/Improved_sample_preparation_for_the_quantitative_analysis_of_paroxetine_in_human_plasma_by_stable_isotope_dilution_negative_ion_chemical_ionisation_gas_chromatography_mass_spectrometry?f_ri=15372","dom_id":"work_29877651","summary":"The simultaneous analysis of various prostaglandins in. biological samples is difficult because the prostaglandins have to be extracted from a coinplex matrix, and because of the presence of many other prostaglandins and their metabolites.","downloadable_attachments":[{"id":50344672,"asset_id":29877651,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":56727548,"first_name":"Hans","last_name":"Leis","domain_name":"independent","page_name":"HansLeis","display_name":"Hans Leis","profile_url":"https://independent.academia.edu/HansLeis?f_ri=15372","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":524,"name":"Analytical Chemistry","url":"https://www.academia.edu/Documents/in/Analytical_Chemistry?f_ri=15372","nofollow":true},{"id":4656,"name":"Chromatography","url":"https://www.academia.edu/Documents/in/Chromatography?f_ri=15372","nofollow":true},{"id":5769,"name":"Mass Spectrometry","url":"https://www.academia.edu/Documents/in/Mass_Spectrometry?f_ri=15372","nofollow":true},{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true},{"id":32910,"name":"Sample Preparation","url":"https://www.academia.edu/Documents/in/Sample_Preparation?f_ri=15372"},{"id":37434,"name":"Quantitative analysis","url":"https://www.academia.edu/Documents/in/Quantitative_analysis?f_ri=15372"},{"id":83087,"name":"Isotopes","url":"https://www.academia.edu/Documents/in/Isotopes?f_ri=15372"},{"id":91257,"name":"Stable Isotope","url":"https://www.academia.edu/Documents/in/Stable_Isotope?f_ri=15372"},{"id":96893,"name":"Calibration","url":"https://www.academia.edu/Documents/in/Calibration?f_ri=15372"},{"id":166448,"name":"Gas Chromatography","url":"https://www.academia.edu/Documents/in/Gas_Chromatography?f_ri=15372"},{"id":246560,"name":"High Pressure Liquid Chromatography","url":"https://www.academia.edu/Documents/in/High_Pressure_Liquid_Chromatography?f_ri=15372"},{"id":430901,"name":"Isotope Dilution","url":"https://www.academia.edu/Documents/in/Isotope_Dilution?f_ri=15372"},{"id":459378,"name":"Very high throughput","url":"https://www.academia.edu/Documents/in/Very_high_throughput?f_ri=15372"},{"id":529560,"name":"Gas Chromatography/mass Spectrometry","url":"https://www.academia.edu/Documents/in/Gas_Chromatography_mass_Spectrometry?f_ri=15372"},{"id":549280,"name":"Reproducibility of Results","url":"https://www.academia.edu/Documents/in/Reproducibility_of_Results?f_ri=15372"},{"id":641216,"name":"Quantitative Analysis","url":"https://www.academia.edu/Documents/in/Quantitative_Analysis-1?f_ri=15372"},{"id":708670,"name":"Prostaglandins","url":"https://www.academia.edu/Documents/in/Prostaglandins?f_ri=15372"},{"id":901876,"name":"Sensitivity and Specificity","url":"https://www.academia.edu/Documents/in/Sensitivity_and_Specificity?f_ri=15372"},{"id":1137254,"name":"Hydrogen-Ion Concentration","url":"https://www.academia.edu/Documents/in/Hydrogen-Ion_Concentration?f_ri=15372"},{"id":1626168,"name":"Prostaglandin E2","url":"https://www.academia.edu/Documents/in/Prostaglandin_E2?f_ri=15372"},{"id":1661112,"name":"Serotonin Uptake Inhibitors","url":"https://www.academia.edu/Documents/in/Serotonin_Uptake_Inhibitors?f_ri=15372"},{"id":1681026,"name":"Biochemistry and cell biology","url":"https://www.academia.edu/Documents/in/Biochemistry_and_cell_biology?f_ri=15372"},{"id":2535440,"name":"Paroxetine","url":"https://www.academia.edu/Documents/in/Paroxetine?f_ri=15372"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_7139956" data-work_id="7139956" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/7139956/Determination_of_inorganic_ions_and_trace_elements_in_total_suspended_particles_at_three_urban_zones_in_the_Mexico_City_Metropolitan_Area_and_one_rural_site">Determination of inorganic ions and trace elements in total suspended particles at three urban zones in the Mexico City Metropolitan Area and one rural site</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">Inorganic ions and trace metals in total suspended particles were measured during the period 2006-2007 at four sites; three urban sites in the Mexico City Metropolitan Area (MCMA) and one nearby rural site in the state of Morelos. SO 4 2−... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_7139956" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">Inorganic ions and trace metals in total suspended particles were measured during the period 2006-2007 at four sites; three urban sites in the Mexico City Metropolitan Area (MCMA) and one nearby rural site in the state of Morelos. SO 4 2− , NO 3 − , Cl − and NH 4 + ions were analyzed by ion chromatography; Na + , K + , Ca 2+ and Mg 2+ by flame atomic absorption spectroscopy, and Al, Cd, Cr, Mn, Pb and V by an atomic absorption spectrometer with a graphite furnace attachment. The results indicated that SO 4 2− was the most abundant ion. All trace elements except Mn and V showed statistically significant differences between sampling sites. Pearson's correlation applied to all data showed a high correlation among SO 4 2− , NO 3 − and NH 4 + , indicating a common anthropogenic origin. In addition, the correlation observed between Ca 2+ and Al indicated a crustal origin, as supported by the enrichment factors. Over the total sampling period, significant differences in particles and trace metals were found between sites and meteorological seasons.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/7139956" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="38124f61adcca19fdb3f8dccfbe2bc4c" rel="nofollow" data-download="{"attachment_id":48585094,"asset_id":7139956,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/48585094/download_file?st=MTc0MDkzMDYzMSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="12314779" href="https://esia.academia.edu/HugoPadilla">Hugo Padilla</a><script data-card-contents-for-user="12314779" type="text/json">{"id":12314779,"first_name":"Hugo","last_name":"Padilla","domain_name":"esia","page_name":"HugoPadilla","display_name":"Hugo Padilla","profile_url":"https://esia.academia.edu/HugoPadilla?f_ri=15372","photo":"https://0.academia-photos.com/12314779/3530708/4145174/s65_hugo.padilla.jpg"}</script></span></span></li><li class="js-paper-rank-work_7139956 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="7139956"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 7139956, container: ".js-paper-rank-work_7139956", }); 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$(".js-view-count[data-work-id=7139956]").text(description); $(".js-view-count-work_7139956").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_7139956").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="7139956"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">13</a>  </div><span class="InlineList-item-text u-textTruncate u-pl10x"><a class="InlineList-item-text" data-has-card-for-ri="2442" rel="nofollow" href="https://www.academia.edu/Documents/in/Atmospheric_Science">Atmospheric Science</a>, <script data-card-contents-for-ri="2442" type="text/json">{"id":2442,"name":"Atmospheric Science","url":"https://www.academia.edu/Documents/in/Atmospheric_Science?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="5069" rel="nofollow" href="https://www.academia.edu/Documents/in/Principal_Component_Analysis">Principal Component Analysis</a>, <script data-card-contents-for-ri="5069" type="text/json">{"id":5069,"name":"Principal Component Analysis","url":"https://www.academia.edu/Documents/in/Principal_Component_Analysis?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="9095" rel="nofollow" href="https://www.academia.edu/Documents/in/Trace_Metals">Trace Metals</a>, <script data-card-contents-for-ri="9095" type="text/json">{"id":9095,"name":"Trace Metals","url":"https://www.academia.edu/Documents/in/Trace_Metals?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="15372" rel="nofollow" href="https://www.academia.edu/Documents/in/Ion_Chromatography">Ion Chromatography</a><script data-card-contents-for-ri="15372" type="text/json">{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=7139956]'), work: {"id":7139956,"title":"Determination of inorganic ions and trace elements in total suspended particles at three urban zones in the Mexico City Metropolitan Area and one rural site","created_at":"2014-05-23T16:08:20.326-07:00","url":"https://www.academia.edu/7139956/Determination_of_inorganic_ions_and_trace_elements_in_total_suspended_particles_at_three_urban_zones_in_the_Mexico_City_Metropolitan_Area_and_one_rural_site?f_ri=15372","dom_id":"work_7139956","summary":"Inorganic ions and trace metals in total suspended particles were measured during the period 2006-2007 at four sites; three urban sites in the Mexico City Metropolitan Area (MCMA) and one nearby rural site in the state of Morelos. SO 4 2− , NO 3 − , Cl − and NH 4 + ions were analyzed by ion chromatography; Na + , K + , Ca 2+ and Mg 2+ by flame atomic absorption spectroscopy, and Al, Cd, Cr, Mn, Pb and V by an atomic absorption spectrometer with a graphite furnace attachment. The results indicated that SO 4 2− was the most abundant ion. All trace elements except Mn and V showed statistically significant differences between sampling sites. Pearson's correlation applied to all data showed a high correlation among SO 4 2− , NO 3 − and NH 4 + , indicating a common anthropogenic origin. In addition, the correlation observed between Ca 2+ and Al indicated a crustal origin, as supported by the enrichment factors. Over the total sampling period, significant differences in particles and trace metals were found between sites and meteorological seasons.","downloadable_attachments":[{"id":48585094,"asset_id":7139956,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":12314779,"first_name":"Hugo","last_name":"Padilla","domain_name":"esia","page_name":"HugoPadilla","display_name":"Hugo Padilla","profile_url":"https://esia.academia.edu/HugoPadilla?f_ri=15372","photo":"https://0.academia-photos.com/12314779/3530708/4145174/s65_hugo.padilla.jpg"}],"research_interests":[{"id":2442,"name":"Atmospheric Science","url":"https://www.academia.edu/Documents/in/Atmospheric_Science?f_ri=15372","nofollow":true},{"id":5069,"name":"Principal Component Analysis","url":"https://www.academia.edu/Documents/in/Principal_Component_Analysis?f_ri=15372","nofollow":true},{"id":9095,"name":"Trace Metals","url":"https://www.academia.edu/Documents/in/Trace_Metals?f_ri=15372","nofollow":true},{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true},{"id":57433,"name":"Seasonality","url":"https://www.academia.edu/Documents/in/Seasonality?f_ri=15372"},{"id":57531,"name":"Sampling","url":"https://www.academia.edu/Documents/in/Sampling?f_ri=15372"},{"id":60285,"name":"Atmospheric sciences","url":"https://www.academia.edu/Documents/in/Atmospheric_sciences?f_ri=15372"},{"id":120698,"name":"Particles","url":"https://www.academia.edu/Documents/in/Particles?f_ri=15372"},{"id":125564,"name":"Statistical Significance","url":"https://www.academia.edu/Documents/in/Statistical_Significance?f_ri=15372"},{"id":174778,"name":"Principal Components Analysis","url":"https://www.academia.edu/Documents/in/Principal_Components_Analysis?f_ri=15372"},{"id":224577,"name":"Trace Elements","url":"https://www.academia.edu/Documents/in/Trace_Elements?f_ri=15372"},{"id":591142,"name":"Atomic Absorption","url":"https://www.academia.edu/Documents/in/Atomic_Absorption?f_ri=15372"},{"id":709300,"name":"Trace element","url":"https://www.academia.edu/Documents/in/Trace_element?f_ri=15372"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_12508171" data-work_id="12508171" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/12508171/Functionalized_SBA_15_mesoporous_silica_in_ion_chromatography_of_alkali_alkaline_earths_ammonium_and_transition_metal_ions">Functionalized SBA-15 mesoporous silica in ion chromatography of alkali, alkaline earths, ammonium and transition metal ions</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">The retention properties of a SBA-15 mesoporous silica functionalized with -(CH 2 ) 3 COOH groups, synthesized by a co-condensation route, were investigated for the ion chromatography of different cationic species. A systematic study on... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_12508171" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">The retention properties of a SBA-15 mesoporous silica functionalized with -(CH 2 ) 3 COOH groups, synthesized by a co-condensation route, were investigated for the ion chromatography of different cationic species. A systematic study on the effect of different eluent compositions containing non-complexing (methanesulfonic acid) or complexing (oxalic or pyridine-2,6-dicarboxylic acids) eluents, in the presence of organic modifiers (CH 3 CN, CH 3 OH, CH 3 NH 2 ) on the retention of cations (Li + , Na + , K + , Ca 2+ , Mg 2+ , Sr 2+ , Ba 2+ , NH 4 + , Cu 2+ , Ni 2+ , Zn 2+ , Cd 2+ , Co 2+ , Pb 2+ , Fe 3+ ) chosen as model analytes and for their environmental importance, allowed us to elucidate the mechanisms (cation-exchange or complexation) involved in the retention on the SBA-15 phase. For the first time separations of cations on SBA-15 based stationary phases are investigated, providing the basis for further development of mesoporous silica chemistry for in-flow ion-exchange applications.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/12508171" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="bf9790f0173acfdce12e255b887c11ba" rel="nofollow" data-download="{"attachment_id":46130264,"asset_id":12508171,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/46130264/download_file?st=MTc0MDkzMDYzMSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="31377961" href="https://independent.academia.edu/BarbaraOnida">Barbara Onida</a><script data-card-contents-for-user="31377961" type="text/json">{"id":31377961,"first_name":"Barbara","last_name":"Onida","domain_name":"independent","page_name":"BarbaraOnida","display_name":"Barbara Onida","profile_url":"https://independent.academia.edu/BarbaraOnida?f_ri=15372","photo":"/images/s65_no_pic.png"}</script></span></span></li><li class="js-paper-rank-work_12508171 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="12508171"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 12508171, container: ".js-paper-rank-work_12508171", }); 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$(".js-view-count[data-work-id=12508171]").text(description); $(".js-view-count-work_12508171").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_12508171").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="12508171"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">13</a>  </div><span class="InlineList-item-text u-textTruncate u-pl10x"><a class="InlineList-item-text" data-has-card-for-ri="48" rel="nofollow" href="https://www.academia.edu/Documents/in/Engineering">Engineering</a>, <script data-card-contents-for-ri="48" type="text/json">{"id":48,"name":"Engineering","url":"https://www.academia.edu/Documents/in/Engineering?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="923" rel="nofollow" href="https://www.academia.edu/Documents/in/Technology">Technology</a>, <script data-card-contents-for-ri="923" type="text/json">{"id":923,"name":"Technology","url":"https://www.academia.edu/Documents/in/Technology?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="4656" rel="nofollow" href="https://www.academia.edu/Documents/in/Chromatography">Chromatography</a>, <script data-card-contents-for-ri="4656" type="text/json">{"id":4656,"name":"Chromatography","url":"https://www.academia.edu/Documents/in/Chromatography?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="15372" rel="nofollow" href="https://www.academia.edu/Documents/in/Ion_Chromatography">Ion Chromatography</a><script data-card-contents-for-ri="15372" type="text/json">{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=12508171]'), work: {"id":12508171,"title":"Functionalized SBA-15 mesoporous silica in ion chromatography of alkali, alkaline earths, ammonium and transition metal ions","created_at":"2015-05-21T06:21:02.621-07:00","url":"https://www.academia.edu/12508171/Functionalized_SBA_15_mesoporous_silica_in_ion_chromatography_of_alkali_alkaline_earths_ammonium_and_transition_metal_ions?f_ri=15372","dom_id":"work_12508171","summary":"The retention properties of a SBA-15 mesoporous silica functionalized with -(CH 2 ) 3 COOH groups, synthesized by a co-condensation route, were investigated for the ion chromatography of different cationic species. A systematic study on the effect of different eluent compositions containing non-complexing (methanesulfonic acid) or complexing (oxalic or pyridine-2,6-dicarboxylic acids) eluents, in the presence of organic modifiers (CH 3 CN, CH 3 OH, CH 3 NH 2 ) on the retention of cations (Li + , Na + , K + , Ca 2+ , Mg 2+ , Sr 2+ , Ba 2+ , NH 4 + , Cu 2+ , Ni 2+ , Zn 2+ , Cd 2+ , Co 2+ , Pb 2+ , Fe 3+ ) chosen as model analytes and for their environmental importance, allowed us to elucidate the mechanisms (cation-exchange or complexation) involved in the retention on the SBA-15 phase. For the first time separations of cations on SBA-15 based stationary phases are investigated, providing the basis for further development of mesoporous silica chemistry for in-flow ion-exchange applications.","downloadable_attachments":[{"id":46130264,"asset_id":12508171,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":31377961,"first_name":"Barbara","last_name":"Onida","domain_name":"independent","page_name":"BarbaraOnida","display_name":"Barbara Onida","profile_url":"https://independent.academia.edu/BarbaraOnida?f_ri=15372","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":48,"name":"Engineering","url":"https://www.academia.edu/Documents/in/Engineering?f_ri=15372","nofollow":true},{"id":923,"name":"Technology","url":"https://www.academia.edu/Documents/in/Technology?f_ri=15372","nofollow":true},{"id":4656,"name":"Chromatography","url":"https://www.academia.edu/Documents/in/Chromatography?f_ri=15372","nofollow":true},{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true},{"id":55764,"name":"Transition-Metal Oxides","url":"https://www.academia.edu/Documents/in/Transition-Metal_Oxides?f_ri=15372"},{"id":84278,"name":"Ph","url":"https://www.academia.edu/Documents/in/Ph?f_ri=15372"},{"id":90708,"name":"Functionalization","url":"https://www.academia.edu/Documents/in/Functionalization?f_ri=15372"},{"id":98440,"name":"Silica","url":"https://www.academia.edu/Documents/in/Silica?f_ri=15372"},{"id":112318,"name":"Molecular Sieve","url":"https://www.academia.edu/Documents/in/Molecular_Sieve?f_ri=15372"},{"id":260118,"name":"CHEMICAL SCIENCES","url":"https://www.academia.edu/Documents/in/CHEMICAL_SCIENCES?f_ri=15372"},{"id":743556,"name":"Ion Exchange","url":"https://www.academia.edu/Documents/in/Ion_Exchange?f_ri=15372"},{"id":1119031,"name":"Cation Exchange","url":"https://www.academia.edu/Documents/in/Cation_Exchange?f_ri=15372"},{"id":2390977,"name":"Transition metal oxides","url":"https://www.academia.edu/Documents/in/Transition_metal_oxides?f_ri=15372"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_19764994" data-work_id="19764994" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/19764994/Use_of_ion_chromatography_for_the_determination_of_fission_products_and_actinides_in_nuclear_applications">Use of ion chromatography for the determination of fission products and actinides in nuclear applications</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">The application of ion chromatography (IC) for the determination of trace radioisotopes and ion impurities, as well as for the separation of fission products and actinides in applications of nuclear concern is reviewed. Particular... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_19764994" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">The application of ion chromatography (IC) for the determination of trace radioisotopes and ion impurities, as well as for the separation of fission products and actinides in applications of nuclear concern is reviewed. Particular attention is given to the on-line coupling of IC with nuclear and non-nuclear detection modes. Recent results obtained employing a coupled IC-inductively coupled plasma mass spectrometry (ICP-MS) for the characterization of the complete inventory of fission products and actinides in spent nuclear fuel and high-level liquid waste samples are discussed in terms of isobaric interference elimination and isotope determination. © 1997 Elsevier Science B. V.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/19764994" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="9e5830270da8c8224a834b0c259930d7" rel="nofollow" data-download="{"attachment_id":40831674,"asset_id":19764994,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/40831674/download_file?st=MTc0MDkzMDYzMSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="40458372" href="https://independent.academia.edu/MariaBetti1">Maria Betti</a><script data-card-contents-for-user="40458372" type="text/json">{"id":40458372,"first_name":"Maria","last_name":"Betti","domain_name":"independent","page_name":"MariaBetti1","display_name":"Maria Betti","profile_url":"https://independent.academia.edu/MariaBetti1?f_ri=15372","photo":"/images/s65_no_pic.png"}</script></span></span></li><li class="js-paper-rank-work_19764994 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="19764994"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 19764994, container: ".js-paper-rank-work_19764994", }); 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$(".js-view-count[data-work-id=19764994]").text(description); $(".js-view-count-work_19764994").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_19764994").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="19764994"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">6</a>  </div><span class="InlineList-item-text u-textTruncate u-pl9x"><a class="InlineList-item-text" data-has-card-for-ri="48" rel="nofollow" href="https://www.academia.edu/Documents/in/Engineering">Engineering</a>, <script data-card-contents-for-ri="48" type="text/json">{"id":48,"name":"Engineering","url":"https://www.academia.edu/Documents/in/Engineering?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="923" rel="nofollow" href="https://www.academia.edu/Documents/in/Technology">Technology</a>, <script data-card-contents-for-ri="923" type="text/json">{"id":923,"name":"Technology","url":"https://www.academia.edu/Documents/in/Technology?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="15372" rel="nofollow" href="https://www.academia.edu/Documents/in/Ion_Chromatography">Ion Chromatography</a>, <script data-card-contents-for-ri="15372" type="text/json">{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="222413" rel="nofollow" href="https://www.academia.edu/Documents/in/Inductively_Coupled_Plasma_Mass_Spectrometry">Inductively Coupled Plasma Mass Spectrometry</a><script data-card-contents-for-ri="222413" type="text/json">{"id":222413,"name":"Inductively Coupled Plasma Mass Spectrometry","url":"https://www.academia.edu/Documents/in/Inductively_Coupled_Plasma_Mass_Spectrometry?f_ri=15372","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=19764994]'), work: {"id":19764994,"title":"Use of ion chromatography for the determination of fission products and actinides in nuclear applications","created_at":"2015-12-21T02:31:09.352-08:00","url":"https://www.academia.edu/19764994/Use_of_ion_chromatography_for_the_determination_of_fission_products_and_actinides_in_nuclear_applications?f_ri=15372","dom_id":"work_19764994","summary":"The application of ion chromatography (IC) for the determination of trace radioisotopes and ion impurities, as well as for the separation of fission products and actinides in applications of nuclear concern is reviewed. Particular attention is given to the on-line coupling of IC with nuclear and non-nuclear detection modes. Recent results obtained employing a coupled IC-inductively coupled plasma mass spectrometry (ICP-MS) for the characterization of the complete inventory of fission products and actinides in spent nuclear fuel and high-level liquid waste samples are discussed in terms of isobaric interference elimination and isotope determination. © 1997 Elsevier Science B. V.","downloadable_attachments":[{"id":40831674,"asset_id":19764994,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":40458372,"first_name":"Maria","last_name":"Betti","domain_name":"independent","page_name":"MariaBetti1","display_name":"Maria Betti","profile_url":"https://independent.academia.edu/MariaBetti1?f_ri=15372","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":48,"name":"Engineering","url":"https://www.academia.edu/Documents/in/Engineering?f_ri=15372","nofollow":true},{"id":923,"name":"Technology","url":"https://www.academia.edu/Documents/in/Technology?f_ri=15372","nofollow":true},{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true},{"id":222413,"name":"Inductively Coupled Plasma Mass Spectrometry","url":"https://www.academia.edu/Documents/in/Inductively_Coupled_Plasma_Mass_Spectrometry?f_ri=15372","nofollow":true},{"id":260118,"name":"CHEMICAL SCIENCES","url":"https://www.academia.edu/Documents/in/CHEMICAL_SCIENCES?f_ri=15372"},{"id":1363256,"name":"Spent Nuclear Fuel","url":"https://www.academia.edu/Documents/in/Spent_Nuclear_Fuel?f_ri=15372"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_29962013" data-work_id="29962013" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/29962013/Simultaneous_determination_of_fluoride_and_monofluorophosphate_in_toothpastes_by_supressed_ion_chromatography">Simultaneous determination of fluoride and monofluorophosphate in toothpastes by supressed ion chromatography</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">Suppressed ion chromatography with a highly selective and high capacity anion-exchange column is used for the determination of anionic compounds in ten commercially available toothpastes. Minimal sample preparation is needed, requiring... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_29962013" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">Suppressed ion chromatography with a highly selective and high capacity anion-exchange column is used for the determination of anionic compounds in ten commercially available toothpastes. Minimal sample preparation is needed, requiring only dilution and filtration over a solid-phase extraction cartridge. Quantitative analysis of fluoride and monofluorophosphate, as well as chloride, nitrate, orthophosphate, and sulfate is achieved in one chromatographic run with a total analysis time of 25 minutes. Optimized analytical conditions are validated in terms of accuracy, precision, and total uncertainty, and the results demonstrate the reproducibility of ion chromatography. The coefficient of determination for the anions ranges from 0.9896 to 0.9997. The spiked recoveries for the anions are 88-108%. The change in the fluoride content of the toothpaste with storage time is investigated.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/29962013" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="3fa5ca82e0e4c43919ff449ea9bac7e3" rel="nofollow" data-download="{"attachment_id":50418976,"asset_id":29962013,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/50418976/download_file?st=MTc0MDkzMDYzMSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="56904423" href="https://independent.academia.edu/RajmundMichalski">Rajmund Michalski</a><script data-card-contents-for-user="56904423" type="text/json">{"id":56904423,"first_name":"Rajmund","last_name":"Michalski","domain_name":"independent","page_name":"RajmundMichalski","display_name":"Rajmund Michalski","profile_url":"https://independent.academia.edu/RajmundMichalski?f_ri=15372","photo":"/images/s65_no_pic.png"}</script></span></span></li><li class="js-paper-rank-work_29962013 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="29962013"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 29962013, container: ".js-paper-rank-work_29962013", }); });</script></li><li class="js-percentile-work_29962013 InlineList-item InlineList-item--bordered hidden u-tcGrayDark"><span class="percentile-widget hidden"><span class="u-mr2x percentile-widget" style="display: none">•</span><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 29962013; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-percentile-work_29962013"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></li><li class="js-view-count-work_29962013 InlineList-item InlineList-item--bordered hidden"><div><span><span class="js-view-count view-count u-mr2x" data-work-id="29962013"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 29962013; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=29962013]").text(description); $(".js-view-count-work_29962013").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_29962013").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="29962013"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">7</a>  </div><span class="InlineList-item-text u-textTruncate u-pl9x"><a class="InlineList-item-text" data-has-card-for-ri="15372" rel="nofollow" href="https://www.academia.edu/Documents/in/Ion_Chromatography">Ion Chromatography</a>, <script data-card-contents-for-ri="15372" type="text/json">{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="32910" rel="nofollow" href="https://www.academia.edu/Documents/in/Sample_Preparation">Sample Preparation</a>, <script data-card-contents-for-ri="32910" type="text/json">{"id":32910,"name":"Sample Preparation","url":"https://www.academia.edu/Documents/in/Sample_Preparation?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="37434" rel="nofollow" href="https://www.academia.edu/Documents/in/Quantitative_analysis">Quantitative analysis</a>, <script data-card-contents-for-ri="37434" type="text/json">{"id":37434,"name":"Quantitative analysis","url":"https://www.academia.edu/Documents/in/Quantitative_analysis?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="83426" rel="nofollow" href="https://www.academia.edu/Documents/in/Solid_Phase_Extraction">Solid Phase Extraction</a><script data-card-contents-for-ri="83426" type="text/json">{"id":83426,"name":"Solid Phase Extraction","url":"https://www.academia.edu/Documents/in/Solid_Phase_Extraction?f_ri=15372","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=29962013]'), work: {"id":29962013,"title":"Simultaneous determination of fluoride and monofluorophosphate in toothpastes by supressed ion chromatography","created_at":"2016-11-19T08:12:04.028-08:00","url":"https://www.academia.edu/29962013/Simultaneous_determination_of_fluoride_and_monofluorophosphate_in_toothpastes_by_supressed_ion_chromatography?f_ri=15372","dom_id":"work_29962013","summary":"Suppressed ion chromatography with a highly selective and high capacity anion-exchange column is used for the determination of anionic compounds in ten commercially available toothpastes. Minimal sample preparation is needed, requiring only dilution and filtration over a solid-phase extraction cartridge. Quantitative analysis of fluoride and monofluorophosphate, as well as chloride, nitrate, orthophosphate, and sulfate is achieved in one chromatographic run with a total analysis time of 25 minutes. Optimized analytical conditions are validated in terms of accuracy, precision, and total uncertainty, and the results demonstrate the reproducibility of ion chromatography. The coefficient of determination for the anions ranges from 0.9896 to 0.9997. The spiked recoveries for the anions are 88-108%. The change in the fluoride content of the toothpaste with storage time is investigated.","downloadable_attachments":[{"id":50418976,"asset_id":29962013,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":56904423,"first_name":"Rajmund","last_name":"Michalski","domain_name":"independent","page_name":"RajmundMichalski","display_name":"Rajmund Michalski","profile_url":"https://independent.academia.edu/RajmundMichalski?f_ri=15372","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true},{"id":32910,"name":"Sample Preparation","url":"https://www.academia.edu/Documents/in/Sample_Preparation?f_ri=15372","nofollow":true},{"id":37434,"name":"Quantitative analysis","url":"https://www.academia.edu/Documents/in/Quantitative_analysis?f_ri=15372","nofollow":true},{"id":83426,"name":"Solid Phase Extraction","url":"https://www.academia.edu/Documents/in/Solid_Phase_Extraction?f_ri=15372","nofollow":true},{"id":260118,"name":"CHEMICAL SCIENCES","url":"https://www.academia.edu/Documents/in/CHEMICAL_SCIENCES?f_ri=15372"},{"id":611815,"name":"Coefficient of Determination","url":"https://www.academia.edu/Documents/in/Coefficient_of_Determination?f_ri=15372"},{"id":641216,"name":"Quantitative Analysis","url":"https://www.academia.edu/Documents/in/Quantitative_Analysis-1?f_ri=15372"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_31231570" data-work_id="31231570" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/31231570/Development_of_ion_chromatography_methods_for_the_determination_of_trace_anions_in_ultra_pure_water_from_power_plants">Development of ion chromatography methods for the determination of trace anions in ultra pure water from power plants</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">A suppressed ion chromatography (IC) technique, using a carbonate/hydrogen carbonate or a hydroxide eluent, has been evaluated as a monitoring tool for the detection of major anions (F -, Cl -, NO 3 -, PO 4 3and SO 4 2-) in ultra pure... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_31231570" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">A suppressed ion chromatography (IC) technique, using a carbonate/hydrogen carbonate or a hydroxide eluent, has been evaluated as a monitoring tool for the detection of major anions (F -, Cl -, NO 3 -, PO 4 3and SO 4 2-) in ultra pure water and condensed steam from thermal power plants. An electrical conductivity detector with an anion-exchange column (IonPac AS14), an auto self-regenerating suppressor (ASRS), and an isocratic high-pressure pump system were used for the detection of low concentrations of inorganic anions. It was shown that the suppressed IC technique provides a suitable means for preventing possible damage to generating equipment in power plants. The detection limits of the method for the anions of interest were < 0.3 mg/L.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/31231570" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="7da05a5f32dd1ced6a75a0d4d50c1330" rel="nofollow" data-download="{"attachment_id":51641242,"asset_id":31231570,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/51641242/download_file?st=MTc0MDkzMDYzMSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="59243633" href="https://independent.academia.edu/AOnjia">Antonije Onjia</a><script data-card-contents-for-user="59243633" type="text/json">{"id":59243633,"first_name":"Antonije","last_name":"Onjia","domain_name":"independent","page_name":"AOnjia","display_name":"Antonije Onjia","profile_url":"https://independent.academia.edu/AOnjia?f_ri=15372","photo":"/images/s65_no_pic.png"}</script></span></span></li><li class="js-paper-rank-work_31231570 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="31231570"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 31231570, container: ".js-paper-rank-work_31231570", }); });</script></li><li class="js-percentile-work_31231570 InlineList-item InlineList-item--bordered hidden u-tcGrayDark"><span class="percentile-widget hidden"><span class="u-mr2x percentile-widget" style="display: none">•</span><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 31231570; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-percentile-work_31231570"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></li><li class="js-view-count-work_31231570 InlineList-item InlineList-item--bordered hidden"><div><span><span class="js-view-count view-count u-mr2x" data-work-id="31231570"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 31231570; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=31231570]").text(description); $(".js-view-count-work_31231570").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_31231570").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="31231570"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">7</a>  </div><span class="InlineList-item-text u-textTruncate u-pl9x"><a class="InlineList-item-text" data-has-card-for-ri="4107" rel="nofollow" href="https://www.academia.edu/Documents/in/High_Pressure">High Pressure</a>, <script data-card-contents-for-ri="4107" type="text/json">{"id":4107,"name":"High Pressure","url":"https://www.academia.edu/Documents/in/High_Pressure?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="15372" rel="nofollow" href="https://www.academia.edu/Documents/in/Ion_Chromatography">Ion Chromatography</a>, <script data-card-contents-for-ri="15372" type="text/json">{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="34388" rel="nofollow" href="https://www.academia.edu/Documents/in/Power_Plant">Power Plant</a>, <script data-card-contents-for-ri="34388" type="text/json">{"id":34388,"name":"Power Plant","url":"https://www.academia.edu/Documents/in/Power_Plant?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="218256" rel="nofollow" href="https://www.academia.edu/Documents/in/Thermal_Power_Plant">Thermal Power Plant</a><script data-card-contents-for-ri="218256" type="text/json">{"id":218256,"name":"Thermal Power Plant","url":"https://www.academia.edu/Documents/in/Thermal_Power_Plant?f_ri=15372","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=31231570]'), work: {"id":31231570,"title":"Development of ion chromatography methods for the determination of trace anions in ultra pure water from power plants","created_at":"2017-02-04T15:18:14.894-08:00","url":"https://www.academia.edu/31231570/Development_of_ion_chromatography_methods_for_the_determination_of_trace_anions_in_ultra_pure_water_from_power_plants?f_ri=15372","dom_id":"work_31231570","summary":"A suppressed ion chromatography (IC) technique, using a carbonate/hydrogen carbonate or a hydroxide eluent, has been evaluated as a monitoring tool for the detection of major anions (F -, Cl -, NO 3 -, PO 4 3and SO 4 2-) in ultra pure water and condensed steam from thermal power plants. An electrical conductivity detector with an anion-exchange column (IonPac AS14), an auto self-regenerating suppressor (ASRS), and an isocratic high-pressure pump system were used for the detection of low concentrations of inorganic anions. It was shown that the suppressed IC technique provides a suitable means for preventing possible damage to generating equipment in power plants. The detection limits of the method for the anions of interest were \u003c 0.3 mg/L.","downloadable_attachments":[{"id":51641242,"asset_id":31231570,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":59243633,"first_name":"Antonije","last_name":"Onjia","domain_name":"independent","page_name":"AOnjia","display_name":"Antonije Onjia","profile_url":"https://independent.academia.edu/AOnjia?f_ri=15372","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":4107,"name":"High Pressure","url":"https://www.academia.edu/Documents/in/High_Pressure?f_ri=15372","nofollow":true},{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true},{"id":34388,"name":"Power Plant","url":"https://www.academia.edu/Documents/in/Power_Plant?f_ri=15372","nofollow":true},{"id":218256,"name":"Thermal Power Plant","url":"https://www.academia.edu/Documents/in/Thermal_Power_Plant?f_ri=15372","nofollow":true},{"id":260118,"name":"CHEMICAL SCIENCES","url":"https://www.academia.edu/Documents/in/CHEMICAL_SCIENCES?f_ri=15372"},{"id":517026,"name":"Trace analysis","url":"https://www.academia.edu/Documents/in/Trace_analysis?f_ri=15372"},{"id":1202042,"name":"Electric Conductivity","url":"https://www.academia.edu/Documents/in/Electric_Conductivity?f_ri=15372"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_6910958" data-work_id="6910958" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/6910958/Assuring_Traceability_of_Bromide_Measurement_in_KCI_by_Ion_Chromatography">Assuring Traceability of Bromide Measurement in KCI by Ion Chromatography</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">High purity salts are widely applied in several analytical processes, such as, quality control and preparation of the calibration curves. The metrological control of the purity of these salts is essential to ensure the traceability of... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_6910958" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">High purity salts are widely applied in several analytical processes, such as, quality control and preparation of the calibration curves. The metrological control of the purity of these salts is essential to ensure the traceability of analysis based on them. Typically, the contamination of the high purity salts is present in trace levels and the ion chromatography is the most suitable tool for identification and quantification of these contaminants, providing a study of purity of these salts through a sensitive technique, with direct injection, low volume of sample and without the need of pre-concentration. This paper aims to demonstrate traceability of the determination of bromide as impurity in a potassium chloride sample using a validated analytical method through ion chromatography by conductivity suppressor.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/6910958" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="15ca72622d76d0e8c3f20ff345cdb9fd" rel="nofollow" data-download="{"attachment_id":33591732,"asset_id":6910958,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/33591732/download_file?st=MTc0MDkzMDYzMSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="11016850" href="https://ufba.academia.edu/Valneisouza">Valnei souza</a><script data-card-contents-for-user="11016850" type="text/json">{"id":11016850,"first_name":"Valnei","last_name":"souza","domain_name":"ufba","page_name":"Valneisouza","display_name":"Valnei souza","profile_url":"https://ufba.academia.edu/Valneisouza?f_ri=15372","photo":"https://0.academia-photos.com/11016850/3271671/3849948/s65_valnei.souza.jpg"}</script></span></span></li><li class="js-paper-rank-work_6910958 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="6910958"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 6910958, container: ".js-paper-rank-work_6910958", }); });</script></li><li class="js-percentile-work_6910958 InlineList-item InlineList-item--bordered hidden u-tcGrayDark"><span class="percentile-widget hidden"><span class="u-mr2x percentile-widget" style="display: none">•</span><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 6910958; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-percentile-work_6910958"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></li><li class="js-view-count-work_6910958 InlineList-item InlineList-item--bordered hidden"><div><span><span class="js-view-count view-count u-mr2x" data-work-id="6910958"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 6910958; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=6910958]").text(description); $(".js-view-count-work_6910958").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_6910958").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="6910958"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">5</a>  </div><span class="InlineList-item-text u-textTruncate u-pl9x"><a class="InlineList-item-text" data-has-card-for-ri="15372" rel="nofollow" href="https://www.academia.edu/Documents/in/Ion_Chromatography">Ion Chromatography</a>, <script data-card-contents-for-ri="15372" type="text/json">{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="37306" rel="nofollow" href="https://www.academia.edu/Documents/in/Quality_Control">Quality Control</a>, <script data-card-contents-for-ri="37306" type="text/json">{"id":37306,"name":"Quality Control","url":"https://www.academia.edu/Documents/in/Quality_Control?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="330839" rel="nofollow" href="https://www.academia.edu/Documents/in/Analytical_Method">Analytical Method</a>, <script data-card-contents-for-ri="330839" type="text/json">{"id":330839,"name":"Analytical Method","url":"https://www.academia.edu/Documents/in/Analytical_Method?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="1295914" rel="nofollow" href="https://www.academia.edu/Documents/in/Potassium_Chloride">Potassium Chloride</a><script data-card-contents-for-ri="1295914" type="text/json">{"id":1295914,"name":"Potassium Chloride","url":"https://www.academia.edu/Documents/in/Potassium_Chloride?f_ri=15372","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=6910958]'), work: {"id":6910958,"title":"Assuring Traceability of Bromide Measurement in KCI by Ion Chromatography","created_at":"2014-04-29T11:04:12.282-07:00","url":"https://www.academia.edu/6910958/Assuring_Traceability_of_Bromide_Measurement_in_KCI_by_Ion_Chromatography?f_ri=15372","dom_id":"work_6910958","summary":"High purity salts are widely applied in several analytical processes, such as, quality control and preparation of the calibration curves. The metrological control of the purity of these salts is essential to ensure the traceability of analysis based on them. Typically, the contamination of the high purity salts is present in trace levels and the ion chromatography is the most suitable tool for identification and quantification of these contaminants, providing a study of purity of these salts through a sensitive technique, with direct injection, low volume of sample and without the need of pre-concentration. This paper aims to demonstrate traceability of the determination of bromide as impurity in a potassium chloride sample using a validated analytical method through ion chromatography by conductivity suppressor.","downloadable_attachments":[{"id":33591732,"asset_id":6910958,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":11016850,"first_name":"Valnei","last_name":"souza","domain_name":"ufba","page_name":"Valneisouza","display_name":"Valnei souza","profile_url":"https://ufba.academia.edu/Valneisouza?f_ri=15372","photo":"https://0.academia-photos.com/11016850/3271671/3849948/s65_valnei.souza.jpg"}],"research_interests":[{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true},{"id":37306,"name":"Quality Control","url":"https://www.academia.edu/Documents/in/Quality_Control?f_ri=15372","nofollow":true},{"id":330839,"name":"Analytical Method","url":"https://www.academia.edu/Documents/in/Analytical_Method?f_ri=15372","nofollow":true},{"id":1295914,"name":"Potassium Chloride","url":"https://www.academia.edu/Documents/in/Potassium_Chloride?f_ri=15372","nofollow":true},{"id":1333997,"name":"Direct Injection","url":"https://www.academia.edu/Documents/in/Direct_Injection?f_ri=15372"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_25539555" data-work_id="25539555" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/25539555/Protocol_for_analysis_of_trace_metals_and_other_ions_in_filtered_and_unfiltered_fogwater">Protocol for analysis of trace metals and other ions in filtered and unfiltered fogwater</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">A preparative method for the analysis of soluble and total (soluble+insoluble) acidic fogwater fractions was developed. The soluble fraction was obtained by ®ltration through a 0.22-mm Millex ®lter without noticeable dierences whether the... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_25539555" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">A preparative method for the analysis of soluble and total (soluble+insoluble) acidic fogwater fractions was developed. The soluble fraction was obtained by ®ltration through a 0.22-mm Millex ®lter without noticeable dierences whether the ®ltration occurred before or after the sample dilution. Besides, after the test of dierent HNO 3 concentrations, it appeared that the total (soluble+insoluble) fraction could be dissolved prior to analysis by 1.12 M HNO 3 . This method of dissolution was validated by comparison with another method commonly used for mineralisation of soil samples. The two fractions (soluble and total) were analysed using the same analytical method: inductively coupled plasma emission and/or mass spectroscopy. Using the same method for both fractions, we minimised the impact of systematic errors. The developed method was applied to 72 fog samples collected in an urban area (Strasbourg, East of France). They were analysed for their soluble and total fraction for Mg, Ca, Fe, Mn, Zn, Al, Cd, and Pb. These fog samples were also analysed by ion chromatography for Cl À , NO 3 À , SO 4 2À , Na + , NH 4 + , K + , formate, and butyrate. Finally, the calculation of the ionic balance and the percentage dierences was used to verify the ion analysis. #</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/25539555" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="e4a020aba6ff4595e4c9952d6fca1851" rel="nofollow" data-download="{"attachment_id":45871365,"asset_id":25539555,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/45871365/download_file?st=MTc0MDkzMDYzMSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="33613548" href="https://unistra.academia.edu/MauriceMillet">Maurice Millet</a><script data-card-contents-for-user="33613548" type="text/json">{"id":33613548,"first_name":"Maurice","last_name":"Millet","domain_name":"unistra","page_name":"MauriceMillet","display_name":"Maurice Millet","profile_url":"https://unistra.academia.edu/MauriceMillet?f_ri=15372","photo":"/images/s65_no_pic.png"}</script></span></span></li><li class="js-paper-rank-work_25539555 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="25539555"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 25539555, container: ".js-paper-rank-work_25539555", }); 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$(".js-view-count[data-work-id=25539555]").text(description); $(".js-view-count-work_25539555").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_25539555").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="25539555"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">7</a>  </div><span class="InlineList-item-text u-textTruncate u-pl9x"><a class="InlineList-item-text" data-has-card-for-ri="9095" rel="nofollow" href="https://www.academia.edu/Documents/in/Trace_Metals">Trace Metals</a>, <script data-card-contents-for-ri="9095" type="text/json">{"id":9095,"name":"Trace Metals","url":"https://www.academia.edu/Documents/in/Trace_Metals?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="15372" rel="nofollow" href="https://www.academia.edu/Documents/in/Ion_Chromatography">Ion Chromatography</a>, <script data-card-contents-for-ri="15372" type="text/json">{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="25445" rel="nofollow" href="https://www.academia.edu/Documents/in/Environmental_Pollution">Environmental Pollution</a>, <script data-card-contents-for-ri="25445" type="text/json">{"id":25445,"name":"Environmental Pollution","url":"https://www.academia.edu/Documents/in/Environmental_Pollution?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="28235" rel="nofollow" href="https://www.academia.edu/Documents/in/Multidisciplinary">Multidisciplinary</a><script data-card-contents-for-ri="28235" type="text/json">{"id":28235,"name":"Multidisciplinary","url":"https://www.academia.edu/Documents/in/Multidisciplinary?f_ri=15372","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=25539555]'), work: {"id":25539555,"title":"Protocol for analysis of trace metals and other ions in filtered and unfiltered fogwater","created_at":"2016-05-22T23:46:34.587-07:00","url":"https://www.academia.edu/25539555/Protocol_for_analysis_of_trace_metals_and_other_ions_in_filtered_and_unfiltered_fogwater?f_ri=15372","dom_id":"work_25539555","summary":"A preparative method for the analysis of soluble and total (soluble+insoluble) acidic fogwater fractions was developed. The soluble fraction was obtained by ®ltration through a 0.22-mm Millex ®lter without noticeable dierences whether the ®ltration occurred before or after the sample dilution. Besides, after the test of dierent HNO 3 concentrations, it appeared that the total (soluble+insoluble) fraction could be dissolved prior to analysis by 1.12 M HNO 3 . This method of dissolution was validated by comparison with another method commonly used for mineralisation of soil samples. The two fractions (soluble and total) were analysed using the same analytical method: inductively coupled plasma emission and/or mass spectroscopy. Using the same method for both fractions, we minimised the impact of systematic errors. The developed method was applied to 72 fog samples collected in an urban area (Strasbourg, East of France). They were analysed for their soluble and total fraction for Mg, Ca, Fe, Mn, Zn, Al, Cd, and Pb. These fog samples were also analysed by ion chromatography for Cl À , NO 3 À , SO 4 2À , Na + , NH 4 + , K + , formate, and butyrate. Finally, the calculation of the ionic balance and the percentage dierences was used to verify the ion analysis. #","downloadable_attachments":[{"id":45871365,"asset_id":25539555,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":33613548,"first_name":"Maurice","last_name":"Millet","domain_name":"unistra","page_name":"MauriceMillet","display_name":"Maurice Millet","profile_url":"https://unistra.academia.edu/MauriceMillet?f_ri=15372","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":9095,"name":"Trace Metals","url":"https://www.academia.edu/Documents/in/Trace_Metals?f_ri=15372","nofollow":true},{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true},{"id":25445,"name":"Environmental Pollution","url":"https://www.academia.edu/Documents/in/Environmental_Pollution?f_ri=15372","nofollow":true},{"id":28235,"name":"Multidisciplinary","url":"https://www.academia.edu/Documents/in/Multidisciplinary?f_ri=15372","nofollow":true},{"id":330839,"name":"Analytical Method","url":"https://www.academia.edu/Documents/in/Analytical_Method?f_ri=15372"},{"id":707350,"name":"Mass Spectroscopy","url":"https://www.academia.edu/Documents/in/Mass_Spectroscopy?f_ri=15372"},{"id":1984794,"name":"Urban Area","url":"https://www.academia.edu/Documents/in/Urban_Area?f_ri=15372"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_52669187" data-work_id="52669187" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/52669187/Quantitation_of_Perchlorate_Ion_Practices_and_Advances_Applied_to_the_Analysis_of_Common">Quantitation of Perchlorate Ion: Practices and Advances Applied to the Analysis of Common</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">In 1997, low-level perchlorate contamination (&lt;50 ng mL -1 or parts per billion) was discovered in the western U.S. Since that time, it has been found in sites scattered around the nation. Although the Environmental Protection Agency... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_52669187" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">In 1997, low-level perchlorate contamination (&lt;50 ng mL -1 or parts per billion) was discovered in the western U.S. Since that time, it has been found in sites scattered around the nation. Although the Environmental Protection Agency has not established a regulation for perchlorate in drinking water, it has placed perchlorate on the contaminant candidate list (CCL) and the unregulated</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/52669187" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="6f15d1b5c48aa437c07c076b1daf893c" rel="nofollow" data-download="{"attachment_id":69823104,"asset_id":52669187,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/69823104/download_file?st=MTc0MDkzMDYzMSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="202183082" href="https://independent.academia.edu/EdwardUrbansky">Edward Urbansky</a><script data-card-contents-for-user="202183082" type="text/json">{"id":202183082,"first_name":"Edward","last_name":"Urbansky","domain_name":"independent","page_name":"EdwardUrbansky","display_name":"Edward Urbansky","profile_url":"https://independent.academia.edu/EdwardUrbansky?f_ri=15372","photo":"/images/s65_no_pic.png"}</script></span></span></li><li class="js-paper-rank-work_52669187 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="52669187"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 52669187, container: ".js-paper-rank-work_52669187", }); 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Although the Environmental Protection Agency has not established a regulation for perchlorate in drinking water, it has placed perchlorate on the contaminant candidate list (CCL) and the unregulated","downloadable_attachments":[{"id":69823104,"asset_id":52669187,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":202183082,"first_name":"Edward","last_name":"Urbansky","domain_name":"independent","page_name":"EdwardUrbansky","display_name":"Edward Urbansky","profile_url":"https://independent.academia.edu/EdwardUrbansky?f_ri=15372","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":524,"name":"Analytical Chemistry","url":"https://www.academia.edu/Documents/in/Analytical_Chemistry?f_ri=15372","nofollow":true},{"id":5769,"name":"Mass Spectrometry","url":"https://www.academia.edu/Documents/in/Mass_Spectrometry?f_ri=15372","nofollow":true},{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true},{"id":15375,"name":"Capillary electrophoresis","url":"https://www.academia.edu/Documents/in/Capillary_electrophoresis?f_ri=15372","nofollow":true},{"id":15836,"name":"Environmental Chemistry","url":"https://www.academia.edu/Documents/in/Environmental_Chemistry?f_ri=15372"},{"id":37306,"name":"Quality Control","url":"https://www.academia.edu/Documents/in/Quality_Control?f_ri=15372"},{"id":59918,"name":"Quality Assurance","url":"https://www.academia.edu/Documents/in/Quality_Assurance?f_ri=15372"},{"id":120641,"name":"Drinking Water","url":"https://www.academia.edu/Documents/in/Drinking_Water?f_ri=15372"},{"id":222397,"name":"Environmental Analysis","url":"https://www.academia.edu/Documents/in/Environmental_Analysis?f_ri=15372"},{"id":326380,"name":"Liquid Chromatography / Electrospray Ionization Mass Spectrometry","url":"https://www.academia.edu/Documents/in/Liquid_Chromatography_Electrospray_Ionization_Mass_Spectrometry?f_ri=15372"},{"id":330839,"name":"Analytical Method","url":"https://www.academia.edu/Documents/in/Analytical_Method?f_ri=15372"},{"id":338011,"name":"Water Analysis","url":"https://www.academia.edu/Documents/in/Water_Analysis?f_ri=15372"},{"id":1131784,"name":"Environmental Protection Agency","url":"https://www.academia.edu/Documents/in/Environmental_Protection_Agency?f_ri=15372"},{"id":1303573,"name":"Fruit Juice","url":"https://www.academia.edu/Documents/in/Fruit_Juice?f_ri=15372"},{"id":2767544,"name":"Ammonium perchlorate","url":"https://www.academia.edu/Documents/in/Ammonium_perchlorate?f_ri=15372"},{"id":3434660,"name":"Potable water","url":"https://www.academia.edu/Documents/in/Potable_water?f_ri=15372"},{"id":3988601,"name":"limit of detection","url":"https://www.academia.edu/Documents/in/limit_of_detection?f_ri=15372"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_52729789" data-work_id="52729789" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/52729789/Comparison_between_ion_chromatography_and_indirect_photometry_for_the_analytical_determination_of_polyphosphates_in_food">Comparison between ion chromatography and indirect photometry for the analytical determination of polyphosphates in food</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">Based on indirect approach, the reference method for the determination of polyphosphates (PPs) in food is characterized by high variability and possible errors in the final measurement. This method was validated in this work, and then... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_52729789" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">Based on indirect approach, the reference method for the determination of polyphosphates (PPs) in food is characterized by high variability and possible errors in the final measurement. This method was validated in this work, and then compared to the ion chromatography-based method, in terms of validation parameters, applicability to food analysis and management. Regarding validation parameters, the trueness (recovery percentage) and measurement uncertainty of two methods resulted comparable, while the precision of ion chromatography approach was higher. The applicability of two methods was also investigated by analyzing commercials samples, comparing the results to the PPs indicated on the label and then obtaining results in terms of “false positive” and “false negative” responses. No “false positive” responses were obtained using the ion chromatography method, while indirect photometry gave “false positive” responses in 5% of analyzed samples. Relating to “false negative” results, this possibility was verified for all food types tested (meats, dairy products and seafood) when using indirect photometry, and only for seafood when using ion chromatography. In this regard, the percentage of “false negative” responses was equal to 23.3% and 10.0% for indirect photometry and ion chromatography, respectively.<br />The comparison allowed concluding that indirect photometry is useful as “screening technique”, while ion chromatography should be preferred as confirmatory technique.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/52729789" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="d0e743a7ad62ac95cea5e3d30c9b74f9" rel="nofollow" data-download="{"attachment_id":69855282,"asset_id":52729789,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/69855282/download_file?st=MTc0MDkzMDYzMSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="824554" href="https://izsfg.academia.edu/MarcoIammarino">Marco Iammarino</a><script data-card-contents-for-user="824554" type="text/json">{"id":824554,"first_name":"Marco","last_name":"Iammarino","domain_name":"izsfg","page_name":"MarcoIammarino","display_name":"Marco Iammarino","profile_url":"https://izsfg.academia.edu/MarcoIammarino?f_ri=15372","photo":"https://0.academia-photos.com/824554/2780448/10253495/s65_marco.iammarino.jpg"}</script></span></span></li><li class="js-paper-rank-work_52729789 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="52729789"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 52729789, container: ".js-paper-rank-work_52729789", }); 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This method was validated in this work, and then compared to the ion chromatography-based method, in terms of validation parameters, applicability to food analysis and management. Regarding validation parameters, the trueness (recovery percentage) and measurement uncertainty of two methods resulted comparable, while the precision of ion chromatography approach was higher. The applicability of two methods was also investigated by analyzing commercials samples, comparing the results to the PPs indicated on the label and then obtaining results in terms of “false positive” and “false negative” responses. No “false positive” responses were obtained using the ion chromatography method, while indirect photometry gave “false positive” responses in 5% of analyzed samples. Relating to “false negative” results, this possibility was verified for all food types tested (meats, dairy products and seafood) when using indirect photometry, and only for seafood when using ion chromatography. In this regard, the percentage of “false negative” responses was equal to 23.3% and 10.0% for indirect photometry and ion chromatography, respectively.\nThe comparison allowed concluding that indirect photometry is useful as “screening technique”, while ion chromatography should be preferred as confirmatory technique.","downloadable_attachments":[{"id":69855282,"asset_id":52729789,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":824554,"first_name":"Marco","last_name":"Iammarino","domain_name":"izsfg","page_name":"MarcoIammarino","display_name":"Marco Iammarino","profile_url":"https://izsfg.academia.edu/MarcoIammarino?f_ri=15372","photo":"https://0.academia-photos.com/824554/2780448/10253495/s65_marco.iammarino.jpg"}],"research_interests":[{"id":1081,"name":"Food Safety","url":"https://www.academia.edu/Documents/in/Food_Safety?f_ri=15372","nofollow":true},{"id":11210,"name":"Comparative Methods","url":"https://www.academia.edu/Documents/in/Comparative_Methods?f_ri=15372","nofollow":true},{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true},{"id":347430,"name":"Food Additives","url":"https://www.academia.edu/Documents/in/Food_Additives?f_ri=15372","nofollow":true},{"id":613042,"name":"Polyphosphate","url":"https://www.academia.edu/Documents/in/Polyphosphate?f_ri=15372"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_275314" data-work_id="275314" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/275314/Comparison_of_Total_Fluorine_Extractable_Organic_Fluorine_and_Perfluorinated_Compounds_In_the_Blood_of_Wild_and_Pefluorooctanoate_PFOA_Exposed_Rats_Evidence_for_">Comparison of Total Fluorine, Extractable Organic Fluorine and Perfluorinated Compounds In the Blood of Wild and Pefluorooctanoate (PFOA)-Exposed Rats: Evidence for …</a></div></div><div class="u-pb4x u-mt3x"></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/275314" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="ac6e69110b80161183a53beeed8566bd" rel="nofollow" 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type="text/json">{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="103298" rel="nofollow" href="https://www.academia.edu/Documents/in/Blood_sampling">Blood sampling</a>, <script data-card-contents-for-ri="103298" type="text/json">{"id":103298,"name":"Blood sampling","url":"https://www.academia.edu/Documents/in/Blood_sampling?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="315203" rel="nofollow" href="https://www.academia.edu/Documents/in/Fluorine">Fluorine</a><script data-card-contents-for-ri="315203" type="text/json">{"id":315203,"name":"Fluorine","url":"https://www.academia.edu/Documents/in/Fluorine?f_ri=15372","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=275314]'), work: {"id":275314,"title":"Comparison of Total Fluorine, Extractable Organic Fluorine and Perfluorinated Compounds In the Blood of Wild and Pefluorooctanoate (PFOA)-Exposed Rats: Evidence for …","created_at":"2010-07-27T06:07:51.286-07:00","url":"https://www.academia.edu/275314/Comparison_of_Total_Fluorine_Extractable_Organic_Fluorine_and_Perfluorinated_Compounds_In_the_Blood_of_Wild_and_Pefluorooctanoate_PFOA_Exposed_Rats_Evidence_for_?f_ri=15372","dom_id":"work_275314","summary":null,"downloadable_attachments":[{"id":51473230,"asset_id":275314,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":223162,"first_name":"Leo","last_name":"Yeung","domain_name":"utoronto","page_name":"LeoYeung","display_name":"Leo Yeung","profile_url":"https://utoronto.academia.edu/LeoYeung?f_ri=15372","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":524,"name":"Analytical Chemistry","url":"https://www.academia.edu/Documents/in/Analytical_Chemistry?f_ri=15372","nofollow":true},{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true},{"id":103298,"name":"Blood sampling","url":"https://www.academia.edu/Documents/in/Blood_sampling?f_ri=15372","nofollow":true},{"id":315203,"name":"Fluorine","url":"https://www.academia.edu/Documents/in/Fluorine?f_ri=15372","nofollow":true},{"id":357068,"name":"Fraction","url":"https://www.academia.edu/Documents/in/Fraction?f_ri=15372"},{"id":375054,"name":"Rats","url":"https://www.academia.edu/Documents/in/Rats?f_ri=15372"},{"id":531383,"name":"Captive Wild Animals","url":"https://www.academia.edu/Documents/in/Captive_Wild_Animals?f_ri=15372"},{"id":683707,"name":"Extraction Method","url":"https://www.academia.edu/Documents/in/Extraction_Method?f_ri=15372"},{"id":901876,"name":"Sensitivity and Specificity","url":"https://www.academia.edu/Documents/in/Sensitivity_and_Specificity?f_ri=15372"},{"id":1312021,"name":"Environmental Exposure","url":"https://www.academia.edu/Documents/in/Environmental_Exposure?f_ri=15372"},{"id":1423006,"name":"General Population","url":"https://www.academia.edu/Documents/in/General_Population?f_ri=15372"},{"id":1707373,"name":"Mass Balance","url":"https://www.academia.edu/Documents/in/Mass_Balance?f_ri=15372"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_15435193" data-work_id="15435193" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/15435193/Trace_Anion_Determination_in_Concentrated_Nitric_Acid_by_Means_of_Two_Coupled_Ion_Chromatography_Systems">Trace Anion Determination in Concentrated Nitric Acid by Means of Two Coupled Ion Chromatography Systems</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">The analysis of trace anions in concentrated nitric acid requires two online coupled ion chromatography systems for the required selectivity. The first system acts as preseparator of the trace anions from the matrix compounds. The trace... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_15435193" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">The analysis of trace anions in concentrated nitric acid requires two online coupled ion chromatography systems for the required selectivity. The first system acts as preseparator of the trace anions from the matrix compounds. The trace anions are preconcentrated by means of a heart-cut valve and a concentrator column. The second system acts as detection device and allows sensitive determination of chloride, sulfate and phosphate.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/15435193" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="c23baa31c9f6778b7a2221b39f115735" rel="nofollow" data-download="{"attachment_id":43201983,"asset_id":15435193,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/43201983/download_file?st=MTc0MDkzMDYzMSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="34578563" href="https://independent.academia.edu/MagdalenaBiesaga">Magdalena Biesaga</a><script data-card-contents-for-user="34578563" type="text/json">{"id":34578563,"first_name":"Magdalena","last_name":"Biesaga","domain_name":"independent","page_name":"MagdalenaBiesaga","display_name":"Magdalena Biesaga","profile_url":"https://independent.academia.edu/MagdalenaBiesaga?f_ri=15372","photo":"/images/s65_no_pic.png"}</script></span></span></li><li class="js-paper-rank-work_15435193 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="15435193"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 15435193, container: ".js-paper-rank-work_15435193", }); 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The first system acts as preseparator of the trace anions from the matrix compounds. The trace anions are preconcentrated by means of a heart-cut valve and a concentrator column. The second system acts as detection device and allows sensitive determination of chloride, sulfate and phosphate.","downloadable_attachments":[{"id":43201983,"asset_id":15435193,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":34578563,"first_name":"Magdalena","last_name":"Biesaga","domain_name":"independent","page_name":"MagdalenaBiesaga","display_name":"Magdalena Biesaga","profile_url":"https://independent.academia.edu/MagdalenaBiesaga?f_ri=15372","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":524,"name":"Analytical Chemistry","url":"https://www.academia.edu/Documents/in/Analytical_Chemistry?f_ri=15372","nofollow":true},{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true},{"id":297691,"name":"High performance","url":"https://www.academia.edu/Documents/in/High_performance?f_ri=15372","nofollow":true},{"id":668887,"name":"NITRIC ACID","url":"https://www.academia.edu/Documents/in/NITRIC_ACID?f_ri=15372","nofollow":true}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_47663407" data-work_id="47663407" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/47663407/Reactivity_of_natural_organic_matter_fractions_with_chlorine_dioxide_and_ozone">Reactivity of natural organic matter fractions with chlorine dioxide and ozone</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">The effects of ozone and chlorine dioxide on the aquatic natural organic matter (NOM) were studied. The natural as well as oxidised organic matter in aerated and sand filtered water were fractionated using XAD, anion-exchange, and... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_47663407" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">The effects of ozone and chlorine dioxide on the aquatic natural organic matter (NOM) were studied. The natural as well as oxidised organic matter in aerated and sand filtered water were fractionated using XAD, anion-exchange, and cation-exchange resins procedure into humic acid, hydrophobic acids and neutrals, and hydrophilic acids, bases and neutrals. The main NOM components were hydrophobic, while oxidation with both ozone and chlorine dioxide increased the proportion of hydrophilic fractions. High-pressure size exclusion chromatography with UV-254 nm and UV-220 nm detection was used to determine the differences between molecular weight distribution of natural and oxidised organic matter fractions. The main purpose of this paper was to compare the reactivity of individual NOM fractions with oxidants in order to compare the productivity of biodegradable by-products after oxidation with chlorine dioxide and ozone. The quantity as well as the quality of by-products were analysed by means of ion and gas chromatography. r</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/47663407" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="3dc0057fdfdfd041a918de61953b50fd" rel="nofollow" data-download="{"attachment_id":66643306,"asset_id":47663407,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/66643306/download_file?st=MTc0MDkzMDYzMSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="38448653" href="https://independent.academia.edu/AsiaSwietlik">Joanna Swietlik</a><script data-card-contents-for-user="38448653" type="text/json">{"id":38448653,"first_name":"Joanna","last_name":"Swietlik","domain_name":"independent","page_name":"AsiaSwietlik","display_name":"Joanna Swietlik","profile_url":"https://independent.academia.edu/AsiaSwietlik?f_ri=15372","photo":"/images/s65_no_pic.png"}</script></span></span></li><li class="js-paper-rank-work_47663407 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="47663407"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 47663407, container: ".js-paper-rank-work_47663407", }); 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$(".js-view-count[data-work-id=47663407]").text(description); $(".js-view-count-work_47663407").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_47663407").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="47663407"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">20</a>  </div><span class="InlineList-item-text u-textTruncate u-pl10x"><a class="InlineList-item-text" data-has-card-for-ri="4107" rel="nofollow" href="https://www.academia.edu/Documents/in/High_Pressure">High Pressure</a>, <script data-card-contents-for-ri="4107" type="text/json">{"id":4107,"name":"High Pressure","url":"https://www.academia.edu/Documents/in/High_Pressure?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="11801" rel="nofollow" href="https://www.academia.edu/Documents/in/Environmental_Monitoring">Environmental Monitoring</a>, <script data-card-contents-for-ri="11801" type="text/json">{"id":11801,"name":"Environmental Monitoring","url":"https://www.academia.edu/Documents/in/Environmental_Monitoring?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="12124" rel="nofollow" href="https://www.academia.edu/Documents/in/Filtration">Filtration</a>, <script data-card-contents-for-ri="12124" type="text/json">{"id":12124,"name":"Filtration","url":"https://www.academia.edu/Documents/in/Filtration?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="15372" rel="nofollow" href="https://www.academia.edu/Documents/in/Ion_Chromatography">Ion Chromatography</a><script data-card-contents-for-ri="15372" type="text/json">{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=47663407]'), work: {"id":47663407,"title":"Reactivity of natural organic matter fractions with chlorine dioxide and ozone","created_at":"2021-04-23T12:41:00.264-07:00","url":"https://www.academia.edu/47663407/Reactivity_of_natural_organic_matter_fractions_with_chlorine_dioxide_and_ozone?f_ri=15372","dom_id":"work_47663407","summary":"The effects of ozone and chlorine dioxide on the aquatic natural organic matter (NOM) were studied. The natural as well as oxidised organic matter in aerated and sand filtered water were fractionated using XAD, anion-exchange, and cation-exchange resins procedure into humic acid, hydrophobic acids and neutrals, and hydrophilic acids, bases and neutrals. The main NOM components were hydrophobic, while oxidation with both ozone and chlorine dioxide increased the proportion of hydrophilic fractions. High-pressure size exclusion chromatography with UV-254 nm and UV-220 nm detection was used to determine the differences between molecular weight distribution of natural and oxidised organic matter fractions. The main purpose of this paper was to compare the reactivity of individual NOM fractions with oxidants in order to compare the productivity of biodegradable by-products after oxidation with chlorine dioxide and ozone. The quantity as well as the quality of by-products were analysed by means of ion and gas chromatography. r","downloadable_attachments":[{"id":66643306,"asset_id":47663407,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":38448653,"first_name":"Joanna","last_name":"Swietlik","domain_name":"independent","page_name":"AsiaSwietlik","display_name":"Joanna Swietlik","profile_url":"https://independent.academia.edu/AsiaSwietlik?f_ri=15372","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":4107,"name":"High Pressure","url":"https://www.academia.edu/Documents/in/High_Pressure?f_ri=15372","nofollow":true},{"id":11801,"name":"Environmental Monitoring","url":"https://www.academia.edu/Documents/in/Environmental_Monitoring?f_ri=15372","nofollow":true},{"id":12124,"name":"Filtration","url":"https://www.academia.edu/Documents/in/Filtration?f_ri=15372","nofollow":true},{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true},{"id":28235,"name":"Multidisciplinary","url":"https://www.academia.edu/Documents/in/Multidisciplinary?f_ri=15372"},{"id":69788,"name":"Drinking Water Treatment","url":"https://www.academia.edu/Documents/in/Drinking_Water_Treatment?f_ri=15372"},{"id":88797,"name":"Chlorine dioxide","url":"https://www.academia.edu/Documents/in/Chlorine_dioxide?f_ri=15372"},{"id":146410,"name":"Humic acid","url":"https://www.academia.edu/Documents/in/Humic_acid?f_ri=15372"},{"id":166448,"name":"Gas Chromatography","url":"https://www.academia.edu/Documents/in/Gas_Chromatography?f_ri=15372"},{"id":380824,"name":"Ozone","url":"https://www.academia.edu/Documents/in/Ozone?f_ri=15372"},{"id":526952,"name":"Fractionation","url":"https://www.academia.edu/Documents/in/Fractionation?f_ri=15372"},{"id":563382,"name":"Oxidation","url":"https://www.academia.edu/Documents/in/Oxidation?f_ri=15372"},{"id":802500,"name":"Oxides","url":"https://www.academia.edu/Documents/in/Oxides?f_ri=15372"},{"id":886644,"name":"Oxidant","url":"https://www.academia.edu/Documents/in/Oxidant?f_ri=15372"},{"id":908084,"name":"Chlorine Compounds","url":"https://www.academia.edu/Documents/in/Chlorine_Compounds?f_ri=15372"},{"id":970387,"name":"Organic Matter","url":"https://www.academia.edu/Documents/in/Organic_Matter?f_ri=15372"},{"id":1119031,"name":"Cation Exchange","url":"https://www.academia.edu/Documents/in/Cation_Exchange?f_ri=15372"},{"id":1264056,"name":"Natural Organic Matter","url":"https://www.academia.edu/Documents/in/Natural_Organic_Matter?f_ri=15372"},{"id":1297608,"name":"Organic Chemicals","url":"https://www.academia.edu/Documents/in/Organic_Chemicals?f_ri=15372"},{"id":1431843,"name":"Molecular Weight Distribution","url":"https://www.academia.edu/Documents/in/Molecular_Weight_Distribution?f_ri=15372"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_3008609" data-work_id="3008609" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/3008609/Amperometric_Ion_Detector_for_Ion_Chromatography">Amperometric Ion Detector for Ion Chromatography</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">A new type of amperometric detector for nonredox ions based on ion-transfer reactions at the water|2-nitrophenyl octyl ether-poly(vinyl chloride) gel microinterface has been developed. The polarized interface between water and a polymer... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_3008609" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">A new type of amperometric detector for nonredox ions based on ion-transfer reactions at the water|2-nitrophenyl octyl ether-poly(vinyl chloride) gel microinterface has been developed. The polarized interface between water and a polymer composite membrane that can incorporate ionophores such as dibenzo-18-crown-6 and valinomycin provides a selective transducer for an amperometric detection of nonredox ions under flow conditions. Such a sensor is employed as a detector for cation-exchange ion chromatography and shows detectability similar to that obtained with a conductivity detection. The main advantage of this approach is that selectivity can be tailored by the choice of the ionophore and by the polarization potential. As an example, we show how to detect ammonium in the presence of an excess of sodium.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/3008609" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="8a34f7c0997a36cd399ad40de611e541" rel="nofollow" data-download="{"attachment_id":31299978,"asset_id":3008609,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/31299978/download_file?st=MTc0MDkzMDYzMSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="3461614" href="https://epfl.academia.edu/HubertGirault">Hubert Girault</a><script data-card-contents-for-user="3461614" type="text/json">{"id":3461614,"first_name":"Hubert","last_name":"Girault","domain_name":"epfl","page_name":"HubertGirault","display_name":"Hubert Girault","profile_url":"https://epfl.academia.edu/HubertGirault?f_ri=15372","photo":"https://0.academia-photos.com/3461614/1171865/1469640/s65_hubert.girault.jpg"}</script></span></span></li><li class="js-paper-rank-work_3008609 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="3008609"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 3008609, container: ".js-paper-rank-work_3008609", }); });</script></li><li class="js-percentile-work_3008609 InlineList-item InlineList-item--bordered hidden u-tcGrayDark"><span class="percentile-widget hidden"><span class="u-mr2x percentile-widget" style="display: none">•</span><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 3008609; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-percentile-work_3008609"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></li><li class="js-view-count-work_3008609 InlineList-item InlineList-item--bordered hidden"><div><span><span class="js-view-count view-count u-mr2x" data-work-id="3008609"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 3008609; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=3008609]").text(description); $(".js-view-count-work_3008609").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_3008609").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="3008609"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">3</a>  </div><span class="InlineList-item-text u-textTruncate u-pl9x"><a class="InlineList-item-text" data-has-card-for-ri="72" rel="nofollow" href="https://www.academia.edu/Documents/in/Chemical_Engineering">Chemical Engineering</a>, <script data-card-contents-for-ri="72" type="text/json">{"id":72,"name":"Chemical Engineering","url":"https://www.academia.edu/Documents/in/Chemical_Engineering?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="524" rel="nofollow" href="https://www.academia.edu/Documents/in/Analytical_Chemistry">Analytical Chemistry</a>, <script data-card-contents-for-ri="524" type="text/json">{"id":524,"name":"Analytical Chemistry","url":"https://www.academia.edu/Documents/in/Analytical_Chemistry?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="15372" rel="nofollow" href="https://www.academia.edu/Documents/in/Ion_Chromatography">Ion Chromatography</a><script data-card-contents-for-ri="15372" type="text/json">{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=3008609]'), work: {"id":3008609,"title":"Amperometric Ion Detector for Ion Chromatography","created_at":"2013-03-14T22:36:03.601-07:00","url":"https://www.academia.edu/3008609/Amperometric_Ion_Detector_for_Ion_Chromatography?f_ri=15372","dom_id":"work_3008609","summary":"A new type of amperometric detector for nonredox ions based on ion-transfer reactions at the water|2-nitrophenyl octyl ether-poly(vinyl chloride) gel microinterface has been developed. The polarized interface between water and a polymer composite membrane that can incorporate ionophores such as dibenzo-18-crown-6 and valinomycin provides a selective transducer for an amperometric detection of nonredox ions under flow conditions. Such a sensor is employed as a detector for cation-exchange ion chromatography and shows detectability similar to that obtained with a conductivity detection. The main advantage of this approach is that selectivity can be tailored by the choice of the ionophore and by the polarization potential. As an example, we show how to detect ammonium in the presence of an excess of sodium.","downloadable_attachments":[{"id":31299978,"asset_id":3008609,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":3461614,"first_name":"Hubert","last_name":"Girault","domain_name":"epfl","page_name":"HubertGirault","display_name":"Hubert Girault","profile_url":"https://epfl.academia.edu/HubertGirault?f_ri=15372","photo":"https://0.academia-photos.com/3461614/1171865/1469640/s65_hubert.girault.jpg"}],"research_interests":[{"id":72,"name":"Chemical Engineering","url":"https://www.academia.edu/Documents/in/Chemical_Engineering?f_ri=15372","nofollow":true},{"id":524,"name":"Analytical Chemistry","url":"https://www.academia.edu/Documents/in/Analytical_Chemistry?f_ri=15372","nofollow":true},{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_26213167" data-work_id="26213167" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/26213167/Composition_of_the_Finnish_Arctic_aerosol_collection_and_analysis_of_historic_filter_samples">Composition of the Finnish Arctic aerosol: collection and analysis of historic filter samples</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">Week-long samples of total suspended particles have been collected between October 1964 and February 1978 from the Finnish Arctic. Neutron activation analysis, ion chromatography, and light-absorption techniques have been used to analyze... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_26213167" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">Week-long samples of total suspended particles have been collected between October 1964 and February 1978 from the Finnish Arctic. Neutron activation analysis, ion chromatography, and light-absorption techniques have been used to analyze the concentration of several heavy metals and other elements, major ions, methane sulfonate (MSA), and black carbon. Kevo is located near the Kola Peninsula and the effect of the industrial area can be seen. Compared to previous studies of Arctic aerosols carried out in North American Arctic, the Kevo results show higher concentration of anthropogenic pollutants and the seasonal variability for most constituents is weaker than the typical Arctic haze pattern. MSA, a marker of biogenic activity, has a clear seasonal cycle with a peak from April to August. r</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/26213167" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="12db10db75913739687ce2f62f0ea7c0" rel="nofollow" data-download="{"attachment_id":46533328,"asset_id":26213167,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/46533328/download_file?st=MTc0MDkzMDYzMSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="40112950" href="https://clarkson.academia.edu/PhilipHopke">Philip Hopke</a><script data-card-contents-for-user="40112950" type="text/json">{"id":40112950,"first_name":"Philip","last_name":"Hopke","domain_name":"clarkson","page_name":"PhilipHopke","display_name":"Philip Hopke","profile_url":"https://clarkson.academia.edu/PhilipHopke?f_ri=15372","photo":"https://0.academia-photos.com/40112950/11812632/13166191/s65_philip.hopke.jpg"}</script></span></span></li><li class="js-paper-rank-work_26213167 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="26213167"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 26213167, container: ".js-paper-rank-work_26213167", }); });</script></li><li class="js-percentile-work_26213167 InlineList-item InlineList-item--bordered hidden u-tcGrayDark"><span class="percentile-widget hidden"><span class="u-mr2x percentile-widget" style="display: none">•</span><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 26213167; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-percentile-work_26213167"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></li><li class="js-view-count-work_26213167 InlineList-item InlineList-item--bordered hidden"><div><span><span class="js-view-count view-count u-mr2x" data-work-id="26213167"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 26213167; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=26213167]").text(description); $(".js-view-count-work_26213167").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_26213167").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="26213167"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">11</a>  </div><span class="InlineList-item-text u-textTruncate u-pl10x"><a class="InlineList-item-text" data-has-card-for-ri="55" rel="nofollow" href="https://www.academia.edu/Documents/in/Environmental_Engineering">Environmental Engineering</a>, <script data-card-contents-for-ri="55" type="text/json">{"id":55,"name":"Environmental Engineering","url":"https://www.academia.edu/Documents/in/Environmental_Engineering?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="2442" rel="nofollow" href="https://www.academia.edu/Documents/in/Atmospheric_Science">Atmospheric Science</a>, <script data-card-contents-for-ri="2442" type="text/json">{"id":2442,"name":"Atmospheric Science","url":"https://www.academia.edu/Documents/in/Atmospheric_Science?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="4456" rel="nofollow" href="https://www.academia.edu/Documents/in/Time_Series">Time Series</a>, <script data-card-contents-for-ri="4456" type="text/json">{"id":4456,"name":"Time Series","url":"https://www.academia.edu/Documents/in/Time_Series?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="15372" rel="nofollow" href="https://www.academia.edu/Documents/in/Ion_Chromatography">Ion Chromatography</a><script data-card-contents-for-ri="15372" type="text/json">{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=26213167]'), work: {"id":26213167,"title":"Composition of the Finnish Arctic aerosol: collection and analysis of historic filter samples","created_at":"2016-06-16T03:00:53.433-07:00","url":"https://www.academia.edu/26213167/Composition_of_the_Finnish_Arctic_aerosol_collection_and_analysis_of_historic_filter_samples?f_ri=15372","dom_id":"work_26213167","summary":"Week-long samples of total suspended particles have been collected between October 1964 and February 1978 from the Finnish Arctic. Neutron activation analysis, ion chromatography, and light-absorption techniques have been used to analyze the concentration of several heavy metals and other elements, major ions, methane sulfonate (MSA), and black carbon. Kevo is located near the Kola Peninsula and the effect of the industrial area can be seen. Compared to previous studies of Arctic aerosols carried out in North American Arctic, the Kevo results show higher concentration of anthropogenic pollutants and the seasonal variability for most constituents is weaker than the typical Arctic haze pattern. MSA, a marker of biogenic activity, has a clear seasonal cycle with a peak from April to August. r","downloadable_attachments":[{"id":46533328,"asset_id":26213167,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":40112950,"first_name":"Philip","last_name":"Hopke","domain_name":"clarkson","page_name":"PhilipHopke","display_name":"Philip Hopke","profile_url":"https://clarkson.academia.edu/PhilipHopke?f_ri=15372","photo":"https://0.academia-photos.com/40112950/11812632/13166191/s65_philip.hopke.jpg"}],"research_interests":[{"id":55,"name":"Environmental Engineering","url":"https://www.academia.edu/Documents/in/Environmental_Engineering?f_ri=15372","nofollow":true},{"id":2442,"name":"Atmospheric Science","url":"https://www.academia.edu/Documents/in/Atmospheric_Science?f_ri=15372","nofollow":true},{"id":4456,"name":"Time Series","url":"https://www.academia.edu/Documents/in/Time_Series?f_ri=15372","nofollow":true},{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true},{"id":60285,"name":"Atmospheric sciences","url":"https://www.academia.edu/Documents/in/Atmospheric_sciences?f_ri=15372"},{"id":111050,"name":"Heavy Metal","url":"https://www.academia.edu/Documents/in/Heavy_Metal?f_ri=15372"},{"id":156347,"name":"Methane","url":"https://www.academia.edu/Documents/in/Methane?f_ri=15372"},{"id":172270,"name":"Neutron Activation Analysis","url":"https://www.academia.edu/Documents/in/Neutron_Activation_Analysis?f_ri=15372"},{"id":648834,"name":"North American","url":"https://www.academia.edu/Documents/in/North_American?f_ri=15372"},{"id":788163,"name":"Black Carbon","url":"https://www.academia.edu/Documents/in/Black_Carbon?f_ri=15372"},{"id":977081,"name":"Kola Peninsula","url":"https://www.academia.edu/Documents/in/Kola_Peninsula?f_ri=15372"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_24464512 coauthored" data-work_id="24464512" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/24464512/Ion_chromatography_and_liquid_scintillation_counting_coupled_to_determine_%CE%B1_and_%CE%B2_emitters">Ion chromatography and liquid scintillation counting coupled to determine α- and β-emitters</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">We present a rapid procedure for separation and measurement of a-and j3-emitters in environmental water samples. The method makes use of ion-chromatographic (IC) separation and enrichment on cationic columns, followed by detection with a... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_24464512" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">We present a rapid procedure for separation and measurement of a-and j3-emitters in environmental water samples. The method makes use of ion-chromatographic (IC) separation and enrichment on cationic columns, followed by detection with a liquid scintillation counter (LSC). Retention times and their dependencies from HC1 eluent concentration on a DIONEX Ion Pac CS 12 column are presented for Po, Sr and Ra. Radium as a heavy earth alkaline element is eluted from the column with the highest retention times: with 20 mMol HC1 as an eluent, it is separated from the majority of interfering natural radionuclides and fission products. The fractions are collected and measured with a liquid scintillation spectrometer. The general procedure without enrichment and measurement is done in less than 1 h. For a-emitters, the background has been reduced to 0.1 counts/min by applying electronic a//3-discrimination or more preferably using solid scintillator caps. They shift the spectrum of a-emitters to higher energies and allow their separation from ^-emitters even in an activity ratio of a( 210 Po): /K^Sr/ ^ Y) of 1:1000. If a 1 liter water sample is enriched on a pair of guard columns, a sensitivity down to 10 ~3 Bq/1 per radionuclide is obtainable. The arrangement of guard columns and the saturation studies are reported. The saturation behaviour for different cations has been examined.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/24464512" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="cc46495352ff2e51b3c8ca0501b21716" rel="nofollow" data-download="{"attachment_id":44795607,"asset_id":24464512,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/44795607/download_file?st=MTc0MDkzMDYzMSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="47548499" href="https://independent.academia.edu/SMobius">S. Möbius</a><script data-card-contents-for-user="47548499" type="text/json">{"id":47548499,"first_name":"S.","last_name":"Möbius","domain_name":"independent","page_name":"SMobius","display_name":"S. Möbius","profile_url":"https://independent.academia.edu/SMobius?f_ri=15372","photo":"/images/s65_no_pic.png"}</script></span></span><span class="u-displayInlineBlock InlineList-item-text"> and <span class="u-textDecorationUnderline u-clickable InlineList-item-text js-work-more-authors-24464512">+1</span><div class="hidden js-additional-users-24464512"><div><span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a href="https://independent.academia.edu/RAndriambololona">Raoelina Andriambololona</a></span></div></div></span><script>(function(){ var popoverSettings = { el: $('.js-work-more-authors-24464512'), placement: 'bottom', hide_delay: 200, html: true, content: function(){ return $('.js-additional-users-24464512').html(); } } new HoverPopover(popoverSettings); })();</script></li><li class="js-paper-rank-work_24464512 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="24464512"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 24464512, container: ".js-paper-rank-work_24464512", }); });</script></li><li class="js-percentile-work_24464512 InlineList-item InlineList-item--bordered hidden u-tcGrayDark"><span class="percentile-widget hidden"><span class="u-mr2x percentile-widget" style="display: none">•</span><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 24464512; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-percentile-work_24464512"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></li><li class="js-view-count-work_24464512 InlineList-item InlineList-item--bordered hidden"><div><span><span class="js-view-count view-count u-mr2x" data-work-id="24464512"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 24464512; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=24464512]").text(description); $(".js-view-count-work_24464512").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_24464512").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="24464512"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">6</a>  </div><span class="InlineList-item-text u-textTruncate u-pl9x"><a class="InlineList-item-text" data-has-card-for-ri="15372" rel="nofollow" href="https://www.academia.edu/Documents/in/Ion_Chromatography">Ion Chromatography</a>, <script data-card-contents-for-ri="15372" type="text/json">{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="28235" rel="nofollow" href="https://www.academia.edu/Documents/in/Multidisciplinary">Multidisciplinary</a>, <script data-card-contents-for-ri="28235" type="text/json">{"id":28235,"name":"Multidisciplinary","url":"https://www.academia.edu/Documents/in/Multidisciplinary?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="209046" rel="nofollow" href="https://www.academia.edu/Documents/in/Liquid_scintillation">Liquid scintillation</a>, <script data-card-contents-for-ri="209046" type="text/json">{"id":209046,"name":"Liquid scintillation","url":"https://www.academia.edu/Documents/in/Liquid_scintillation?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="321836" rel="nofollow" href="https://www.academia.edu/Documents/in/Spectrum">Spectrum</a><script data-card-contents-for-ri="321836" type="text/json">{"id":321836,"name":"Spectrum","url":"https://www.academia.edu/Documents/in/Spectrum?f_ri=15372","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=24464512]'), work: {"id":24464512,"title":"Ion chromatography and liquid scintillation counting coupled to determine α- and β-emitters","created_at":"2016-04-16T08:50:38.712-07:00","url":"https://www.academia.edu/24464512/Ion_chromatography_and_liquid_scintillation_counting_coupled_to_determine_%CE%B1_and_%CE%B2_emitters?f_ri=15372","dom_id":"work_24464512","summary":"We present a rapid procedure for separation and measurement of a-and j3-emitters in environmental water samples. The method makes use of ion-chromatographic (IC) separation and enrichment on cationic columns, followed by detection with a liquid scintillation counter (LSC). Retention times and their dependencies from HC1 eluent concentration on a DIONEX Ion Pac CS 12 column are presented for Po, Sr and Ra. Radium as a heavy earth alkaline element is eluted from the column with the highest retention times: with 20 mMol HC1 as an eluent, it is separated from the majority of interfering natural radionuclides and fission products. The fractions are collected and measured with a liquid scintillation spectrometer. The general procedure without enrichment and measurement is done in less than 1 h. For a-emitters, the background has been reduced to 0.1 counts/min by applying electronic a//3-discrimination or more preferably using solid scintillator caps. They shift the spectrum of a-emitters to higher energies and allow their separation from ^-emitters even in an activity ratio of a( 210 Po): /K^Sr/ ^ Y) of 1:1000. If a 1 liter water sample is enriched on a pair of guard columns, a sensitivity down to 10 ~3 Bq/1 per radionuclide is obtainable. The arrangement of guard columns and the saturation studies are reported. The saturation behaviour for different cations has been examined.","downloadable_attachments":[{"id":44795607,"asset_id":24464512,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":47548499,"first_name":"S.","last_name":"Möbius","domain_name":"independent","page_name":"SMobius","display_name":"S. Möbius","profile_url":"https://independent.academia.edu/SMobius?f_ri=15372","photo":"/images/s65_no_pic.png"},{"id":47152715,"first_name":"Raoelina","last_name":"Andriambololona","domain_name":"independent","page_name":"RAndriambololona","display_name":"Raoelina Andriambololona","profile_url":"https://independent.academia.edu/RAndriambololona?f_ri=15372","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true},{"id":28235,"name":"Multidisciplinary","url":"https://www.academia.edu/Documents/in/Multidisciplinary?f_ri=15372","nofollow":true},{"id":209046,"name":"Liquid scintillation","url":"https://www.academia.edu/Documents/in/Liquid_scintillation?f_ri=15372","nofollow":true},{"id":321836,"name":"Spectrum","url":"https://www.academia.edu/Documents/in/Spectrum?f_ri=15372","nofollow":true},{"id":875404,"name":"Retention Time","url":"https://www.academia.edu/Documents/in/Retention_Time?f_ri=15372"},{"id":954130,"name":"Liquid Scintillation Counting","url":"https://www.academia.edu/Documents/in/Liquid_Scintillation_Counting?f_ri=15372"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_20154262" data-work_id="20154262" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/20154262/Efficient_separation_of_acetate_and_formate_by_ion_chromatography_Application_to_air_samples_in_a_cultural_heritage_environment">Efficient separation of acetate and formate by ion chromatography: Application to air samples in a cultural heritage environment</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">A method for the separation of acetate and formate anions by ion chromatography has been optimized under various measurement conditions (e.g. the composition of the mobile phase, and the flow rate of the eluent). For this purpose, two... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_20154262" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">A method for the separation of acetate and formate anions by ion chromatography has been optimized under various measurement conditions (e.g. the composition of the mobile phase, and the flow rate of the eluent). For this purpose, two different analytical columns were examined: the IonPac AS14 (250 mm × 4 mm i.d.; designed mostly for the separation of inorganic anions) and the Allsep A-2 (150 mm × 4.6 mm i.d.; designed for the separation of low-molecular mass organic acids). However, nearly baseline separation of acetate and formate has been found on each column using the following conditions: (i) IonPac AS14 column and 2.0 mM Na 2 B 4 O 7 solution as an eluent with a flow rate of 1.0 ml/min, or (ii) Allsep A-2 column and an eluent containing a mixture of 1.2 mM Na 2 CO 3 plus 1.5 mM NaHCO 3 with a flow rate of 1.3 ml/min. Additionally, the separation of fluoride from acetate and formate on both columns was studied. On the IonPac AS14 column it was possible to separate all three investigated anions. However, on the Allsep A-2 column, when the concentration of fluoride was comparable to, or higher than acetate, it was impossible to achieve good separation of these two anions, even using the optimized elution procedure. Therefore, the measurements of real samples were carried out with the use of IonPac AS14 column. The concentrations of acetate and formate have been determined in the air samples of the Cathedral of Cologne (Germany), after sampling the corresponding acids by passive diffusion tubes. Average concentrations of 122 and 9 g/m 3 for acetic and formic acids were found, respectively, inside the Cathedral and in a depot with medieval stained glass panels.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/20154262" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="4fd12f48bf172d2001263303675b5970" rel="nofollow" data-download="{"attachment_id":41215902,"asset_id":20154262,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/41215902/download_file?st=MTc0MDkzMDYzMSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="41261393" href="https://independent.academia.edu/FelixDeutsch">Felix Deutsch</a><script data-card-contents-for-user="41261393" type="text/json">{"id":41261393,"first_name":"Felix","last_name":"Deutsch","domain_name":"independent","page_name":"FelixDeutsch","display_name":"Felix Deutsch","profile_url":"https://independent.academia.edu/FelixDeutsch?f_ri=15372","photo":"/images/s65_no_pic.png"}</script></span></span></li><li class="js-paper-rank-work_20154262 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="20154262"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 20154262, container: ".js-paper-rank-work_20154262", }); });</script></li><li class="js-percentile-work_20154262 InlineList-item InlineList-item--bordered hidden u-tcGrayDark"><span class="percentile-widget hidden"><span class="u-mr2x percentile-widget" style="display: none">•</span><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 20154262; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-percentile-work_20154262"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></li><li class="js-view-count-work_20154262 InlineList-item InlineList-item--bordered hidden"><div><span><span class="js-view-count view-count u-mr2x" data-work-id="20154262"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 20154262; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=20154262]").text(description); $(".js-view-count-work_20154262").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_20154262").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="20154262"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">8</a>  </div><span class="InlineList-item-text u-textTruncate u-pl9x"><a class="InlineList-item-text" data-has-card-for-ri="524" rel="nofollow" href="https://www.academia.edu/Documents/in/Analytical_Chemistry">Analytical Chemistry</a>, <script data-card-contents-for-ri="524" type="text/json">{"id":524,"name":"Analytical Chemistry","url":"https://www.academia.edu/Documents/in/Analytical_Chemistry?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="2132" rel="nofollow" href="https://www.academia.edu/Documents/in/Cultural_Heritage">Cultural Heritage</a>, <script data-card-contents-for-ri="2132" type="text/json">{"id":2132,"name":"Cultural Heritage","url":"https://www.academia.edu/Documents/in/Cultural_Heritage?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="4592" rel="nofollow" href="https://www.academia.edu/Documents/in/Indoor_Air_Quality">Indoor Air Quality</a>, <script data-card-contents-for-ri="4592" type="text/json">{"id":4592,"name":"Indoor Air Quality","url":"https://www.academia.edu/Documents/in/Indoor_Air_Quality?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="15372" rel="nofollow" href="https://www.academia.edu/Documents/in/Ion_Chromatography">Ion Chromatography</a><script data-card-contents-for-ri="15372" type="text/json">{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=20154262]'), work: {"id":20154262,"title":"Efficient separation of acetate and formate by ion chromatography: Application to air samples in a cultural heritage environment","created_at":"2016-01-11T00:46:42.299-08:00","url":"https://www.academia.edu/20154262/Efficient_separation_of_acetate_and_formate_by_ion_chromatography_Application_to_air_samples_in_a_cultural_heritage_environment?f_ri=15372","dom_id":"work_20154262","summary":"A method for the separation of acetate and formate anions by ion chromatography has been optimized under various measurement conditions (e.g. the composition of the mobile phase, and the flow rate of the eluent). For this purpose, two different analytical columns were examined: the IonPac AS14 (250 mm × 4 mm i.d.; designed mostly for the separation of inorganic anions) and the Allsep A-2 (150 mm × 4.6 mm i.d.; designed for the separation of low-molecular mass organic acids). However, nearly baseline separation of acetate and formate has been found on each column using the following conditions: (i) IonPac AS14 column and 2.0 mM Na 2 B 4 O 7 solution as an eluent with a flow rate of 1.0 ml/min, or (ii) Allsep A-2 column and an eluent containing a mixture of 1.2 mM Na 2 CO 3 plus 1.5 mM NaHCO 3 with a flow rate of 1.3 ml/min. Additionally, the separation of fluoride from acetate and formate on both columns was studied. On the IonPac AS14 column it was possible to separate all three investigated anions. However, on the Allsep A-2 column, when the concentration of fluoride was comparable to, or higher than acetate, it was impossible to achieve good separation of these two anions, even using the optimized elution procedure. Therefore, the measurements of real samples were carried out with the use of IonPac AS14 column. The concentrations of acetate and formate have been determined in the air samples of the Cathedral of Cologne (Germany), after sampling the corresponding acids by passive diffusion tubes. Average concentrations of 122 and 9 g/m 3 for acetic and formic acids were found, respectively, inside the Cathedral and in a depot with medieval stained glass panels.","downloadable_attachments":[{"id":41215902,"asset_id":20154262,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":41261393,"first_name":"Felix","last_name":"Deutsch","domain_name":"independent","page_name":"FelixDeutsch","display_name":"Felix Deutsch","profile_url":"https://independent.academia.edu/FelixDeutsch?f_ri=15372","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":524,"name":"Analytical Chemistry","url":"https://www.academia.edu/Documents/in/Analytical_Chemistry?f_ri=15372","nofollow":true},{"id":2132,"name":"Cultural Heritage","url":"https://www.academia.edu/Documents/in/Cultural_Heritage?f_ri=15372","nofollow":true},{"id":4592,"name":"Indoor Air Quality","url":"https://www.academia.edu/Documents/in/Indoor_Air_Quality?f_ri=15372","nofollow":true},{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true},{"id":60056,"name":"Air Sampling","url":"https://www.academia.edu/Documents/in/Air_Sampling?f_ri=15372"},{"id":396848,"name":"Formic Acid","url":"https://www.academia.edu/Documents/in/Formic_Acid?f_ri=15372"},{"id":898062,"name":"Flow Rate","url":"https://www.academia.edu/Documents/in/Flow_Rate?f_ri=15372"},{"id":1701407,"name":"Organic Acid","url":"https://www.academia.edu/Documents/in/Organic_Acid?f_ri=15372"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_10399259 coauthored" data-work_id="10399259" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/10399259/Ion_chromatographic_determination_of_hydrolysis_products_of_hexafluorophosphate_salts_in_aqueous_solution">Ion chromatographic determination of hydrolysis products of hexafluorophosphate salts in aqueous solution</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">In this work, hydrolysis of three different hexafluorophosphate salts in purified water was investigated. Aqueous samples of lithium hexafluorophosphate (LiPF 6 ), sodium hexafluorophosphate (NaPF 6 ) and potassium hexafluorophosphate... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_10399259" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">In this work, hydrolysis of three different hexafluorophosphate salts in purified water was investigated. Aqueous samples of lithium hexafluorophosphate (LiPF 6 ), sodium hexafluorophosphate (NaPF 6 ) and potassium hexafluorophosphate (KPF 6 ) were prepared and stored for different times. Ion chromatography (IC) with UV as well as non-suppressed and suppressed conductivity detection was used for the analysis of the reaction products. For the detection and identification of the formed decomposition products, an IC method using IonPac AS14A 250 mm × 4.0 mm i.d. column and 2.5 mM KHCO 3 -2.5 mM K 2 CO 3 eluent was established. Besides hexafluorophosphate, four other anionic species were detected in fresh and matured aqueous solutions. The hydrolysis products fluoride (F − ), monofluorophosphate (HPO 3 F − ), phosphate (HPO 4 2− ) and difluorophosphate (PO 2 F 2 − ) were found and were unambiguously identified by means of standards or electrospray ionization mass spectrometry (ESI-MS). It was shown that stability of hexafluorophosphate solutions depends on the nature of the counter ion and decreases in the order potassium > sodium > lithium.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/10399259" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="f3fbc4cf829d9a818dd577243e688800" rel="nofollow" data-download="{"attachment_id":47409590,"asset_id":10399259,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/47409590/download_file?st=MTc0MDkzMDYzMSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="25564311" href="https://humus.academia.edu/PavelNesterenko">Pavel Nesterenko</a><script data-card-contents-for-user="25564311" type="text/json">{"id":25564311,"first_name":"Pavel","last_name":"Nesterenko","domain_name":"humus","page_name":"PavelNesterenko","display_name":"Pavel Nesterenko","profile_url":"https://humus.academia.edu/PavelNesterenko?f_ri=15372","photo":"https://0.academia-photos.com/25564311/14946899/15702517/s65_pavel.nesterenko.jpg"}</script></span></span><span class="u-displayInlineBlock InlineList-item-text"> and <span class="u-textDecorationUnderline u-clickable InlineList-item-text js-work-more-authors-10399259">+1</span><div class="hidden js-additional-users-10399259"><div><span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a href="https://uni-muenster.academia.edu/SaschaNowak">Sascha Nowak</a></span></div></div></span><script>(function(){ var popoverSettings = { el: $('.js-work-more-authors-10399259'), placement: 'bottom', hide_delay: 200, html: true, content: function(){ return $('.js-additional-users-10399259').html(); } } new HoverPopover(popoverSettings); })();</script></li><li class="js-paper-rank-work_10399259 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="10399259"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 10399259, container: ".js-paper-rank-work_10399259", }); });</script></li><li class="js-percentile-work_10399259 InlineList-item InlineList-item--bordered hidden u-tcGrayDark"><span class="percentile-widget hidden"><span class="u-mr2x percentile-widget" style="display: none">•</span><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 10399259; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-percentile-work_10399259"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></li><li class="js-view-count-work_10399259 InlineList-item InlineList-item--bordered hidden"><div><span><span class="js-view-count view-count u-mr2x" data-work-id="10399259"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 10399259; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=10399259]").text(description); $(".js-view-count-work_10399259").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_10399259").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="10399259"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">4</a>  </div><span class="InlineList-item-text u-textTruncate u-pl9x"><a class="InlineList-item-text" data-has-card-for-ri="524" rel="nofollow" href="https://www.academia.edu/Documents/in/Analytical_Chemistry">Analytical Chemistry</a>, <script data-card-contents-for-ri="524" type="text/json">{"id":524,"name":"Analytical Chemistry","url":"https://www.academia.edu/Documents/in/Analytical_Chemistry?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="15372" rel="nofollow" href="https://www.academia.edu/Documents/in/Ion_Chromatography">Ion Chromatography</a>, <script data-card-contents-for-ri="15372" type="text/json">{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="223513" rel="nofollow" href="https://www.academia.edu/Documents/in/Conductivity">Conductivity</a>, <script data-card-contents-for-ri="223513" type="text/json">{"id":223513,"name":"Conductivity","url":"https://www.academia.edu/Documents/in/Conductivity?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="1030794" rel="nofollow" href="https://www.academia.edu/Documents/in/Hydrolysis">Hydrolysis</a><script data-card-contents-for-ri="1030794" type="text/json">{"id":1030794,"name":"Hydrolysis","url":"https://www.academia.edu/Documents/in/Hydrolysis?f_ri=15372","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=10399259]'), work: {"id":10399259,"title":"Ion chromatographic determination of hydrolysis products of hexafluorophosphate salts in aqueous solution","created_at":"2015-01-30T15:11:28.038-08:00","url":"https://www.academia.edu/10399259/Ion_chromatographic_determination_of_hydrolysis_products_of_hexafluorophosphate_salts_in_aqueous_solution?f_ri=15372","dom_id":"work_10399259","summary":"In this work, hydrolysis of three different hexafluorophosphate salts in purified water was investigated. Aqueous samples of lithium hexafluorophosphate (LiPF 6 ), sodium hexafluorophosphate (NaPF 6 ) and potassium hexafluorophosphate (KPF 6 ) were prepared and stored for different times. Ion chromatography (IC) with UV as well as non-suppressed and suppressed conductivity detection was used for the analysis of the reaction products. For the detection and identification of the formed decomposition products, an IC method using IonPac AS14A 250 mm × 4.0 mm i.d. column and 2.5 mM KHCO 3 -2.5 mM K 2 CO 3 eluent was established. Besides hexafluorophosphate, four other anionic species were detected in fresh and matured aqueous solutions. The hydrolysis products fluoride (F − ), monofluorophosphate (HPO 3 F − ), phosphate (HPO 4 2− ) and difluorophosphate (PO 2 F 2 − ) were found and were unambiguously identified by means of standards or electrospray ionization mass spectrometry (ESI-MS). It was shown that stability of hexafluorophosphate solutions depends on the nature of the counter ion and decreases in the order potassium \u003e sodium \u003e lithium.","downloadable_attachments":[{"id":47409590,"asset_id":10399259,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":25564311,"first_name":"Pavel","last_name":"Nesterenko","domain_name":"humus","page_name":"PavelNesterenko","display_name":"Pavel Nesterenko","profile_url":"https://humus.academia.edu/PavelNesterenko?f_ri=15372","photo":"https://0.academia-photos.com/25564311/14946899/15702517/s65_pavel.nesterenko.jpg"},{"id":35298332,"first_name":"Sascha","last_name":"Nowak","domain_name":"uni-muenster","page_name":"SaschaNowak","display_name":"Sascha Nowak","profile_url":"https://uni-muenster.academia.edu/SaschaNowak?f_ri=15372","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":524,"name":"Analytical Chemistry","url":"https://www.academia.edu/Documents/in/Analytical_Chemistry?f_ri=15372","nofollow":true},{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true},{"id":223513,"name":"Conductivity","url":"https://www.academia.edu/Documents/in/Conductivity?f_ri=15372","nofollow":true},{"id":1030794,"name":"Hydrolysis","url":"https://www.academia.edu/Documents/in/Hydrolysis?f_ri=15372","nofollow":true}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_6042146" data-work_id="6042146" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/6042146/Trace_anion_determination_in_concentrated_hydrofluoric_acid_solutions_by_two_dimensional_ion_chromatography">Trace anion determination in concentrated hydrofluoric acid solutions by two-dimensional ion chromatography</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">Since years, ion exclusion chromatography (ICE) has been the standard method to separate strong acid analyte anions from concentrated weak acid matrices such as hydrofluoric acid (HF). In this work, the commercially available IonPac... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_6042146" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">Since years, ion exclusion chromatography (ICE) has been the standard method to separate strong acid analyte anions from concentrated weak acid matrices such as hydrofluoric acid (HF). In this work, the commercially available IonPac ICE-AS1 column was used to separate trace levels of chloride, nitrate, sulfate and phosphate from HF solutions at 20% (w/w). The efficiency of the separation was studied in more detail using techniques such as ion chromatography (IC), inductively coupled plasma optical emission spectrometry (ICP-OES) and ICP-mass spectrometry (ICP-MS). For 20% (w/w) HF solutions and at a water carrier flow-rate of 0.50 ml/min, the cut window was set from 8.5 to 14.5 min. Under these conditions, analyte recoveries of better than 90% were obtained for chloride, nitrate and sulfate, but only about 75% for phosphate. The HF rejection efficiency was better than 99.9%. It was found that the ICP techniques, measuring total element levels and not species, yielded significantly higher recoveries for phosphorus and sulfur compared to IC. Evidence will be given that part of the added phosphorus (∼15% for an addition of 10 mg PO 4 /kg) is present as mono-fluorophosphoric acid (H 2 FPO 3 ). In the case of sulfate, the difference between IC and ICP-MS could be attributed to an important matrix effect from the residual HF concentration.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/6042146" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="016e9b4a2d523fbb4933a12f6e3dae0f" rel="nofollow" data-download="{"attachment_id":49043204,"asset_id":6042146,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/49043204/download_file?st=MTc0MDkzMDYzMSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="9072974" href="https://ucc.academia.edu/monooe">mono oe</a><script data-card-contents-for-user="9072974" type="text/json">{"id":9072974,"first_name":"mono","last_name":"oe","domain_name":"ucc","page_name":"monooe","display_name":"mono oe","profile_url":"https://ucc.academia.edu/monooe?f_ri=15372","photo":"/images/s65_no_pic.png"}</script></span></span></li><li class="js-paper-rank-work_6042146 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="6042146"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 6042146, container: ".js-paper-rank-work_6042146", }); });</script></li><li class="js-percentile-work_6042146 InlineList-item InlineList-item--bordered hidden u-tcGrayDark"><span class="percentile-widget hidden"><span class="u-mr2x percentile-widget" style="display: none">•</span><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 6042146; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-percentile-work_6042146"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></li><li class="js-view-count-work_6042146 InlineList-item InlineList-item--bordered hidden"><div><span><span class="js-view-count view-count u-mr2x" data-work-id="6042146"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 6042146; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=6042146]").text(description); $(".js-view-count-work_6042146").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_6042146").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="6042146"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">27</a>  </div><span class="InlineList-item-text u-textTruncate u-pl10x"><a class="InlineList-item-text" data-has-card-for-ri="48" rel="nofollow" href="https://www.academia.edu/Documents/in/Engineering">Engineering</a>, <script data-card-contents-for-ri="48" type="text/json">{"id":48,"name":"Engineering","url":"https://www.academia.edu/Documents/in/Engineering?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="428" rel="nofollow" href="https://www.academia.edu/Documents/in/Algorithms">Algorithms</a>, <script data-card-contents-for-ri="428" type="text/json">{"id":428,"name":"Algorithms","url":"https://www.academia.edu/Documents/in/Algorithms?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="923" rel="nofollow" href="https://www.academia.edu/Documents/in/Technology">Technology</a>, <script data-card-contents-for-ri="923" type="text/json">{"id":923,"name":"Technology","url":"https://www.academia.edu/Documents/in/Technology?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="5769" rel="nofollow" href="https://www.academia.edu/Documents/in/Mass_Spectrometry">Mass Spectrometry</a><script data-card-contents-for-ri="5769" type="text/json">{"id":5769,"name":"Mass Spectrometry","url":"https://www.academia.edu/Documents/in/Mass_Spectrometry?f_ri=15372","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=6042146]'), work: {"id":6042146,"title":"Trace anion determination in concentrated hydrofluoric acid solutions by two-dimensional ion chromatography","created_at":"2014-02-11T22:47:47.437-08:00","url":"https://www.academia.edu/6042146/Trace_anion_determination_in_concentrated_hydrofluoric_acid_solutions_by_two_dimensional_ion_chromatography?f_ri=15372","dom_id":"work_6042146","summary":"Since years, ion exclusion chromatography (ICE) has been the standard method to separate strong acid analyte anions from concentrated weak acid matrices such as hydrofluoric acid (HF). In this work, the commercially available IonPac ICE-AS1 column was used to separate trace levels of chloride, nitrate, sulfate and phosphate from HF solutions at 20% (w/w). The efficiency of the separation was studied in more detail using techniques such as ion chromatography (IC), inductively coupled plasma optical emission spectrometry (ICP-OES) and ICP-mass spectrometry (ICP-MS). For 20% (w/w) HF solutions and at a water carrier flow-rate of 0.50 ml/min, the cut window was set from 8.5 to 14.5 min. Under these conditions, analyte recoveries of better than 90% were obtained for chloride, nitrate and sulfate, but only about 75% for phosphate. The HF rejection efficiency was better than 99.9%. It was found that the ICP techniques, measuring total element levels and not species, yielded significantly higher recoveries for phosphorus and sulfur compared to IC. Evidence will be given that part of the added phosphorus (∼15% for an addition of 10 mg PO 4 /kg) is present as mono-fluorophosphoric acid (H 2 FPO 3 ). In the case of sulfate, the difference between IC and ICP-MS could be attributed to an important matrix effect from the residual HF concentration.","downloadable_attachments":[{"id":49043204,"asset_id":6042146,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":9072974,"first_name":"mono","last_name":"oe","domain_name":"ucc","page_name":"monooe","display_name":"mono oe","profile_url":"https://ucc.academia.edu/monooe?f_ri=15372","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":48,"name":"Engineering","url":"https://www.academia.edu/Documents/in/Engineering?f_ri=15372","nofollow":true},{"id":428,"name":"Algorithms","url":"https://www.academia.edu/Documents/in/Algorithms?f_ri=15372","nofollow":true},{"id":923,"name":"Technology","url":"https://www.academia.edu/Documents/in/Technology?f_ri=15372","nofollow":true},{"id":5769,"name":"Mass Spectrometry","url":"https://www.academia.edu/Documents/in/Mass_Spectrometry?f_ri=15372","nofollow":true},{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372"},{"id":37306,"name":"Quality Control","url":"https://www.academia.edu/Documents/in/Quality_Control?f_ri=15372"},{"id":53108,"name":"Phosphorus","url":"https://www.academia.edu/Documents/in/Phosphorus?f_ri=15372"},{"id":74773,"name":"Gradient","url":"https://www.academia.edu/Documents/in/Gradient?f_ri=15372"},{"id":96893,"name":"Calibration","url":"https://www.academia.edu/Documents/in/Calibration?f_ri=15372"},{"id":97946,"name":"Hydrofluoric acid","url":"https://www.academia.edu/Documents/in/Hydrofluoric_acid?f_ri=15372"},{"id":122402,"name":"Nitrates","url":"https://www.academia.edu/Documents/in/Nitrates?f_ri=15372"},{"id":146740,"name":"Impurity","url":"https://www.academia.edu/Documents/in/Impurity?f_ri=15372"},{"id":168891,"name":"Chemical Analysis","url":"https://www.academia.edu/Documents/in/Chemical_Analysis?f_ri=15372"},{"id":225787,"name":"High Performance Liquid Chromatography","url":"https://www.academia.edu/Documents/in/High_Performance_Liquid_Chromatography?f_ri=15372"},{"id":260118,"name":"CHEMICAL SCIENCES","url":"https://www.academia.edu/Documents/in/CHEMICAL_SCIENCES?f_ri=15372"},{"id":263252,"name":"Anions","url":"https://www.academia.edu/Documents/in/Anions?f_ri=15372"},{"id":419305,"name":"Comprehensive Two Dimensional Gas Chromatography","url":"https://www.academia.edu/Documents/in/Comprehensive_Two_Dimensional_Gas_Chromatography?f_ri=15372"},{"id":541785,"name":"Phosphates","url":"https://www.academia.edu/Documents/in/Phosphates?f_ri=15372"},{"id":549280,"name":"Reproducibility of Results","url":"https://www.academia.edu/Documents/in/Reproducibility_of_Results?f_ri=15372"},{"id":898062,"name":"Flow Rate","url":"https://www.academia.edu/Documents/in/Flow_Rate?f_ri=15372"},{"id":960388,"name":"Edge and Matrix Effects","url":"https://www.academia.edu/Documents/in/Edge_and_Matrix_Effects?f_ri=15372"},{"id":1006086,"name":"Matrix Effect","url":"https://www.academia.edu/Documents/in/Matrix_Effect?f_ri=15372"},{"id":1006220,"name":"CO2 Elimination","url":"https://www.academia.edu/Documents/in/CO2_Elimination?f_ri=15372"},{"id":1216548,"name":"Ion Exchange Resin","url":"https://www.academia.edu/Documents/in/Ion_Exchange_Resin?f_ri=15372"},{"id":1257974,"name":"Ions","url":"https://www.academia.edu/Documents/in/Ions?f_ri=15372"},{"id":1663770,"name":"Sulfates","url":"https://www.academia.edu/Documents/in/Sulfates?f_ri=15372"},{"id":2260515,"name":"Chlorides","url":"https://www.academia.edu/Documents/in/Chlorides?f_ri=15372"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_12538036" data-work_id="12538036" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/12538036/Preparation_characterization_of_surfactants_modified_clay_minerals_and_nitrate_adsorption">Preparation, characterization of surfactants modified clay minerals and nitrate adsorption</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">Organic surfactants modified clay minerals are usually used as adsorbents for hydrophobic organic contaminants remediation; this work however has shown organoclays can also work as adsorbents for hydrophilic anionic contaminant... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_12538036" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">Organic surfactants modified clay minerals are usually used as adsorbents for hydrophobic organic contaminants remediation; this work however has shown organoclays can also work as adsorbents for hydrophilic anionic contaminant immobilization. Organoclays were prepared based on halloysite, kaolinite and bentonite and used for nitrate adsorption, which are significant for providing mechanism for the adsorption of anionic contaminants from waste water. XRD was used to characterize unmodified and surfactants modified clay minerals. Thermogravimetric analysis (TG) was used to determine the thermal stability and actual loading of surfactant molecules. Ion chromatography (IC) was used to determine changes of nitrate concentration before and after adsorption by these organoclays. These organoclays showed different removal capacities for anionic ions from water and adsorption mechanism was investigated.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/12538036" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="7a4dae9a7700c71db0a32256be175d23" rel="nofollow" data-download="{"attachment_id":46104420,"asset_id":12538036,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/46104420/download_file?st=MTc0MDkzMDYzMSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="31432495" href="https://independent.academia.edu/RaviNaidu5">Ravi Naidu</a><script data-card-contents-for-user="31432495" type="text/json">{"id":31432495,"first_name":"Ravi","last_name":"Naidu","domain_name":"independent","page_name":"RaviNaidu5","display_name":"Ravi Naidu","profile_url":"https://independent.academia.edu/RaviNaidu5?f_ri=15372","photo":"/images/s65_no_pic.png"}</script></span></span></li><li class="js-paper-rank-work_12538036 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="12538036"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 12538036, container: ".js-paper-rank-work_12538036", }); });</script></li><li class="js-percentile-work_12538036 InlineList-item InlineList-item--bordered hidden u-tcGrayDark"><span class="percentile-widget hidden"><span class="u-mr2x percentile-widget" style="display: none">•</span><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 12538036; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-percentile-work_12538036"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></li><li class="js-view-count-work_12538036 InlineList-item InlineList-item--bordered hidden"><div><span><span class="js-view-count view-count u-mr2x" data-work-id="12538036"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 12538036; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=12538036]").text(description); $(".js-view-count-work_12538036").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_12538036").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="12538036"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">14</a>  </div><span class="InlineList-item-text u-textTruncate u-pl10x"><a class="InlineList-item-text" data-has-card-for-ri="48" rel="nofollow" href="https://www.academia.edu/Documents/in/Engineering">Engineering</a>, <script data-card-contents-for-ri="48" type="text/json">{"id":48,"name":"Engineering","url":"https://www.academia.edu/Documents/in/Engineering?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="400" rel="nofollow" href="https://www.academia.edu/Documents/in/Earth_Sciences">Earth Sciences</a>, <script data-card-contents-for-ri="400" type="text/json">{"id":400,"name":"Earth Sciences","url":"https://www.academia.edu/Documents/in/Earth_Sciences?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="15372" rel="nofollow" href="https://www.academia.edu/Documents/in/Ion_Chromatography">Ion Chromatography</a>, <script data-card-contents-for-ri="15372" type="text/json">{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="21728" rel="nofollow" href="https://www.academia.edu/Documents/in/Clay_Minerals">Clay Minerals</a><script data-card-contents-for-ri="21728" type="text/json">{"id":21728,"name":"Clay Minerals","url":"https://www.academia.edu/Documents/in/Clay_Minerals?f_ri=15372","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=12538036]'), work: {"id":12538036,"title":"Preparation, characterization of surfactants modified clay minerals and nitrate adsorption","created_at":"2015-05-22T19:54:01.583-07:00","url":"https://www.academia.edu/12538036/Preparation_characterization_of_surfactants_modified_clay_minerals_and_nitrate_adsorption?f_ri=15372","dom_id":"work_12538036","summary":"Organic surfactants modified clay minerals are usually used as adsorbents for hydrophobic organic contaminants remediation; this work however has shown organoclays can also work as adsorbents for hydrophilic anionic contaminant immobilization. Organoclays were prepared based on halloysite, kaolinite and bentonite and used for nitrate adsorption, which are significant for providing mechanism for the adsorption of anionic contaminants from waste water. XRD was used to characterize unmodified and surfactants modified clay minerals. Thermogravimetric analysis (TG) was used to determine the thermal stability and actual loading of surfactant molecules. Ion chromatography (IC) was used to determine changes of nitrate concentration before and after adsorption by these organoclays. These organoclays showed different removal capacities for anionic ions from water and adsorption mechanism was investigated.","downloadable_attachments":[{"id":46104420,"asset_id":12538036,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":31432495,"first_name":"Ravi","last_name":"Naidu","domain_name":"independent","page_name":"RaviNaidu5","display_name":"Ravi Naidu","profile_url":"https://independent.academia.edu/RaviNaidu5?f_ri=15372","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":48,"name":"Engineering","url":"https://www.academia.edu/Documents/in/Engineering?f_ri=15372","nofollow":true},{"id":400,"name":"Earth Sciences","url":"https://www.academia.edu/Documents/in/Earth_Sciences?f_ri=15372","nofollow":true},{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true},{"id":21728,"name":"Clay Minerals","url":"https://www.academia.edu/Documents/in/Clay_Minerals?f_ri=15372","nofollow":true},{"id":25600,"name":"Stability","url":"https://www.academia.edu/Documents/in/Stability?f_ri=15372"},{"id":39752,"name":"Adsorption","url":"https://www.academia.edu/Documents/in/Adsorption?f_ri=15372"},{"id":48127,"name":"Concentration","url":"https://www.academia.edu/Documents/in/Concentration?f_ri=15372"},{"id":348756,"name":"Ion","url":"https://www.academia.edu/Documents/in/Ion?f_ri=15372"},{"id":389180,"name":"Thermal Stability","url":"https://www.academia.edu/Documents/in/Thermal_Stability?f_ri=15372"},{"id":398652,"name":"Thermogravimetric Analysis","url":"https://www.academia.edu/Documents/in/Thermogravimetric_Analysis?f_ri=15372"},{"id":414914,"name":"Waste Water","url":"https://www.academia.edu/Documents/in/Waste_Water?f_ri=15372"},{"id":1257974,"name":"Ions","url":"https://www.academia.edu/Documents/in/Ions?f_ri=15372"},{"id":1263993,"name":"Anion","url":"https://www.academia.edu/Documents/in/Anion?f_ri=15372"},{"id":2036703,"name":"Applied Clay science","url":"https://www.academia.edu/Documents/in/Applied_Clay_science?f_ri=15372"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_31475499" data-work_id="31475499" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/31475499/Non_suppressed_ion_chromatography_of_cations_on_silica_gel_modified_with_aluminium">Non-suppressed ion chromatography of cations on silica gel modified with aluminium</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">The presence of aluminium in the silica matrix causes an enhancement of the acidity of the silanol group on silica gel. Therefore, in order to prepare silica-based cation-exchangers for ion chromatography (IC) under strongly acidic eluent... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_31475499" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">The presence of aluminium in the silica matrix causes an enhancement of the acidity of the silanol group on silica gel. Therefore, in order to prepare silica-based cation-exchangers for ion chromatography (IC) under strongly acidic eluent conditions, modification of silica gel with aluminium using a coating method was carried out. As a result, aluminiumadsorbing silica gels were found to act as a cation-exchangers under strongly acidic eluent conditions and were successfully applied to the conductimetric detection IC for the separation of common mono-and divalent cations using nitric acid-2,6-pyridinedicarboxylic acid eluent. These results strongly indicate that the modification is a simple and effective way for the preparation of advanced silica-based cation-exchangers for IC.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/31475499" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="bcaf9d0a5a1b169fc6f36f2fb9251af4" rel="nofollow" data-download="{"attachment_id":51828647,"asset_id":31475499,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/51828647/download_file?st=MTc0MDkzMDYzMSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="8006517" href="https://independent.academia.edu/KazuhikoTanaka">Kazuhiko Tanaka</a><script data-card-contents-for-user="8006517" type="text/json">{"id":8006517,"first_name":"Kazuhiko","last_name":"Tanaka","domain_name":"independent","page_name":"KazuhikoTanaka","display_name":"Kazuhiko Tanaka","profile_url":"https://independent.academia.edu/KazuhikoTanaka?f_ri=15372","photo":"https://0.academia-photos.com/8006517/2797577/3262232/s65_kazuhiko.tanaka.jpg"}</script></span></span></li><li class="js-paper-rank-work_31475499 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="31475499"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 31475499, container: ".js-paper-rank-work_31475499", }); 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Therefore, in order to prepare silica-based cation-exchangers for ion chromatography (IC) under strongly acidic eluent conditions, modification of silica gel with aluminium using a coating method was carried out. As a result, aluminiumadsorbing silica gels were found to act as a cation-exchangers under strongly acidic eluent conditions and were successfully applied to the conductimetric detection IC for the separation of common mono-and divalent cations using nitric acid-2,6-pyridinedicarboxylic acid eluent. These results strongly indicate that the modification is a simple and effective way for the preparation of advanced silica-based cation-exchangers for IC.","downloadable_attachments":[{"id":51828647,"asset_id":31475499,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":8006517,"first_name":"Kazuhiko","last_name":"Tanaka","domain_name":"independent","page_name":"KazuhikoTanaka","display_name":"Kazuhiko Tanaka","profile_url":"https://independent.academia.edu/KazuhikoTanaka?f_ri=15372","photo":"https://0.academia-photos.com/8006517/2797577/3262232/s65_kazuhiko.tanaka.jpg"}],"research_interests":[{"id":48,"name":"Engineering","url":"https://www.academia.edu/Documents/in/Engineering?f_ri=15372","nofollow":true},{"id":524,"name":"Analytical Chemistry","url":"https://www.academia.edu/Documents/in/Analytical_Chemistry?f_ri=15372","nofollow":true},{"id":923,"name":"Technology","url":"https://www.academia.edu/Documents/in/Technology?f_ri=15372","nofollow":true},{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true},{"id":260118,"name":"CHEMICAL SCIENCES","url":"https://www.academia.edu/Documents/in/CHEMICAL_SCIENCES?f_ri=15372"},{"id":1119031,"name":"Cation Exchange","url":"https://www.academia.edu/Documents/in/Cation_Exchange?f_ri=15372"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_15293520" data-work_id="15293520" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/15293520/Chloride_interference_in_the_determination_of_bromate_in_drinking_water_by_reagent_free_ion_chromatography_with_mass_spectrometry_detection">Chloride interference in the determination of bromate in drinking water by reagent free ion chromatography with mass spectrometry detection</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">Bromate, a well known by-product of the ozonation of drinking water, has been included among the substances which have to be monitored in the drinking water according to the last EC Directive 251/98 on potable water with a regulated limit... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_15293520" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">Bromate, a well known by-product of the ozonation of drinking water, has been included among the substances which have to be monitored in the drinking water according to the last EC Directive 251/98 on potable water with a regulated limit of 10 g l −1 . The need of performing routine analysis at this limit is a driving force for the developing of new simple and sensitive methods of detection, which should be also able to overcome the effect of matrix composition. This work explored the use of mass spectrometry detection with electrospray ionisation hyphenated to a reagent free ion chromatograph with hydroxide gradient elution for the determination of bromate in drinking water. The use of a high capacity hydroxide selective column operated in gradient mode allowed to avoid the interference by carbonate peak, which moved to longer retention times. The effect of increasing chloride concentrations from 0 to 250 mg l −1 , which is the guideline limit for drinking water in Directive 251/98/EC, was to decrease absolute mass spectrometric response and chromatographic efficiency and, on the consequence, to increase the effective detection limits. The effect of the chloride concentration on the detection of bromate is discussed.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/15293520" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="a3ce12dd79fd6d79f730bf7fee6e9b09" rel="nofollow" data-download="{"attachment_id":43362107,"asset_id":15293520,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/43362107/download_file?st=MTc0MDkzMDYzMSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="34387662" href="https://independent.academia.edu/SilvanoCavalli">Silvano Cavalli</a><script data-card-contents-for-user="34387662" type="text/json">{"id":34387662,"first_name":"Silvano","last_name":"Cavalli","domain_name":"independent","page_name":"SilvanoCavalli","display_name":"Silvano Cavalli","profile_url":"https://independent.academia.edu/SilvanoCavalli?f_ri=15372","photo":"/images/s65_no_pic.png"}</script></span></span></li><li class="js-paper-rank-work_15293520 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="15293520"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 15293520, container: ".js-paper-rank-work_15293520", }); 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The need of performing routine analysis at this limit is a driving force for the developing of new simple and sensitive methods of detection, which should be also able to overcome the effect of matrix composition. This work explored the use of mass spectrometry detection with electrospray ionisation hyphenated to a reagent free ion chromatograph with hydroxide gradient elution for the determination of bromate in drinking water. The use of a high capacity hydroxide selective column operated in gradient mode allowed to avoid the interference by carbonate peak, which moved to longer retention times. The effect of increasing chloride concentrations from 0 to 250 mg l −1 , which is the guideline limit for drinking water in Directive 251/98/EC, was to decrease absolute mass spectrometric response and chromatographic efficiency and, on the consequence, to increase the effective detection limits. The effect of the chloride concentration on the detection of bromate is discussed.","downloadable_attachments":[{"id":43362107,"asset_id":15293520,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":34387662,"first_name":"Silvano","last_name":"Cavalli","domain_name":"independent","page_name":"SilvanoCavalli","display_name":"Silvano Cavalli","profile_url":"https://independent.academia.edu/SilvanoCavalli?f_ri=15372","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":48,"name":"Engineering","url":"https://www.academia.edu/Documents/in/Engineering?f_ri=15372","nofollow":true},{"id":923,"name":"Technology","url":"https://www.academia.edu/Documents/in/Technology?f_ri=15372","nofollow":true},{"id":2215,"name":"Water","url":"https://www.academia.edu/Documents/in/Water?f_ri=15372","nofollow":true},{"id":5769,"name":"Mass Spectrometry","url":"https://www.academia.edu/Documents/in/Mass_Spectrometry?f_ri=15372","nofollow":true},{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372"},{"id":21724,"name":"Water Pollution","url":"https://www.academia.edu/Documents/in/Water_Pollution?f_ri=15372"},{"id":37434,"name":"Quantitative analysis","url":"https://www.academia.edu/Documents/in/Quantitative_analysis?f_ri=15372"},{"id":43465,"name":"Electrospray","url":"https://www.academia.edu/Documents/in/Electrospray?f_ri=15372"},{"id":64055,"name":"Water Supply","url":"https://www.academia.edu/Documents/in/Water_Supply?f_ri=15372"},{"id":69788,"name":"Drinking Water Treatment","url":"https://www.academia.edu/Documents/in/Drinking_Water_Treatment?f_ri=15372"},{"id":120641,"name":"Drinking Water","url":"https://www.academia.edu/Documents/in/Drinking_Water?f_ri=15372"},{"id":168891,"name":"Chemical Analysis","url":"https://www.academia.edu/Documents/in/Chemical_Analysis?f_ri=15372"},{"id":260118,"name":"CHEMICAL SCIENCES","url":"https://www.academia.edu/Documents/in/CHEMICAL_SCIENCES?f_ri=15372"},{"id":323652,"name":"Interference","url":"https://www.academia.edu/Documents/in/Interference?f_ri=15372"},{"id":380824,"name":"Ozone","url":"https://www.academia.edu/Documents/in/Ozone?f_ri=15372"},{"id":549280,"name":"Reproducibility of Results","url":"https://www.academia.edu/Documents/in/Reproducibility_of_Results?f_ri=15372"},{"id":641216,"name":"Quantitative Analysis","url":"https://www.academia.edu/Documents/in/Quantitative_Analysis-1?f_ri=15372"},{"id":875404,"name":"Retention Time","url":"https://www.academia.edu/Documents/in/Retention_Time?f_ri=15372"},{"id":1006086,"name":"Matrix Effect","url":"https://www.academia.edu/Documents/in/Matrix_Effect?f_ri=15372"},{"id":2260515,"name":"Chlorides","url":"https://www.academia.edu/Documents/in/Chlorides?f_ri=15372"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_20839254" data-work_id="20839254" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/20839254/Monitoring_the_Quality_of_Ultra_Pure_Water_in_the_Semiconductor_Industry_by_Online_Ion_Chromatography">Monitoring the Quality of Ultra-Pure Water in the Semiconductor Industry by Online Ion Chromatography</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">To manufacture 300 mm wafers, large quantities of ultra-pure water are required, which makes water the most important chemical used in this process. Therefore, its specification requiring ionic contaminants in the lower pg mL À1... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_20839254" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">To manufacture 300 mm wafers, large quantities of ultra-pure water are required, which makes water the most important chemical used in this process. Therefore, its specification requiring ionic contaminants in the lower pg mL À1 -concentration range is very strict. While inductively coupled plasma mass spectrometry (ICP-MS) is widely used for monitoring inorganic cations, ion chromatography (IC) is applied in the determination of ammonium and inorganic anions in the lower pg mL À1 range.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/20839254" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="b0c701c32a053af3b078c4c96468b686" rel="nofollow" data-download="{"attachment_id":41590833,"asset_id":20839254,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/41590833/download_file?st=MTc0MDkzMDYzMSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="42140049" href="https://independent.academia.edu/DetlefJensen">Detlef Jensen</a><script data-card-contents-for-user="42140049" type="text/json">{"id":42140049,"first_name":"Detlef","last_name":"Jensen","domain_name":"independent","page_name":"DetlefJensen","display_name":"Detlef Jensen","profile_url":"https://independent.academia.edu/DetlefJensen?f_ri=15372","photo":"/images/s65_no_pic.png"}</script></span></span></li><li class="js-paper-rank-work_20839254 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="20839254"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 20839254, container: ".js-paper-rank-work_20839254", }); 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Therefore, its specification requiring ionic contaminants in the lower pg mL À1 -concentration range is very strict. While inductively coupled plasma mass spectrometry (ICP-MS) is widely used for monitoring inorganic cations, ion chromatography (IC) is applied in the determination of ammonium and inorganic anions in the lower pg mL À1 range.","downloadable_attachments":[{"id":41590833,"asset_id":20839254,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":42140049,"first_name":"Detlef","last_name":"Jensen","domain_name":"independent","page_name":"DetlefJensen","display_name":"Detlef Jensen","profile_url":"https://independent.academia.edu/DetlefJensen?f_ri=15372","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":524,"name":"Analytical Chemistry","url":"https://www.academia.edu/Documents/in/Analytical_Chemistry?f_ri=15372","nofollow":true},{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true},{"id":222413,"name":"Inductively Coupled Plasma Mass Spectrometry","url":"https://www.academia.edu/Documents/in/Inductively_Coupled_Plasma_Mass_Spectrometry?f_ri=15372","nofollow":true},{"id":1272985,"name":"Simulation Software","url":"https://www.academia.edu/Documents/in/Simulation_Software?f_ri=15372","nofollow":true}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_22603035" data-work_id="22603035" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/22603035/Suppressed_electrostatic_ion_chromatography_with_tetraborate_as_eluent_and_its_application_to_the_determination_of_inorganic_anions_in_snow_and_rainwater">Suppressed electrostatic ion chromatography with tetraborate as eluent and its application to the determination of inorganic anions in snow and rainwater</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest">Tetraborate is investigated as the eluent ion for suppressed electrostatic ion chromatography (EIC) using a zwitterionic 22 2 2 2 2 2 2 4 3 2 Science B. V. All rights reserved.</div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/22603035" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="dad94ed1dba91975793bd1cf042104a9" rel="nofollow" data-download="{"attachment_id":43203763,"asset_id":22603035,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/43203763/download_file?st=MTc0MDkzMDYzMSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="44159958" href="https://independent.academia.edu/HaddadPaul">Paul Haddad</a><script data-card-contents-for-user="44159958" type="text/json">{"id":44159958,"first_name":"Paul","last_name":"Haddad","domain_name":"independent","page_name":"HaddadPaul","display_name":"Paul Haddad","profile_url":"https://independent.academia.edu/HaddadPaul?f_ri=15372","photo":"/images/s65_no_pic.png"}</script></span></span></li><li class="js-paper-rank-work_22603035 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="22603035"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 22603035, container: ".js-paper-rank-work_22603035", }); 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$(".js-view-count[data-work-id=22603035]").text(description); $(".js-view-count-work_22603035").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_22603035").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="22603035"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">13</a>  </div><span class="InlineList-item-text u-textTruncate u-pl10x"><a class="InlineList-item-text" data-has-card-for-ri="48" rel="nofollow" href="https://www.academia.edu/Documents/in/Engineering">Engineering</a>, <script data-card-contents-for-ri="48" type="text/json">{"id":48,"name":"Engineering","url":"https://www.academia.edu/Documents/in/Engineering?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="923" rel="nofollow" href="https://www.academia.edu/Documents/in/Technology">Technology</a>, <script data-card-contents-for-ri="923" type="text/json">{"id":923,"name":"Technology","url":"https://www.academia.edu/Documents/in/Technology?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="15372" rel="nofollow" href="https://www.academia.edu/Documents/in/Ion_Chromatography">Ion Chromatography</a>, <script data-card-contents-for-ri="15372" type="text/json">{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="90516" rel="nofollow" href="https://www.academia.edu/Documents/in/Borates">Borates</a><script data-card-contents-for-ri="90516" type="text/json">{"id":90516,"name":"Borates","url":"https://www.academia.edu/Documents/in/Borates?f_ri=15372","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=22603035]'), work: {"id":22603035,"title":"Suppressed electrostatic ion chromatography with tetraborate as eluent and its application to the determination of inorganic anions in snow and rainwater","created_at":"2016-02-29T08:11:02.285-08:00","url":"https://www.academia.edu/22603035/Suppressed_electrostatic_ion_chromatography_with_tetraborate_as_eluent_and_its_application_to_the_determination_of_inorganic_anions_in_snow_and_rainwater?f_ri=15372","dom_id":"work_22603035","summary":"Tetraborate is investigated as the eluent ion for suppressed electrostatic ion chromatography (EIC) using a zwitterionic 22 2 2 2 2 2 2 4 3 2 Science B. V. All rights reserved.","downloadable_attachments":[{"id":43203763,"asset_id":22603035,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":44159958,"first_name":"Paul","last_name":"Haddad","domain_name":"independent","page_name":"HaddadPaul","display_name":"Paul Haddad","profile_url":"https://independent.academia.edu/HaddadPaul?f_ri=15372","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":48,"name":"Engineering","url":"https://www.academia.edu/Documents/in/Engineering?f_ri=15372","nofollow":true},{"id":923,"name":"Technology","url":"https://www.academia.edu/Documents/in/Technology?f_ri=15372","nofollow":true},{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true},{"id":90516,"name":"Borates","url":"https://www.academia.edu/Documents/in/Borates?f_ri=15372","nofollow":true},{"id":184470,"name":"Rain","url":"https://www.academia.edu/Documents/in/Rain?f_ri=15372"},{"id":197149,"name":"SNOW","url":"https://www.academia.edu/Documents/in/SNOW?f_ri=15372"},{"id":246560,"name":"High Pressure Liquid Chromatography","url":"https://www.academia.edu/Documents/in/High_Pressure_Liquid_Chromatography?f_ri=15372"},{"id":260118,"name":"CHEMICAL SCIENCES","url":"https://www.academia.edu/Documents/in/CHEMICAL_SCIENCES?f_ri=15372"},{"id":263252,"name":"Anions","url":"https://www.academia.edu/Documents/in/Anions?f_ri=15372"},{"id":338011,"name":"Water Analysis","url":"https://www.academia.edu/Documents/in/Water_Analysis?f_ri=15372"},{"id":875404,"name":"Retention Time","url":"https://www.academia.edu/Documents/in/Retention_Time?f_ri=15372"},{"id":1373617,"name":"Electric Double Layer","url":"https://www.academia.edu/Documents/in/Electric_Double_Layer?f_ri=15372"},{"id":1451660,"name":"Static Electricity","url":"https://www.academia.edu/Documents/in/Static_Electricity?f_ri=15372"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_49330513" data-work_id="49330513" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/49330513/Coarse_and_fine_aerosol_source_apportionment_in_Rio_de_Janeiro_Brazil">Coarse and fine aerosol source apportionment in Rio de Janeiro, Brazil</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">The metropolitan area of Rio de Janeiro is one of the twenty biggest urban agglomerations in the world, with 11 million inhabitants in the metropolitan area, and has a high population density, with 1700 hab. km À2. For this aerosol source... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_49330513" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">The metropolitan area of Rio de Janeiro is one of the twenty biggest urban agglomerations in the world, with 11 million inhabitants in the metropolitan area, and has a high population density, with 1700 hab. km À2. For this aerosol source apportionment study, the atmospheric aerosol sampling was performed at ten sites distributed in different locations of the metropolitan area from September/2003 to December/2005, with sampling during 24 h on a weekly basis. Stacked filter units (SFU) were used to collect fine and coarse aerosol particles with a flow rate of 17 L min À1. In both size fractions trace elements were analyzed by Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) as well as watersoluble species by Ion-Chromatography (IC). Also gravimetric analysis and reflectance measurements provided aerosol mass and black carbon concentrations. Very good detection limits for up to 42 species were obtained. Mean annual PM 10 mass concentration ranged from 20 to 37 mg m À3 , values that are within the Brazilian air quality standards. Receptor models such as principal factor analysis, cluster analysis and absolute principal factor analysis were applied in order to identify and quantify the aerosol sources. For fine and coarse modes, circa of 100% of the measured mass was quantitatively apportioned to relatively few identified aerosol sources. A very similar and consistent source apportionment was obtained for both fine and coarse modes for all 10 sampling sites. Soil dust is an important component, accounting for 22-72% and for 25-48% of the coarse and fine mass respectively. On the other hand, anthropogenic sources as vehicle traffic and oil combustion represent a relatively high contribution (52-75%) of the fine aerosol mass. The joint use of ICP-MS and IC analysis of species in aerosols has proven to be reliable and feasible for the analysis of large amount of samples, and the coupling with receptor models provided an excellent method for quantitative aerosol source apportionment in large urban areas.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/49330513" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="2dbe0520281e0d29eb75a72093c6a892" rel="nofollow" data-download="{"attachment_id":67705643,"asset_id":49330513,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/67705643/download_file?st=MTc0MDkzMDYzMSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="37650011" href="https://independent.academia.edu/JoseGodoy8">Jose Godoy</a><script data-card-contents-for-user="37650011" type="text/json">{"id":37650011,"first_name":"Jose","last_name":"Godoy","domain_name":"independent","page_name":"JoseGodoy8","display_name":"Jose Godoy","profile_url":"https://independent.academia.edu/JoseGodoy8?f_ri=15372","photo":"/images/s65_no_pic.png"}</script></span></span></li><li class="js-paper-rank-work_49330513 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="49330513"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 49330513, container: ".js-paper-rank-work_49330513", }); });</script></li><li class="js-percentile-work_49330513 InlineList-item InlineList-item--bordered hidden u-tcGrayDark"><span class="percentile-widget hidden"><span class="u-mr2x percentile-widget" style="display: none">•</span><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 49330513; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-percentile-work_49330513"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></li><li class="js-view-count-work_49330513 InlineList-item InlineList-item--bordered hidden"><div><span><span class="js-view-count view-count u-mr2x" data-work-id="49330513"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 49330513; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=49330513]").text(description); $(".js-view-count-work_49330513").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_49330513").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="49330513"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">20</a>  </div><span class="InlineList-item-text u-textTruncate u-pl10x"><a class="InlineList-item-text" data-has-card-for-ri="55" rel="nofollow" href="https://www.academia.edu/Documents/in/Environmental_Engineering">Environmental Engineering</a>, <script data-card-contents-for-ri="55" type="text/json">{"id":55,"name":"Environmental Engineering","url":"https://www.academia.edu/Documents/in/Environmental_Engineering?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="402" rel="nofollow" href="https://www.academia.edu/Documents/in/Environmental_Science">Environmental Science</a>, <script data-card-contents-for-ri="402" type="text/json">{"id":402,"name":"Environmental Science","url":"https://www.academia.edu/Documents/in/Environmental_Science?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="896" rel="nofollow" href="https://www.academia.edu/Documents/in/Air_Quality">Air Quality</a>, <script data-card-contents-for-ri="896" type="text/json">{"id":896,"name":"Air Quality","url":"https://www.academia.edu/Documents/in/Air_Quality?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="8738" rel="nofollow" href="https://www.academia.edu/Documents/in/Atmospheric_Aerosols">Atmospheric Aerosols</a><script data-card-contents-for-ri="8738" type="text/json">{"id":8738,"name":"Atmospheric Aerosols","url":"https://www.academia.edu/Documents/in/Atmospheric_Aerosols?f_ri=15372","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=49330513]'), work: {"id":49330513,"title":"Coarse and fine aerosol source apportionment in Rio de Janeiro, Brazil","created_at":"2021-06-21T17:41:59.342-07:00","url":"https://www.academia.edu/49330513/Coarse_and_fine_aerosol_source_apportionment_in_Rio_de_Janeiro_Brazil?f_ri=15372","dom_id":"work_49330513","summary":"The metropolitan area of Rio de Janeiro is one of the twenty biggest urban agglomerations in the world, with 11 million inhabitants in the metropolitan area, and has a high population density, with 1700 hab. km À2. For this aerosol source apportionment study, the atmospheric aerosol sampling was performed at ten sites distributed in different locations of the metropolitan area from September/2003 to December/2005, with sampling during 24 h on a weekly basis. Stacked filter units (SFU) were used to collect fine and coarse aerosol particles with a flow rate of 17 L min À1. In both size fractions trace elements were analyzed by Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) as well as watersoluble species by Ion-Chromatography (IC). Also gravimetric analysis and reflectance measurements provided aerosol mass and black carbon concentrations. Very good detection limits for up to 42 species were obtained. Mean annual PM 10 mass concentration ranged from 20 to 37 mg m À3 , values that are within the Brazilian air quality standards. Receptor models such as principal factor analysis, cluster analysis and absolute principal factor analysis were applied in order to identify and quantify the aerosol sources. For fine and coarse modes, circa of 100% of the measured mass was quantitatively apportioned to relatively few identified aerosol sources. A very similar and consistent source apportionment was obtained for both fine and coarse modes for all 10 sampling sites. Soil dust is an important component, accounting for 22-72% and for 25-48% of the coarse and fine mass respectively. On the other hand, anthropogenic sources as vehicle traffic and oil combustion represent a relatively high contribution (52-75%) of the fine aerosol mass. The joint use of ICP-MS and IC analysis of species in aerosols has proven to be reliable and feasible for the analysis of large amount of samples, and the coupling with receptor models provided an excellent method for quantitative aerosol source apportionment in large urban areas.","downloadable_attachments":[{"id":67705643,"asset_id":49330513,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":37650011,"first_name":"Jose","last_name":"Godoy","domain_name":"independent","page_name":"JoseGodoy8","display_name":"Jose Godoy","profile_url":"https://independent.academia.edu/JoseGodoy8?f_ri=15372","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":55,"name":"Environmental Engineering","url":"https://www.academia.edu/Documents/in/Environmental_Engineering?f_ri=15372","nofollow":true},{"id":402,"name":"Environmental Science","url":"https://www.academia.edu/Documents/in/Environmental_Science?f_ri=15372","nofollow":true},{"id":896,"name":"Air Quality","url":"https://www.academia.edu/Documents/in/Air_Quality?f_ri=15372","nofollow":true},{"id":8738,"name":"Atmospheric Aerosols","url":"https://www.academia.edu/Documents/in/Atmospheric_Aerosols?f_ri=15372","nofollow":true},{"id":11976,"name":"Air pollution","url":"https://www.academia.edu/Documents/in/Air_pollution?f_ri=15372"},{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372"},{"id":60285,"name":"Atmospheric sciences","url":"https://www.academia.edu/Documents/in/Atmospheric_sciences?f_ri=15372"},{"id":60585,"name":"Factor analysis","url":"https://www.academia.edu/Documents/in/Factor_analysis?f_ri=15372"},{"id":104217,"name":"Rio de Janeiro","url":"https://www.academia.edu/Documents/in/Rio_de_Janeiro?f_ri=15372"},{"id":131237,"name":"Cluster Analysis","url":"https://www.academia.edu/Documents/in/Cluster_Analysis?f_ri=15372"},{"id":162645,"name":"Population Density","url":"https://www.academia.edu/Documents/in/Population_Density?f_ri=15372"},{"id":222413,"name":"Inductively Coupled Plasma Mass Spectrometry","url":"https://www.academia.edu/Documents/in/Inductively_Coupled_Plasma_Mass_Spectrometry?f_ri=15372"},{"id":365801,"name":"Source apportionment","url":"https://www.academia.edu/Documents/in/Source_apportionment?f_ri=15372"},{"id":445081,"name":"Reflectance","url":"https://www.academia.edu/Documents/in/Reflectance?f_ri=15372"},{"id":709300,"name":"Trace element","url":"https://www.academia.edu/Documents/in/Trace_element?f_ri=15372"},{"id":788163,"name":"Black Carbon","url":"https://www.academia.edu/Documents/in/Black_Carbon?f_ri=15372"},{"id":898062,"name":"Flow Rate","url":"https://www.academia.edu/Documents/in/Flow_Rate?f_ri=15372"},{"id":1664651,"name":"Gravimetric Analysis","url":"https://www.academia.edu/Documents/in/Gravimetric_Analysis?f_ri=15372"},{"id":1984794,"name":"Urban Area","url":"https://www.academia.edu/Documents/in/Urban_Area?f_ri=15372"},{"id":2803818,"name":"Atmospheric Environment","url":"https://www.academia.edu/Documents/in/Atmospheric_Environment?f_ri=15372"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_24266813 coauthored" data-work_id="24266813" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/24266813/Monitoring_of_trace_chloride_ions_at_different_stages_of_the_gas_production_process">Monitoring of trace chloride ions at different stages of the gas production process</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">Fifty gas and liquid samples at different stages of Obaiyed gas plant in Egypt were selected and subjected for determining chloride ion and hydrocarbon compositions. The trace levels of chloride in the water extracted from natural gas,... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_24266813" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">Fifty gas and liquid samples at different stages of Obaiyed gas plant in Egypt were selected and subjected for determining chloride ion and hydrocarbon compositions. The trace levels of chloride in the water extracted from natural gas, condensate, Benfield and glycol samples were achieved using ion chromatograph (IC), electrical, conductivity and potentiometric methods, respectively. The hydrocarbon compositions were analyzed and evaluated using capillary gas chromatography. The chloride ions in natural gas and condensate are a function of water content and their concentration mainly depends on the separation efficiency. Variability in natural gas and condensate compositions seasonally is not an uncommon occurrence. Our aim is monitoring of chloride ion to select and optimize the conditions of sweetening and dehydration regenerators in order to follow and prevent their gradient in gas plant.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/24266813" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="1db62f43068791daded0486457f716fc" rel="nofollow" data-download="{"attachment_id":44603010,"asset_id":24266813,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/44603010/download_file?st=MTc0MDkzMDYzMSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="46770571" href="https://independent.academia.edu/YMoustafa1">Y. Moustafa</a><script data-card-contents-for-user="46770571" type="text/json">{"id":46770571,"first_name":"Y.","last_name":"Moustafa","domain_name":"independent","page_name":"YMoustafa1","display_name":"Y. Moustafa","profile_url":"https://independent.academia.edu/YMoustafa1?f_ri=15372","photo":"/images/s65_no_pic.png"}</script></span></span><span class="u-displayInlineBlock InlineList-item-text"> and <span class="u-textDecorationUnderline u-clickable InlineList-item-text js-work-more-authors-24266813">+1</span><div class="hidden js-additional-users-24266813"><div><span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a href="https://independent.academia.edu/EAbdulah">E. Abdulah</a></span></div></div></span><script>(function(){ var popoverSettings = { el: $('.js-work-more-authors-24266813'), placement: 'bottom', hide_delay: 200, html: true, content: function(){ return $('.js-additional-users-24266813').html(); } } new HoverPopover(popoverSettings); })();</script></li><li class="js-paper-rank-work_24266813 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="24266813"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 24266813, container: ".js-paper-rank-work_24266813", }); });</script></li><li class="js-percentile-work_24266813 InlineList-item InlineList-item--bordered hidden u-tcGrayDark"><span class="percentile-widget hidden"><span class="u-mr2x percentile-widget" style="display: none">•</span><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 24266813; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-percentile-work_24266813"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></li><li class="js-view-count-work_24266813 InlineList-item InlineList-item--bordered hidden"><div><span><span class="js-view-count view-count u-mr2x" data-work-id="24266813"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 24266813; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=24266813]").text(description); $(".js-view-count-work_24266813").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_24266813").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="24266813"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">6</a>  </div><span class="InlineList-item-text u-textTruncate u-pl9x"><a class="InlineList-item-text" data-has-card-for-ri="15372" rel="nofollow" href="https://www.academia.edu/Documents/in/Ion_Chromatography">Ion Chromatography</a>, <script data-card-contents-for-ri="15372" type="text/json">{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="57433" rel="nofollow" href="https://www.academia.edu/Documents/in/Seasonality">Seasonality</a>, <script data-card-contents-for-ri="57433" type="text/json">{"id":57433,"name":"Seasonality","url":"https://www.academia.edu/Documents/in/Seasonality?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="59128" rel="nofollow" href="https://www.academia.edu/Documents/in/Natural_Gas">Natural Gas</a>, <script data-card-contents-for-ri="59128" type="text/json">{"id":59128,"name":"Natural Gas","url":"https://www.academia.edu/Documents/in/Natural_Gas?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="845678" rel="nofollow" href="https://www.academia.edu/Documents/in/Water_Content">Water Content</a><script data-card-contents-for-ri="845678" type="text/json">{"id":845678,"name":"Water Content","url":"https://www.academia.edu/Documents/in/Water_Content?f_ri=15372","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=24266813]'), work: {"id":24266813,"title":"Monitoring of trace chloride ions at different stages of the gas production process","created_at":"2016-04-10T14:33:47.134-07:00","url":"https://www.academia.edu/24266813/Monitoring_of_trace_chloride_ions_at_different_stages_of_the_gas_production_process?f_ri=15372","dom_id":"work_24266813","summary":"Fifty gas and liquid samples at different stages of Obaiyed gas plant in Egypt were selected and subjected for determining chloride ion and hydrocarbon compositions. The trace levels of chloride in the water extracted from natural gas, condensate, Benfield and glycol samples were achieved using ion chromatograph (IC), electrical, conductivity and potentiometric methods, respectively. The hydrocarbon compositions were analyzed and evaluated using capillary gas chromatography. The chloride ions in natural gas and condensate are a function of water content and their concentration mainly depends on the separation efficiency. Variability in natural gas and condensate compositions seasonally is not an uncommon occurrence. Our aim is monitoring of chloride ion to select and optimize the conditions of sweetening and dehydration regenerators in order to follow and prevent their gradient in gas plant.","downloadable_attachments":[{"id":44603010,"asset_id":24266813,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":46770571,"first_name":"Y.","last_name":"Moustafa","domain_name":"independent","page_name":"YMoustafa1","display_name":"Y. Moustafa","profile_url":"https://independent.academia.edu/YMoustafa1?f_ri=15372","photo":"/images/s65_no_pic.png"},{"id":47779688,"first_name":"E.","last_name":"Abdulah","domain_name":"independent","page_name":"EAbdulah","display_name":"E. Abdulah","profile_url":"https://independent.academia.edu/EAbdulah?f_ri=15372","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true},{"id":57433,"name":"Seasonality","url":"https://www.academia.edu/Documents/in/Seasonality?f_ri=15372","nofollow":true},{"id":59128,"name":"Natural Gas","url":"https://www.academia.edu/Documents/in/Natural_Gas?f_ri=15372","nofollow":true},{"id":845678,"name":"Water Content","url":"https://www.academia.edu/Documents/in/Water_Content?f_ri=15372","nofollow":true},{"id":970682,"name":"Oil and Gas Production","url":"https://www.academia.edu/Documents/in/Oil_and_Gas_Production?f_ri=15372"},{"id":1202042,"name":"Electric Conductivity","url":"https://www.academia.edu/Documents/in/Electric_Conductivity?f_ri=15372"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_2351631" data-work_id="2351631" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/2351631/Quantification_of_selected_volatile_constituents_and_anions_in_Mexican_Agave_spirits_Tequila_Mezcal_Sotol_Bacanora_">Quantification of selected volatile constituents and anions in Mexican Agave spirits (Tequila, Mezcal, Sotol, Bacanora)</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">A large collection (n ) 95) of Mexican Agave spirits with protected appellations of origin (Tequila, Mezcal, Sotol, and Bacanora) was analyzed using ion and gas chromatography. Because of their production from oxalate-containing plant... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_2351631" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">A large collection (n ) 95) of Mexican Agave spirits with protected appellations of origin (Tequila, Mezcal, Sotol, and Bacanora) was analyzed using ion and gas chromatography. Because of their production from oxalate-containing plant material, all Agave spirits contained significant concentrations of oxalate (0.1-9.7 mg/L). The two Tequila categories ("100% Agave" and "mixed") showed differences in the methanol, 2-/3-methyl-1-butanol, and 2-phenylethanol concentrations with lower concentrations in the mixed category. Mezcal showed no significant differences in any of the evaluated parameters that would allow a classification. Sotol showed higher nitrate concentrations and lower 2-/3-methyl-1-butanol concentrations. Bacanora was characterized by exceptionally high acetaldehyde concentrations and a relatively low ethyl lactate content. The methanol content was the most problematic compound regarding the Mexican standards: two Tequilas (4%), five Sotols (31%), and six Bacanoras (46%) had levels above the maximum methanol content of 300 g/hL of alcohol. In conclusion, the composition of Mexican Agave spirits was found to vary over a relatively large range.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/2351631" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="7be344f7fa005fa0a3d2a3909ce5e375" rel="nofollow" data-download="{"attachment_id":30392543,"asset_id":2351631,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/30392543/download_file?st=MTc0MDkzMDYzMSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="3007499" href="https://independent.academia.edu/PedroJim%C3%A9nezGurr%C3%ADa">Pedro Jiménez Gurría</a><script data-card-contents-for-user="3007499" type="text/json">{"id":3007499,"first_name":"Pedro","last_name":"Jiménez Gurría","domain_name":"independent","page_name":"PedroJiménezGurría","display_name":"Pedro Jiménez Gurría","profile_url":"https://independent.academia.edu/PedroJim%C3%A9nezGurr%C3%ADa?f_ri=15372","photo":"https://0.academia-photos.com/3007499/991781/1240800/s65_pedro.jim_nez_gurr_a.jpg"}</script></span></span></li><li class="js-paper-rank-work_2351631 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="2351631"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 2351631, container: ".js-paper-rank-work_2351631", }); 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$(".js-view-count[data-work-id=2351631]").text(description); $(".js-view-count-work_2351631").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_2351631").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="2351631"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">19</a>  </div><span class="InlineList-item-text u-textTruncate u-pl10x"><a class="InlineList-item-text" data-has-card-for-ri="48" rel="nofollow" href="https://www.academia.edu/Documents/in/Engineering">Engineering</a>, <script data-card-contents-for-ri="48" type="text/json">{"id":48,"name":"Engineering","url":"https://www.academia.edu/Documents/in/Engineering?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="4656" rel="nofollow" href="https://www.academia.edu/Documents/in/Chromatography">Chromatography</a>, <script data-card-contents-for-ri="4656" type="text/json">{"id":4656,"name":"Chromatography","url":"https://www.academia.edu/Documents/in/Chromatography?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="15372" rel="nofollow" href="https://www.academia.edu/Documents/in/Ion_Chromatography">Ion Chromatography</a>, <script data-card-contents-for-ri="15372" type="text/json">{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="37434" rel="nofollow" href="https://www.academia.edu/Documents/in/Quantitative_analysis">Quantitative analysis</a><script data-card-contents-for-ri="37434" type="text/json">{"id":37434,"name":"Quantitative analysis","url":"https://www.academia.edu/Documents/in/Quantitative_analysis?f_ri=15372","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=2351631]'), work: {"id":2351631,"title":"Quantification of selected volatile constituents and anions in Mexican Agave spirits (Tequila, Mezcal, Sotol, Bacanora)","created_at":"2013-01-02T08:11:46.029-08:00","url":"https://www.academia.edu/2351631/Quantification_of_selected_volatile_constituents_and_anions_in_Mexican_Agave_spirits_Tequila_Mezcal_Sotol_Bacanora_?f_ri=15372","dom_id":"work_2351631","summary":"A large collection (n ) 95) of Mexican Agave spirits with protected appellations of origin (Tequila, Mezcal, Sotol, and Bacanora) was analyzed using ion and gas chromatography. Because of their production from oxalate-containing plant material, all Agave spirits contained significant concentrations of oxalate (0.1-9.7 mg/L). The two Tequila categories (\"100% Agave\" and \"mixed\") showed differences in the methanol, 2-/3-methyl-1-butanol, and 2-phenylethanol concentrations with lower concentrations in the mixed category. Mezcal showed no significant differences in any of the evaluated parameters that would allow a classification. Sotol showed higher nitrate concentrations and lower 2-/3-methyl-1-butanol concentrations. Bacanora was characterized by exceptionally high acetaldehyde concentrations and a relatively low ethyl lactate content. The methanol content was the most problematic compound regarding the Mexican standards: two Tequilas (4%), five Sotols (31%), and six Bacanoras (46%) had levels above the maximum methanol content of 300 g/hL of alcohol. In conclusion, the composition of Mexican Agave spirits was found to vary over a relatively large range.","downloadable_attachments":[{"id":30392543,"asset_id":2351631,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":3007499,"first_name":"Pedro","last_name":"Jiménez Gurría","domain_name":"independent","page_name":"PedroJiménezGurría","display_name":"Pedro Jiménez Gurría","profile_url":"https://independent.academia.edu/PedroJim%C3%A9nezGurr%C3%ADa?f_ri=15372","photo":"https://0.academia-photos.com/3007499/991781/1240800/s65_pedro.jim_nez_gurr_a.jpg"}],"research_interests":[{"id":48,"name":"Engineering","url":"https://www.academia.edu/Documents/in/Engineering?f_ri=15372","nofollow":true},{"id":4656,"name":"Chromatography","url":"https://www.academia.edu/Documents/in/Chromatography?f_ri=15372","nofollow":true},{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true},{"id":37434,"name":"Quantitative analysis","url":"https://www.academia.edu/Documents/in/Quantitative_analysis?f_ri=15372","nofollow":true},{"id":43881,"name":"Mexico","url":"https://www.academia.edu/Documents/in/Mexico?f_ri=15372"},{"id":112334,"name":"Methanol","url":"https://www.academia.edu/Documents/in/Methanol?f_ri=15372"},{"id":149500,"name":"Agave","url":"https://www.academia.edu/Documents/in/Agave?f_ri=15372"},{"id":166448,"name":"Gas Chromatography","url":"https://www.academia.edu/Documents/in/Gas_Chromatography?f_ri=15372"},{"id":222040,"name":"Tequila","url":"https://www.academia.edu/Documents/in/Tequila?f_ri=15372"},{"id":231318,"name":"Agricultural","url":"https://www.academia.edu/Documents/in/Agricultural?f_ri=15372"},{"id":260118,"name":"CHEMICAL SCIENCES","url":"https://www.academia.edu/Documents/in/CHEMICAL_SCIENCES?f_ri=15372"},{"id":263252,"name":"Anions","url":"https://www.academia.edu/Documents/in/Anions?f_ri=15372"},{"id":352756,"name":"Oxalates","url":"https://www.academia.edu/Documents/in/Oxalates?f_ri=15372"},{"id":437920,"name":"Alcoholic Beverages","url":"https://www.academia.edu/Documents/in/Alcoholic_Beverages?f_ri=15372"},{"id":596974,"name":"Agricultural and Food Chemistry","url":"https://www.academia.edu/Documents/in/Agricultural_and_Food_Chemistry?f_ri=15372"},{"id":617771,"name":"MEXICO","url":"https://www.academia.edu/Documents/in/MEXICO-2015?f_ri=15372"},{"id":641216,"name":"Quantitative Analysis","url":"https://www.academia.edu/Documents/in/Quantitative_Analysis-1?f_ri=15372"},{"id":1263993,"name":"Anion","url":"https://www.academia.edu/Documents/in/Anion?f_ri=15372"},{"id":1854642,"name":"Volatilization","url":"https://www.academia.edu/Documents/in/Volatilization?f_ri=15372"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_69990182" data-work_id="69990182" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/69990182/Indoor_Air_Quality_Assessment_of_Elementary_Schools_in_Curitiba_Brazil">Indoor Air Quality Assessment of Elementary Schools in Curitiba, Brazil</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">The promotion of good indoor air quality in schools is of particular public concern for two main reasons: (1) school-age children spend at least 30% of their time inside classrooms and (2) indoor air quality in urban areas is... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_69990182" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">The promotion of good indoor air quality in schools is of particular public concern for two main reasons: (1) school-age children spend at least 30% of their time inside classrooms and (2) indoor air quality in urban areas is substantially influenced by the outdoor pollutants, exposing tenants to potentially toxic substances. Two schools in Curitiba, Brazil, were selected to characterize the gaseous compounds indoor and outdoor of the classrooms. The concentrations of benzene, toluene, ethylbenzene, and the isomers xylenes (BTEX); NO2; SO2; O3; acetic acid (HAc); and formic acid (HFor) were assessed using passive diffusion tubes. BTEX were analyzed by gas chromatography–ion trap mass spectrometry and other collected gasses by ion chromatography. The concentration of NO2 varied between 9.5 and 23 µg m−3, whereas SO2 showed an interval from 0.1 to 4.8 µg m−3. Within the schools, BTEX concentrations were predominant. Formic and acetic acids inside the classrooms revealed intermediate c...</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/69990182" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="400f79c71fe4d52d9ad99a17ec17eb91" rel="nofollow" data-download="{"attachment_id":79883489,"asset_id":69990182,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/79883489/download_file?st=MTc0MDkzMDYzMSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="161058685" href="https://independent.academia.edu/GodoiAnaLaura">Ana Laura Godoi</a><script data-card-contents-for-user="161058685" type="text/json">{"id":161058685,"first_name":"Ana Laura","last_name":"Godoi","domain_name":"independent","page_name":"GodoiAnaLaura","display_name":"Ana Laura Godoi","profile_url":"https://independent.academia.edu/GodoiAnaLaura?f_ri=15372","photo":"/images/s65_no_pic.png"}</script></span></span></li><li class="js-paper-rank-work_69990182 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="69990182"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 69990182, container: ".js-paper-rank-work_69990182", }); });</script></li><li class="js-percentile-work_69990182 InlineList-item InlineList-item--bordered hidden u-tcGrayDark"><span class="percentile-widget hidden"><span class="u-mr2x percentile-widget" style="display: none">•</span><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 69990182; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-percentile-work_69990182"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></li><li class="js-view-count-work_69990182 InlineList-item InlineList-item--bordered hidden"><div><span><span class="js-view-count view-count u-mr2x" data-work-id="69990182"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 69990182; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=69990182]").text(description); $(".js-view-count-work_69990182").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_69990182").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="69990182"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">10</a>  </div><span class="InlineList-item-text u-textTruncate u-pl10x"><a class="InlineList-item-text" data-has-card-for-ri="523" rel="nofollow" href="https://www.academia.edu/Documents/in/Chemistry">Chemistry</a>, <script data-card-contents-for-ri="523" type="text/json">{"id":523,"name":"Chemistry","url":"https://www.academia.edu/Documents/in/Chemistry?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="4592" rel="nofollow" href="https://www.academia.edu/Documents/in/Indoor_Air_Quality">Indoor Air Quality</a>, <script data-card-contents-for-ri="4592" type="text/json">{"id":4592,"name":"Indoor Air Quality","url":"https://www.academia.edu/Documents/in/Indoor_Air_Quality?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="5769" rel="nofollow" href="https://www.academia.edu/Documents/in/Mass_Spectrometry">Mass Spectrometry</a>, <script data-card-contents-for-ri="5769" type="text/json">{"id":5769,"name":"Mass Spectrometry","url":"https://www.academia.edu/Documents/in/Mass_Spectrometry?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="15372" rel="nofollow" href="https://www.academia.edu/Documents/in/Ion_Chromatography">Ion Chromatography</a><script data-card-contents-for-ri="15372" type="text/json">{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=69990182]'), work: {"id":69990182,"title":"Indoor Air Quality Assessment of Elementary Schools in Curitiba, Brazil","created_at":"2022-01-29T20:17:58.795-08:00","url":"https://www.academia.edu/69990182/Indoor_Air_Quality_Assessment_of_Elementary_Schools_in_Curitiba_Brazil?f_ri=15372","dom_id":"work_69990182","summary":"The promotion of good indoor air quality in schools is of particular public concern for two main reasons: (1) school-age children spend at least 30% of their time inside classrooms and (2) indoor air quality in urban areas is substantially influenced by the outdoor pollutants, exposing tenants to potentially toxic substances. Two schools in Curitiba, Brazil, were selected to characterize the gaseous compounds indoor and outdoor of the classrooms. The concentrations of benzene, toluene, ethylbenzene, and the isomers xylenes (BTEX); NO2; SO2; O3; acetic acid (HAc); and formic acid (HFor) were assessed using passive diffusion tubes. BTEX were analyzed by gas chromatography–ion trap mass spectrometry and other collected gasses by ion chromatography. The concentration of NO2 varied between 9.5 and 23 µg m−3, whereas SO2 showed an interval from 0.1 to 4.8 µg m−3. Within the schools, BTEX concentrations were predominant. Formic and acetic acids inside the classrooms revealed intermediate c...","downloadable_attachments":[{"id":79883489,"asset_id":69990182,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":161058685,"first_name":"Ana Laura","last_name":"Godoi","domain_name":"independent","page_name":"GodoiAnaLaura","display_name":"Ana Laura Godoi","profile_url":"https://independent.academia.edu/GodoiAnaLaura?f_ri=15372","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":523,"name":"Chemistry","url":"https://www.academia.edu/Documents/in/Chemistry?f_ri=15372","nofollow":true},{"id":4592,"name":"Indoor Air Quality","url":"https://www.academia.edu/Documents/in/Indoor_Air_Quality?f_ri=15372","nofollow":true},{"id":5769,"name":"Mass Spectrometry","url":"https://www.academia.edu/Documents/in/Mass_Spectrometry?f_ri=15372","nofollow":true},{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true},{"id":28235,"name":"Multidisciplinary","url":"https://www.academia.edu/Documents/in/Multidisciplinary?f_ri=15372"},{"id":112879,"name":"Elementary School","url":"https://www.academia.edu/Documents/in/Elementary_School?f_ri=15372"},{"id":166448,"name":"Gas Chromatography","url":"https://www.academia.edu/Documents/in/Gas_Chromatography?f_ri=15372"},{"id":396848,"name":"Formic Acid","url":"https://www.academia.edu/Documents/in/Formic_Acid?f_ri=15372"},{"id":723149,"name":"Acetic Acid","url":"https://www.academia.edu/Documents/in/Acetic_Acid?f_ri=15372"},{"id":1984794,"name":"Urban Area","url":"https://www.academia.edu/Documents/in/Urban_Area?f_ri=15372"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_13864467" data-work_id="13864467" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/13864467/Effect_of_eluent_composition_and_pH_and_chemiluminescent_reagent_pH_on_ion_chromatographic_selectivity_and_luminol_based_chemiluminescence_detection_of_Co2_Mn2_and_Fe2_at_trace_levels">Effect of eluent composition and pH and chemiluminescent reagent pH on ion chromatographic selectivity and luminol-based chemiluminescence detection of Co2+, Mn2+ and Fe2+ at trace levels</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">The alkaline-luminol/H 2 O 2 -based chemiluminescent (CL) detection of Fe 2+ , Co 2+ , and Mn 2+ , separated with a Dionex CS5A ion chromatographic phase was studied by means of a multi-pump flow system allowing the variation of the... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_13864467" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">The alkaline-luminol/H 2 O 2 -based chemiluminescent (CL) detection of Fe 2+ , Co 2+ , and Mn 2+ , separated with a Dionex CS5A ion chromatographic phase was studied by means of a multi-pump flow system allowing the variation of the post-column solution composition. A perchlorate gradient at pH 1.9 (with HCl) was used to separate cations partially complexed with 5.6 mM oxalate present in the eluent and necessary for the chosen separation phase. A 0.91 mM luminol, 3.3 mM H 2 O 2 in 0.25 M carbonate buffer at pH 10.5 composition was chosen as CL reagent solution. The chosen pH value warrants signal repeatability and wider linearity range although absolute signal is not maximum. The CL signal was related to the pH of the two post-column mixing solutions. Calibration plots of Co 2+ and Fe 2+ were linear in the chosen concentration range whilst a parabolic model was the best fit for Mn 2+ . Detection limits were 0.24, 0.50 and 375 nM for Co 2+ , Fe 2+ and Mn 2+ , respectively. The method was used to determine Co 2+ at trace level in commercial copper chelates used for animal feeding. A comparison with a chromatographic method with spectrophotometric detection was made giving results comparable both in absolute values and accuracy.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/13864467" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="88f04b8d4e48c66863e2944af253c2d3" rel="nofollow" data-download="{"attachment_id":44865014,"asset_id":13864467,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/44865014/download_file?st=MTc0MDkzMDYzMSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="32952207" href="https://unipd.academia.edu/PaoloPastore">Paolo Pastore</a><script data-card-contents-for-user="32952207" type="text/json">{"id":32952207,"first_name":"Paolo","last_name":"Pastore","domain_name":"unipd","page_name":"PaoloPastore","display_name":"Paolo Pastore","profile_url":"https://unipd.academia.edu/PaoloPastore?f_ri=15372","photo":"/images/s65_no_pic.png"}</script></span></span></li><li class="js-paper-rank-work_13864467 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="13864467"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 13864467, container: ".js-paper-rank-work_13864467", }); 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A perchlorate gradient at pH 1.9 (with HCl) was used to separate cations partially complexed with 5.6 mM oxalate present in the eluent and necessary for the chosen separation phase. A 0.91 mM luminol, 3.3 mM H 2 O 2 in 0.25 M carbonate buffer at pH 10.5 composition was chosen as CL reagent solution. The chosen pH value warrants signal repeatability and wider linearity range although absolute signal is not maximum. The CL signal was related to the pH of the two post-column mixing solutions. Calibration plots of Co 2+ and Fe 2+ were linear in the chosen concentration range whilst a parabolic model was the best fit for Mn 2+ . Detection limits were 0.24, 0.50 and 375 nM for Co 2+ , Fe 2+ and Mn 2+ , respectively. The method was used to determine Co 2+ at trace level in commercial copper chelates used for animal feeding. A comparison with a chromatographic method with spectrophotometric detection was made giving results comparable both in absolute values and accuracy.","downloadable_attachments":[{"id":44865014,"asset_id":13864467,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":32952207,"first_name":"Paolo","last_name":"Pastore","domain_name":"unipd","page_name":"PaoloPastore","display_name":"Paolo Pastore","profile_url":"https://unipd.academia.edu/PaoloPastore?f_ri=15372","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":524,"name":"Analytical Chemistry","url":"https://www.academia.edu/Documents/in/Analytical_Chemistry?f_ri=15372","nofollow":true},{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true},{"id":55764,"name":"Transition-Metal Oxides","url":"https://www.academia.edu/Documents/in/Transition-Metal_Oxides?f_ri=15372","nofollow":true},{"id":80692,"name":"Copper","url":"https://www.academia.edu/Documents/in/Copper?f_ri=15372","nofollow":true}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_18568062" data-work_id="18568062" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/18568062/Analysis_of_carbohydrates_in_plants_by_high_performance_anion_exchange_chromatography_coupled_with_electrospray_mass_spectrometry">Analysis of carbohydrates in plants by high-performance anion-exchange chromatography coupled with electrospray mass spectrometry</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">A mass spectrometer was coupled to high-performance anion-exchange chromatography (HPAEC) with the help of electrochemical neutralization of the eluent and post-column addition of lithium chloride for carbohydrate analysis. Parallel... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_18568062" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">A mass spectrometer was coupled to high-performance anion-exchange chromatography (HPAEC) with the help of electrochemical neutralization of the eluent and post-column addition of lithium chloride for carbohydrate analysis. Parallel selective channels (single ion monitoring) were used to decrease the detection limits and separate unresolved peaks. The mass specific detection allowed the simultaneous analysis of a wide range of sugar alcohols, mono-, di-and oligosaccharides. Carbohydrates extracted from leaves of poplar submitted to drought stress were analyzed using pulsed amperometric detection (PAD), then mass spectrometry. It allowed the confirmation of peak attribution and the identification of salicin as a major compound in the extracts. Different responses to water deficit and re-hydration were obtained for several carbohydrates, suggesting different roles in osmoprotection processes.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/18568062" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="93520674ad9b7be2eceb81a7228e2763" rel="nofollow" data-download="{"attachment_id":40132792,"asset_id":18568062,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/40132792/download_file?st=MTc0MDkzMDYzMSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="38513004" href="https://liscitech.academia.edu/JeanfrancoisHausman">Jean-francois Hausman</a><script data-card-contents-for-user="38513004" type="text/json">{"id":38513004,"first_name":"Jean-francois","last_name":"Hausman","domain_name":"liscitech","page_name":"JeanfrancoisHausman","display_name":"Jean-francois Hausman","profile_url":"https://liscitech.academia.edu/JeanfrancoisHausman?f_ri=15372","photo":"/images/s65_no_pic.png"}</script></span></span></li><li class="js-paper-rank-work_18568062 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="18568062"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 18568062, container: ".js-paper-rank-work_18568062", }); 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Parallel selective channels (single ion monitoring) were used to decrease the detection limits and separate unresolved peaks. The mass specific detection allowed the simultaneous analysis of a wide range of sugar alcohols, mono-, di-and oligosaccharides. Carbohydrates extracted from leaves of poplar submitted to drought stress were analyzed using pulsed amperometric detection (PAD), then mass spectrometry. It allowed the confirmation of peak attribution and the identification of salicin as a major compound in the extracts. Different responses to water deficit and re-hydration were obtained for several carbohydrates, suggesting different roles in osmoprotection processes.","downloadable_attachments":[{"id":40132792,"asset_id":18568062,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":38513004,"first_name":"Jean-francois","last_name":"Hausman","domain_name":"liscitech","page_name":"JeanfrancoisHausman","display_name":"Jean-francois Hausman","profile_url":"https://liscitech.academia.edu/JeanfrancoisHausman?f_ri=15372","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":48,"name":"Engineering","url":"https://www.academia.edu/Documents/in/Engineering?f_ri=15372","nofollow":true},{"id":923,"name":"Technology","url":"https://www.academia.edu/Documents/in/Technology?f_ri=15372","nofollow":true},{"id":2215,"name":"Water","url":"https://www.academia.edu/Documents/in/Water?f_ri=15372","nofollow":true},{"id":5769,"name":"Mass Spectrometry","url":"https://www.academia.edu/Documents/in/Mass_Spectrometry?f_ri=15372","nofollow":true},{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372"},{"id":20286,"name":"Drought Stress","url":"https://www.academia.edu/Documents/in/Drought_Stress?f_ri=15372"},{"id":55446,"name":"Populus","url":"https://www.academia.edu/Documents/in/Populus?f_ri=15372"},{"id":246560,"name":"High Pressure Liquid Chromatography","url":"https://www.academia.edu/Documents/in/High_Pressure_Liquid_Chromatography?f_ri=15372"},{"id":260118,"name":"CHEMICAL SCIENCES","url":"https://www.academia.edu/Documents/in/CHEMICAL_SCIENCES?f_ri=15372"},{"id":297691,"name":"High performance","url":"https://www.academia.edu/Documents/in/High_performance?f_ri=15372"},{"id":326380,"name":"Liquid Chromatography / Electrospray Ionization Mass Spectrometry","url":"https://www.academia.edu/Documents/in/Liquid_Chromatography_Electrospray_Ionization_Mass_Spectrometry?f_ri=15372"},{"id":549280,"name":"Reproducibility of Results","url":"https://www.academia.edu/Documents/in/Reproducibility_of_Results?f_ri=15372"},{"id":609249,"name":"CARBOHYDRATES","url":"https://www.academia.edu/Documents/in/CARBOHYDRATES?f_ri=15372"},{"id":806074,"name":"Water Deficit","url":"https://www.academia.edu/Documents/in/Water_Deficit?f_ri=15372"},{"id":1826013,"name":"Mass Spectrometer","url":"https://www.academia.edu/Documents/in/Mass_Spectrometer?f_ri=15372"},{"id":1905343,"name":"Plant Leaves","url":"https://www.academia.edu/Documents/in/Plant_Leaves?f_ri=15372"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_18830248" data-work_id="18830248" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/18830248/Quantitative_analysis_of_perchlorate_in_extracts_of_whole_fish_homogenates_by_ion_chromatography_comparison_of_suppressed_conductivity_detection_and_electrospray_ionization_mass_spectrometry">Quantitative analysis of perchlorate in extracts of whole fish homogenates by ion chromatography: comparison of suppressed conductivity detection and electrospray ionization mass spectrometry</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">Quantitative analysis of perchlorate in extracts of whole fish homogenates by ion chromatography: comparison of suppressed conductivity detection and electrospray ionization mass spectrometry Abstract The perchlorate anion (ClO 4 ) ) is... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_18830248" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">Quantitative analysis of perchlorate in extracts of whole fish homogenates by ion chromatography: comparison of suppressed conductivity detection and electrospray ionization mass spectrometry Abstract The perchlorate anion (ClO 4 ) ) is an anthropogenic contaminant of increasing concern in water supplies, and has been shown to disrupt thyroid activity. Most perchlorate analyses are currently carried out by ion chromatography (IC) with suppressed conductivity detection (SCD). While this procedure has been demonstrated to provide acceptable performance for analysis of water samples, the determination of perchlorate in high-conductivity aqueous extracts of plant or animal material is not readily accomplished by IC-SCD unless lengthy cleanup protocols are applied. With the addition of electrospray ionization mass spectrometry (ESI-MS) to IC, it was hypothesized that the interference imposed by various ionic species could be significantly reduced without the need for purification; however, the analysis of perchlorate in relatively unpurified extracts of biologically derived homogenates by IC-ESI-MS has not previously been described in the literature. The research presented here represents a comparison of the capabilities of IC-SCD and IC-ESI-MS to detect perchlorate in reagent water and in crude extracts of perchlorate-exposed fish (threespine stickleback, Gasterosteus aculeatus). ESI-MS was found to compare favorably to SCD for the detection of perchlorate in deionized water, and to exceed SCD performance in perchlorate analysis of fish-derived extracts.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/18830248" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="d5d6ac29d312a9f81e38711612f43164" rel="nofollow" data-download="{"attachment_id":40278211,"asset_id":18830248,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/40278211/download_file?st=MTc0MDkzMDYzMSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="38922126" href="https://independent.academia.edu/JohnKennish">John Kennish</a><script data-card-contents-for-user="38922126" type="text/json">{"id":38922126,"first_name":"John","last_name":"Kennish","domain_name":"independent","page_name":"JohnKennish","display_name":"John Kennish","profile_url":"https://independent.academia.edu/JohnKennish?f_ri=15372","photo":"/images/s65_no_pic.png"}</script></span></span></li><li class="js-paper-rank-work_18830248 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="18830248"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 18830248, container: ".js-paper-rank-work_18830248", }); 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$(".js-view-count[data-work-id=18830248]").text(description); $(".js-view-count-work_18830248").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_18830248").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="18830248"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">17</a>  </div><span class="InlineList-item-text u-textTruncate u-pl10x"><a class="InlineList-item-text" data-has-card-for-ri="48" rel="nofollow" href="https://www.academia.edu/Documents/in/Engineering">Engineering</a>, <script data-card-contents-for-ri="48" type="text/json">{"id":48,"name":"Engineering","url":"https://www.academia.edu/Documents/in/Engineering?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="4656" rel="nofollow" href="https://www.academia.edu/Documents/in/Chromatography">Chromatography</a>, <script data-card-contents-for-ri="4656" type="text/json">{"id":4656,"name":"Chromatography","url":"https://www.academia.edu/Documents/in/Chromatography?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="15372" rel="nofollow" href="https://www.academia.edu/Documents/in/Ion_Chromatography">Ion Chromatography</a>, <script data-card-contents-for-ri="15372" type="text/json">{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="37434" rel="nofollow" href="https://www.academia.edu/Documents/in/Quantitative_analysis">Quantitative analysis</a><script data-card-contents-for-ri="37434" type="text/json">{"id":37434,"name":"Quantitative analysis","url":"https://www.academia.edu/Documents/in/Quantitative_analysis?f_ri=15372","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=18830248]'), work: {"id":18830248,"title":"Quantitative analysis of perchlorate in extracts of whole fish homogenates by ion chromatography: comparison of suppressed conductivity detection and electrospray ionization mass spectrometry","created_at":"2015-11-22T18:09:34.388-08:00","url":"https://www.academia.edu/18830248/Quantitative_analysis_of_perchlorate_in_extracts_of_whole_fish_homogenates_by_ion_chromatography_comparison_of_suppressed_conductivity_detection_and_electrospray_ionization_mass_spectrometry?f_ri=15372","dom_id":"work_18830248","summary":"Quantitative analysis of perchlorate in extracts of whole fish homogenates by ion chromatography: comparison of suppressed conductivity detection and electrospray ionization mass spectrometry Abstract The perchlorate anion (ClO 4 ) ) is an anthropogenic contaminant of increasing concern in water supplies, and has been shown to disrupt thyroid activity. Most perchlorate analyses are currently carried out by ion chromatography (IC) with suppressed conductivity detection (SCD). While this procedure has been demonstrated to provide acceptable performance for analysis of water samples, the determination of perchlorate in high-conductivity aqueous extracts of plant or animal material is not readily accomplished by IC-SCD unless lengthy cleanup protocols are applied. With the addition of electrospray ionization mass spectrometry (ESI-MS) to IC, it was hypothesized that the interference imposed by various ionic species could be significantly reduced without the need for purification; however, the analysis of perchlorate in relatively unpurified extracts of biologically derived homogenates by IC-ESI-MS has not previously been described in the literature. The research presented here represents a comparison of the capabilities of IC-SCD and IC-ESI-MS to detect perchlorate in reagent water and in crude extracts of perchlorate-exposed fish (threespine stickleback, Gasterosteus aculeatus). ESI-MS was found to compare favorably to SCD for the detection of perchlorate in deionized water, and to exceed SCD performance in perchlorate analysis of fish-derived extracts.","downloadable_attachments":[{"id":40278211,"asset_id":18830248,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":38922126,"first_name":"John","last_name":"Kennish","domain_name":"independent","page_name":"JohnKennish","display_name":"John Kennish","profile_url":"https://independent.academia.edu/JohnKennish?f_ri=15372","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":48,"name":"Engineering","url":"https://www.academia.edu/Documents/in/Engineering?f_ri=15372","nofollow":true},{"id":4656,"name":"Chromatography","url":"https://www.academia.edu/Documents/in/Chromatography?f_ri=15372","nofollow":true},{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true},{"id":37434,"name":"Quantitative analysis","url":"https://www.academia.edu/Documents/in/Quantitative_analysis?f_ri=15372","nofollow":true},{"id":47884,"name":"Biological Sciences","url":"https://www.academia.edu/Documents/in/Biological_Sciences?f_ri=15372"},{"id":64055,"name":"Water Supply","url":"https://www.academia.edu/Documents/in/Water_Supply?f_ri=15372"},{"id":96893,"name":"Calibration","url":"https://www.academia.edu/Documents/in/Calibration?f_ri=15372"},{"id":117270,"name":"Fishes","url":"https://www.academia.edu/Documents/in/Fishes?f_ri=15372"},{"id":132569,"name":"Analytical","url":"https://www.academia.edu/Documents/in/Analytical?f_ri=15372"},{"id":260118,"name":"CHEMICAL SCIENCES","url":"https://www.academia.edu/Documents/in/CHEMICAL_SCIENCES?f_ri=15372"},{"id":326380,"name":"Liquid Chromatography / Electrospray Ionization Mass Spectrometry","url":"https://www.academia.edu/Documents/in/Liquid_Chromatography_Electrospray_Ionization_Mass_Spectrometry?f_ri=15372"},{"id":621932,"name":"Analytical and Bioanalytical Chemistry","url":"https://www.academia.edu/Documents/in/Analytical_and_Bioanalytical_Chemistry?f_ri=15372"},{"id":641216,"name":"Quantitative Analysis","url":"https://www.academia.edu/Documents/in/Quantitative_Analysis-1?f_ri=15372"},{"id":901876,"name":"Sensitivity and Specificity","url":"https://www.academia.edu/Documents/in/Sensitivity_and_Specificity?f_ri=15372"},{"id":1174953,"name":"Aqueous Extract","url":"https://www.academia.edu/Documents/in/Aqueous_Extract?f_ri=15372"},{"id":1247899,"name":"Sodium Compounds","url":"https://www.academia.edu/Documents/in/Sodium_Compounds?f_ri=15372"},{"id":1626169,"name":"Gasterosteus aculeatus","url":"https://www.academia.edu/Documents/in/Gasterosteus_aculeatus?f_ri=15372"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_13864459 coauthored" data-work_id="13864459" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/13864459/Determination_of_biogenic_amines_in_fresh_and_processed_meat_by_suppressed_ion_chromatography_mass_spectrometry_using_a_cation_exchange_column">Determination of biogenic amines in fresh and processed meat by suppressed ion chromatography-mass spectrometry using a cation-exchange column</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">A new method for simultaneous determination of underivatized biogenic amines based on the separation by cation-exchange chromatography and suppressed conductivity coupled with mass spectrometry detection has been developed. The method has... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_13864459" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">A new method for simultaneous determination of underivatized biogenic amines based on the separation by cation-exchange chromatography and suppressed conductivity coupled with mass spectrometry detection has been developed. The method has been applied to the analysis of cadaverine, putrescine, histamine, agmatine, phenethylamine and spermidine in processed meat products. The amines were extracted from muscle tissue with methanesulfonic acid without any additional derivative step or sample clean-up. Biogenic amines were separated by the IonPac CS17 column, a cation-exchange column used with gradient elution, and detection was done by suppressed conductivity and mass spectrometry. Tyramine was simultaneously analysed by using a spectrophotometer (275 nm) before the suppressed conductivity detection. Linearity of response was obtained in the range 0.25-25 g mL −1 . The detection limits ranged from 23 g L −1 for putrescine to 155 g L −1 for spermidine (suppressed conductivity) and from 9 g L −1 for agmatine to 34 g L −1 for spermidine (MS). Average recoveries from meat samples ranged from 85 to 97% and coefficients of variation ranged from 4.5 to 9.7%. The analysis of biogenic amines in fresh and processed meats (dry-cured, cooked and fermented products) can be used as a quality marker of raw material and for studying the relationship between their changes and the fermentation process involved in dry sausage ripening.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/13864459" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="deb38690bc9091dcf2da8300a3642e69" rel="nofollow" data-download="{"attachment_id":44865030,"asset_id":13864459,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/44865030/download_file?st=MTc0MDkzMDYzMSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="33086771" href="https://independent.academia.edu/SaccaniG">G. Saccani</a><script data-card-contents-for-user="33086771" type="text/json">{"id":33086771,"first_name":"G.","last_name":"Saccani","domain_name":"independent","page_name":"SaccaniG","display_name":"G. Saccani","profile_url":"https://independent.academia.edu/SaccaniG?f_ri=15372","photo":"/images/s65_no_pic.png"}</script></span></span><span class="u-displayInlineBlock InlineList-item-text"> and <span class="u-textDecorationUnderline u-clickable InlineList-item-text js-work-more-authors-13864459">+1</span><div class="hidden js-additional-users-13864459"><div><span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a href="https://unipd.academia.edu/PaoloPastore">Paolo Pastore</a></span></div></div></span><script>(function(){ var popoverSettings = { el: $('.js-work-more-authors-13864459'), placement: 'bottom', hide_delay: 200, html: true, content: function(){ return $('.js-additional-users-13864459').html(); } } new HoverPopover(popoverSettings); })();</script></li><li class="js-paper-rank-work_13864459 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="13864459"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 13864459, container: ".js-paper-rank-work_13864459", }); 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$(".js-view-count[data-work-id=13864459]").text(description); $(".js-view-count-work_13864459").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_13864459").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="13864459"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">16</a>  </div><span class="InlineList-item-text u-textTruncate u-pl10x"><a class="InlineList-item-text" data-has-card-for-ri="48" rel="nofollow" href="https://www.academia.edu/Documents/in/Engineering">Engineering</a>, <script data-card-contents-for-ri="48" type="text/json">{"id":48,"name":"Engineering","url":"https://www.academia.edu/Documents/in/Engineering?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="923" rel="nofollow" href="https://www.academia.edu/Documents/in/Technology">Technology</a>, <script data-card-contents-for-ri="923" type="text/json">{"id":923,"name":"Technology","url":"https://www.academia.edu/Documents/in/Technology?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="5769" rel="nofollow" href="https://www.academia.edu/Documents/in/Mass_Spectrometry">Mass Spectrometry</a>, <script data-card-contents-for-ri="5769" type="text/json">{"id":5769,"name":"Mass Spectrometry","url":"https://www.academia.edu/Documents/in/Mass_Spectrometry?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="15372" rel="nofollow" href="https://www.academia.edu/Documents/in/Ion_Chromatography">Ion Chromatography</a><script data-card-contents-for-ri="15372" type="text/json">{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=13864459]'), work: {"id":13864459,"title":"Determination of biogenic amines in fresh and processed meat by suppressed ion chromatography-mass spectrometry using a cation-exchange column","created_at":"2015-07-10T00:00:37.343-07:00","url":"https://www.academia.edu/13864459/Determination_of_biogenic_amines_in_fresh_and_processed_meat_by_suppressed_ion_chromatography_mass_spectrometry_using_a_cation_exchange_column?f_ri=15372","dom_id":"work_13864459","summary":"A new method for simultaneous determination of underivatized biogenic amines based on the separation by cation-exchange chromatography and suppressed conductivity coupled with mass spectrometry detection has been developed. The method has been applied to the analysis of cadaverine, putrescine, histamine, agmatine, phenethylamine and spermidine in processed meat products. The amines were extracted from muscle tissue with methanesulfonic acid without any additional derivative step or sample clean-up. Biogenic amines were separated by the IonPac CS17 column, a cation-exchange column used with gradient elution, and detection was done by suppressed conductivity and mass spectrometry. Tyramine was simultaneously analysed by using a spectrophotometer (275 nm) before the suppressed conductivity detection. Linearity of response was obtained in the range 0.25-25 g mL −1 . The detection limits ranged from 23 g L −1 for putrescine to 155 g L −1 for spermidine (suppressed conductivity) and from 9 g L −1 for agmatine to 34 g L −1 for spermidine (MS). Average recoveries from meat samples ranged from 85 to 97% and coefficients of variation ranged from 4.5 to 9.7%. The analysis of biogenic amines in fresh and processed meats (dry-cured, cooked and fermented products) can be used as a quality marker of raw material and for studying the relationship between their changes and the fermentation process involved in dry sausage ripening.","downloadable_attachments":[{"id":44865030,"asset_id":13864459,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":33086771,"first_name":"G.","last_name":"Saccani","domain_name":"independent","page_name":"SaccaniG","display_name":"G. Saccani","profile_url":"https://independent.academia.edu/SaccaniG?f_ri=15372","photo":"/images/s65_no_pic.png"},{"id":32952207,"first_name":"Paolo","last_name":"Pastore","domain_name":"unipd","page_name":"PaoloPastore","display_name":"Paolo Pastore","profile_url":"https://unipd.academia.edu/PaoloPastore?f_ri=15372","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":48,"name":"Engineering","url":"https://www.academia.edu/Documents/in/Engineering?f_ri=15372","nofollow":true},{"id":923,"name":"Technology","url":"https://www.academia.edu/Documents/in/Technology?f_ri=15372","nofollow":true},{"id":5769,"name":"Mass Spectrometry","url":"https://www.academia.edu/Documents/in/Mass_Spectrometry?f_ri=15372","nofollow":true},{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true},{"id":16137,"name":"Food Chemistry","url":"https://www.academia.edu/Documents/in/Food_Chemistry?f_ri=15372"},{"id":28235,"name":"Multidisciplinary","url":"https://www.academia.edu/Documents/in/Multidisciplinary?f_ri=15372"},{"id":73666,"name":"Cooking","url":"https://www.academia.edu/Documents/in/Cooking?f_ri=15372"},{"id":80691,"name":"Raw materials","url":"https://www.academia.edu/Documents/in/Raw_materials?f_ri=15372"},{"id":107106,"name":"Meat","url":"https://www.academia.edu/Documents/in/Meat?f_ri=15372"},{"id":184682,"name":"Coefficient of Variation","url":"https://www.academia.edu/Documents/in/Coefficient_of_Variation?f_ri=15372"},{"id":260118,"name":"CHEMICAL SCIENCES","url":"https://www.academia.edu/Documents/in/CHEMICAL_SCIENCES?f_ri=15372"},{"id":419370,"name":"Swine","url":"https://www.academia.edu/Documents/in/Swine?f_ri=15372"},{"id":613764,"name":"Meat products","url":"https://www.academia.edu/Documents/in/Meat_products?f_ri=15372"},{"id":872101,"name":"Biogenic amines","url":"https://www.academia.edu/Documents/in/Biogenic_amines?f_ri=15372"},{"id":1119031,"name":"Cation Exchange","url":"https://www.academia.edu/Documents/in/Cation_Exchange?f_ri=15372"},{"id":1574244,"name":"Fermentation Process","url":"https://www.academia.edu/Documents/in/Fermentation_Process?f_ri=15372"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_21242881" data-work_id="21242881" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/21242881/Determination_of_inorganic_anions_in_environmental_waters_with_a_hydroxide_selective_column">Determination of inorganic anions in environmental waters with a hydroxide-selective column</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">US Environmental Protection Agency Method 300.0 specifies the use of an IonPac AS4A anion-exchange column with a carbonate–hydrogencarbonate eluent and suppressed conductivity detection for the determination of inorganic anions in... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_21242881" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">US Environmental Protection Agency Method 300.0 specifies the use of an IonPac AS4A anion-exchange column with a carbonate–hydrogencarbonate eluent and suppressed conductivity detection for the determination of inorganic anions in environmental waters by ion chromatography. Hydroxide eluents have not typically been used for the routine analysis of common inorganic anions due to the lack of an appropriate hydroxide selective column</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/21242881" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="c0557bcf5d3bf4db58661bfbfc246f4d" rel="nofollow" data-download="{"attachment_id":41778876,"asset_id":21242881,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/41778876/download_file?st=MTc0MDkzMDYzMSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="42373651" href="https://washington.academia.edu/ChristopherPohl">Christopher Pohl</a><script data-card-contents-for-user="42373651" type="text/json">{"id":42373651,"first_name":"Christopher","last_name":"Pohl","domain_name":"washington","page_name":"ChristopherPohl","display_name":"Christopher Pohl","profile_url":"https://washington.academia.edu/ChristopherPohl?f_ri=15372","photo":"https://0.academia-photos.com/42373651/45618932/35515423/s65_christopher.pohl.jpg"}</script></span></span></li><li class="js-paper-rank-work_21242881 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="21242881"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 21242881, container: ".js-paper-rank-work_21242881", }); 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$(".js-view-count[data-work-id=21242881]").text(description); $(".js-view-count-work_21242881").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_21242881").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="21242881"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">14</a>  </div><span class="InlineList-item-text u-textTruncate u-pl10x"><a class="InlineList-item-text" data-has-card-for-ri="48" rel="nofollow" href="https://www.academia.edu/Documents/in/Engineering">Engineering</a>, <script data-card-contents-for-ri="48" type="text/json">{"id":48,"name":"Engineering","url":"https://www.academia.edu/Documents/in/Engineering?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="923" rel="nofollow" href="https://www.academia.edu/Documents/in/Technology">Technology</a>, <script data-card-contents-for-ri="923" type="text/json">{"id":923,"name":"Technology","url":"https://www.academia.edu/Documents/in/Technology?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="15372" rel="nofollow" href="https://www.academia.edu/Documents/in/Ion_Chromatography">Ion Chromatography</a>, <script data-card-contents-for-ri="15372" type="text/json">{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="37306" rel="nofollow" href="https://www.academia.edu/Documents/in/Quality_Control">Quality Control</a><script data-card-contents-for-ri="37306" type="text/json">{"id":37306,"name":"Quality Control","url":"https://www.academia.edu/Documents/in/Quality_Control?f_ri=15372","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=21242881]'), work: {"id":21242881,"title":"Determination of inorganic anions in environmental waters with a hydroxide-selective column","created_at":"2016-01-30T07:54:59.094-08:00","url":"https://www.academia.edu/21242881/Determination_of_inorganic_anions_in_environmental_waters_with_a_hydroxide_selective_column?f_ri=15372","dom_id":"work_21242881","summary":"US Environmental Protection Agency Method 300.0 specifies the use of an IonPac AS4A anion-exchange column with a carbonate–hydrogencarbonate eluent and suppressed conductivity detection for the determination of inorganic anions in environmental waters by ion chromatography. Hydroxide eluents have not typically been used for the routine analysis of common inorganic anions due to the lack of an appropriate hydroxide selective column","downloadable_attachments":[{"id":41778876,"asset_id":21242881,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":42373651,"first_name":"Christopher","last_name":"Pohl","domain_name":"washington","page_name":"ChristopherPohl","display_name":"Christopher Pohl","profile_url":"https://washington.academia.edu/ChristopherPohl?f_ri=15372","photo":"https://0.academia-photos.com/42373651/45618932/35515423/s65_christopher.pohl.jpg"}],"research_interests":[{"id":48,"name":"Engineering","url":"https://www.academia.edu/Documents/in/Engineering?f_ri=15372","nofollow":true},{"id":923,"name":"Technology","url":"https://www.academia.edu/Documents/in/Technology?f_ri=15372","nofollow":true},{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true},{"id":37306,"name":"Quality Control","url":"https://www.academia.edu/Documents/in/Quality_Control?f_ri=15372","nofollow":true},{"id":160656,"name":"Potassium","url":"https://www.academia.edu/Documents/in/Potassium?f_ri=15372"},{"id":251652,"name":"Water Use","url":"https://www.academia.edu/Documents/in/Water_Use?f_ri=15372"},{"id":260118,"name":"CHEMICAL SCIENCES","url":"https://www.academia.edu/Documents/in/CHEMICAL_SCIENCES?f_ri=15372"},{"id":263252,"name":"Anions","url":"https://www.academia.edu/Documents/in/Anions?f_ri=15372"},{"id":541786,"name":"Inorganic chemicals","url":"https://www.academia.edu/Documents/in/Inorganic_chemicals?f_ri=15372"},{"id":549280,"name":"Reproducibility of Results","url":"https://www.academia.edu/Documents/in/Reproducibility_of_Results?f_ri=15372"},{"id":642878,"name":"Ease of Use","url":"https://www.academia.edu/Documents/in/Ease_of_Use?f_ri=15372"},{"id":806478,"name":"Method Validation","url":"https://www.academia.edu/Documents/in/Method_Validation?f_ri=15372"},{"id":1131784,"name":"Environmental Protection Agency","url":"https://www.academia.edu/Documents/in/Environmental_Protection_Agency?f_ri=15372"},{"id":1701407,"name":"Organic Acid","url":"https://www.academia.edu/Documents/in/Organic_Acid?f_ri=15372"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_5641915" data-work_id="5641915" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/5641915/Column_Chromatography_Purified_Phytochemicals_Identified_in_Phragmytes_vallatoria_Leaf_Ethanolic_Extract">Column Chromatography Purified Phytochemicals Identified in Phragmytes vallatoria Leaf Ethanolic Extract</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">Phragmytes vallatoria belongs to the family poaceae. The complexity of leaf ethanolic extract can be simplified through column chromatography. Different solvent mixtures were used in elution systems i.e., hexane, ethyl acetate and... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_5641915" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">Phragmytes vallatoria belongs to the family poaceae. The complexity of leaf ethanolic extract can be simplified through column chromatography. Different solvent mixtures were used in elution systems i.e., hexane, ethyl acetate and methanol. The concentrated ethanolic leaf extract of 100 g was fractionated by column chromatography on silica gel (60-120 mesh). Major fractions were (hexane + ethyl acetate 9:1 and ethyl acetate + methanol 8.5: 1.5 fraction) and identified the major phytochemicals through NIST Electron Ionization Mass database. The identified compounds were 9, 12, 15-Octadecatrienoic acid, ethyl ester, (Z, Z, Z)-, Androstane-11, 17-dione, 3-hydroxy-, (3.alpha. 5. alpha)-, 9,12-Octadecadienoic acid ethyl ester and 9-12-15-Octadecatrienoic acid, ethyl ester, (Z,Z,Z)-. Only one peak was observed in ethyl acetate and methanol (8.5: 1.5) fraction and it was subjected to GC-MS and HPLC. The structures were (Benzenamine, 3-(methylthio)-, Morpholine, Phenanthrene and 3-Eicosene, (E).</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/5641915" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="604b338de6cd1e1111cf4e0167f96149" rel="nofollow" data-download="{"attachment_id":32706468,"asset_id":5641915,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/32706468/download_file?st=MTc0MDkzMDYzMSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="7531070" href="https://independent.academia.edu/EditorAJADD">American Journal of Advanced Drug Delivery (AJADD)</a><script data-card-contents-for-user="7531070" type="text/json">{"id":7531070,"first_name":"American Journal of Advanced Drug Delivery","last_name":"(AJADD)","domain_name":"independent","page_name":"EditorAJADD","display_name":"American Journal of Advanced Drug Delivery (AJADD)","profile_url":"https://independent.academia.edu/EditorAJADD?f_ri=15372","photo":"https://0.academia-photos.com/7531070/5915505/6716726/s65_editor.ajadd.jpg"}</script></span></span></li><li class="js-paper-rank-work_5641915 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="5641915"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 5641915, container: ".js-paper-rank-work_5641915", }); 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$(".js-view-count[data-work-id=5641915]").text(description); $(".js-view-count-work_5641915").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_5641915").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="5641915"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">41</a>  </div><span class="InlineList-item-text u-textTruncate u-pl10x"><a class="InlineList-item-text" data-has-card-for-ri="140" rel="nofollow" href="https://www.academia.edu/Documents/in/Pharmacology">Pharmacology</a>, <script data-card-contents-for-ri="140" type="text/json">{"id":140,"name":"Pharmacology","url":"https://www.academia.edu/Documents/in/Pharmacology?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="145" rel="nofollow" href="https://www.academia.edu/Documents/in/Biochemistry">Biochemistry</a>, <script data-card-contents-for-ri="145" type="text/json">{"id":145,"name":"Biochemistry","url":"https://www.academia.edu/Documents/in/Biochemistry?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="523" rel="nofollow" href="https://www.academia.edu/Documents/in/Chemistry">Chemistry</a>, <script data-card-contents-for-ri="523" type="text/json">{"id":523,"name":"Chemistry","url":"https://www.academia.edu/Documents/in/Chemistry?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="656" rel="nofollow" href="https://www.academia.edu/Documents/in/Pharmacy">Pharmacy</a><script data-card-contents-for-ri="656" type="text/json">{"id":656,"name":"Pharmacy","url":"https://www.academia.edu/Documents/in/Pharmacy?f_ri=15372","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=5641915]'), work: {"id":5641915,"title":"Column Chromatography Purified Phytochemicals Identified in Phragmytes vallatoria Leaf Ethanolic Extract","created_at":"2014-01-08T00:47:28.639-08:00","url":"https://www.academia.edu/5641915/Column_Chromatography_Purified_Phytochemicals_Identified_in_Phragmytes_vallatoria_Leaf_Ethanolic_Extract?f_ri=15372","dom_id":"work_5641915","summary":"Phragmytes vallatoria belongs to the family poaceae. The complexity of leaf ethanolic extract can be simplified through column chromatography. Different solvent mixtures were used in elution systems i.e., hexane, ethyl acetate and methanol. The concentrated ethanolic leaf extract of 100 g was fractionated by column chromatography on silica gel (60-120 mesh). Major fractions were (hexane + ethyl acetate 9:1 and ethyl acetate + methanol 8.5: 1.5 fraction) and identified the major phytochemicals through NIST Electron Ionization Mass database. The identified compounds were 9, 12, 15-Octadecatrienoic acid, ethyl ester, (Z, Z, Z)-, Androstane-11, 17-dione, 3-hydroxy-, (3.alpha. 5. alpha)-, 9,12-Octadecadienoic acid ethyl ester and 9-12-15-Octadecatrienoic acid, ethyl ester, (Z,Z,Z)-. Only one peak was observed in ethyl acetate and methanol (8.5: 1.5) fraction and it was subjected to GC-MS and HPLC. The structures were (Benzenamine, 3-(methylthio)-, Morpholine, Phenanthrene and 3-Eicosene, (E).","downloadable_attachments":[{"id":32706468,"asset_id":5641915,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":7531070,"first_name":"American Journal of Advanced Drug Delivery","last_name":"(AJADD)","domain_name":"independent","page_name":"EditorAJADD","display_name":"American Journal of Advanced Drug Delivery 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Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372"},{"id":132234,"name":"Gas chromatography/Continuous flow/Isotope ratio mass spectrometry","url":"https://www.academia.edu/Documents/in/Gas_chromatography_Continuous_flow_Isotope_ratio_mass_spectrometry?f_ri=15372"},{"id":141599,"name":"Inverse Gas chromatography","url":"https://www.academia.edu/Documents/in/Inverse_Gas_chromatography?f_ri=15372"},{"id":150560,"name":"HPTL (High Performance Thin Layer Chromatography)","url":"https://www.academia.edu/Documents/in/HPTL_High_Performance_Thin_Layer_Chromatography_?f_ri=15372"},{"id":166448,"name":"Gas Chromatography","url":"https://www.academia.edu/Documents/in/Gas_Chromatography?f_ri=15372"},{"id":201241,"name":"Affinity chromatography","url":"https://www.academia.edu/Documents/in/Affinity_chromatography?f_ri=15372"},{"id":203965,"name":"Ion Exchange 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Chromatography","url":"https://www.academia.edu/Documents/in/Separation_Science_and_Chromatography?f_ri=15372"},{"id":398287,"name":"Liquid Chromatography","url":"https://www.academia.edu/Documents/in/Liquid_Chromatography?f_ri=15372"},{"id":419305,"name":"Comprehensive Two Dimensional Gas Chromatography","url":"https://www.academia.edu/Documents/in/Comprehensive_Two_Dimensional_Gas_Chromatography?f_ri=15372"},{"id":456925,"name":"Centrifugal Partition Chromatography","url":"https://www.academia.edu/Documents/in/Centrifugal_Partition_Chromatography?f_ri=15372"},{"id":471342,"name":"Thin-Layer Chromatography","url":"https://www.academia.edu/Documents/in/Thin-Layer_Chromatography?f_ri=15372"},{"id":519420,"name":"Column chromatography","url":"https://www.academia.edu/Documents/in/Column_chromatography?f_ri=15372"},{"id":519421,"name":"Bio-chromatography","url":"https://www.academia.edu/Documents/in/Bio-chromatography?f_ri=15372"},{"id":529560,"name":"Gas Chromatography/mass Spectrometry","url":"https://www.academia.edu/Documents/in/Gas_Chromatography_mass_Spectrometry?f_ri=15372"},{"id":529561,"name":"Analysis of dyes by gas chromatography-mass spectrometry (GC-MS)","url":"https://www.academia.edu/Documents/in/Analysis_of_dyes_by_gas_chromatography-mass_spectrometry_GC-MS_?f_ri=15372"},{"id":532915,"name":"Skills \u0026 Expertise : Spectrophotometry TLC-Optical Scanning Densitometry TLC-Image Analysis TLC-Spectrometry Industrial Wate Recycling \u0026 Product Generation FTIR Applied Thin Layer Chromatography Colour Quantification and Analytical Applications","url":"https://www.academia.edu/Documents/in/Skills_and_Expertise_Spectrophotometry_TLC-Optical_Scanning_Densitometry_TLC-Image_Analysis_TLC-Spec?f_ri=15372"},{"id":578615,"name":"Multidimensional Chromatography","url":"https://www.academia.edu/Documents/in/Multidimensional_Chromatography?f_ri=15372"},{"id":630201,"name":"Planar 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Chromatography","url":"https://www.academia.edu/Documents/in/Quntitative_Thin_Layer_Chromatography?f_ri=15372"},{"id":1022164,"name":"Natural Products Chemistry Isolation Marine Natural Products Chromatography Structure Elucidation NMR Spectroscopy Natural product research Natural Product","url":"https://www.academia.edu/Documents/in/Natural_Products_Chemistry_Isolation_Marine_Natural_Products_Chromatography_Structure_Elucidation_NM?f_ri=15372"},{"id":1035183,"name":"Gas Chromatography Analysis","url":"https://www.academia.edu/Documents/in/Gas_Chromatography_Analysis?f_ri=15372"},{"id":1035614,"name":"Cation Exchange Chromatography","url":"https://www.academia.edu/Documents/in/Cation_Exchange_Chromatography?f_ri=15372"},{"id":1106360,"name":"Nano Liquid Chromatography","url":"https://www.academia.edu/Documents/in/Nano_Liquid_Chromatography?f_ri=15372"},{"id":1175860,"name":"Thin Layer Chromatography","url":"https://www.academia.edu/Documents/in/Thin_Layer_Chromatography?f_ri=15372"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_21242484" data-work_id="21242484" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/21242484/Prediction_of_Analyte_Retention_for_Ion_Chromatography_Separations_Performed_Using_Elution_Profiles_Comprising_Multiple_Isocratic_and_Gradient_Steps">Prediction of Analyte Retention for Ion Chromatography Separations Performed Using Elution Profiles Comprising Multiple Isocratic and Gradient Steps</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest">1) Rocklin, R. D.; Pohl, C. A.; Schibler, J. A.</div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/21242484" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="1beb9c8fd0ccf42da2d922e19c8f31da" rel="nofollow" data-download="{"attachment_id":41778699,"asset_id":21242484,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/41778699/download_file?st=MTc0MDkzMDYzMSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="42373651" href="https://washington.academia.edu/ChristopherPohl">Christopher Pohl</a><script data-card-contents-for-user="42373651" type="text/json">{"id":42373651,"first_name":"Christopher","last_name":"Pohl","domain_name":"washington","page_name":"ChristopherPohl","display_name":"Christopher Pohl","profile_url":"https://washington.academia.edu/ChristopherPohl?f_ri=15372","photo":"https://0.academia-photos.com/42373651/45618932/35515423/s65_christopher.pohl.jpg"}</script></span></span></li><li class="js-paper-rank-work_21242484 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="21242484"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 21242484, container: ".js-paper-rank-work_21242484", }); 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$(".js-view-count[data-work-id=21242484]").text(description); $(".js-view-count-work_21242484").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_21242484").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="21242484"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">4</a>  </div><span class="InlineList-item-text u-textTruncate u-pl9x"><a class="InlineList-item-text" data-has-card-for-ri="72" rel="nofollow" href="https://www.academia.edu/Documents/in/Chemical_Engineering">Chemical Engineering</a>, <script data-card-contents-for-ri="72" type="text/json">{"id":72,"name":"Chemical Engineering","url":"https://www.academia.edu/Documents/in/Chemical_Engineering?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="524" rel="nofollow" href="https://www.academia.edu/Documents/in/Analytical_Chemistry">Analytical Chemistry</a>, <script data-card-contents-for-ri="524" type="text/json">{"id":524,"name":"Analytical Chemistry","url":"https://www.academia.edu/Documents/in/Analytical_Chemistry?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="15372" rel="nofollow" href="https://www.academia.edu/Documents/in/Ion_Chromatography">Ion Chromatography</a>, <script data-card-contents-for-ri="15372" type="text/json">{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="132569" rel="nofollow" href="https://www.academia.edu/Documents/in/Analytical">Analytical</a><script data-card-contents-for-ri="132569" type="text/json">{"id":132569,"name":"Analytical","url":"https://www.academia.edu/Documents/in/Analytical?f_ri=15372","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=21242484]'), work: {"id":21242484,"title":"Prediction of Analyte Retention for Ion Chromatography Separations Performed Using Elution Profiles Comprising Multiple Isocratic and Gradient Steps","created_at":"2016-01-30T07:50:56.980-08:00","url":"https://www.academia.edu/21242484/Prediction_of_Analyte_Retention_for_Ion_Chromatography_Separations_Performed_Using_Elution_Profiles_Comprising_Multiple_Isocratic_and_Gradient_Steps?f_ri=15372","dom_id":"work_21242484","summary":"1) Rocklin, R. D.; Pohl, C. A.; Schibler, J. A.","downloadable_attachments":[{"id":41778699,"asset_id":21242484,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":42373651,"first_name":"Christopher","last_name":"Pohl","domain_name":"washington","page_name":"ChristopherPohl","display_name":"Christopher Pohl","profile_url":"https://washington.academia.edu/ChristopherPohl?f_ri=15372","photo":"https://0.academia-photos.com/42373651/45618932/35515423/s65_christopher.pohl.jpg"}],"research_interests":[{"id":72,"name":"Chemical Engineering","url":"https://www.academia.edu/Documents/in/Chemical_Engineering?f_ri=15372","nofollow":true},{"id":524,"name":"Analytical Chemistry","url":"https://www.academia.edu/Documents/in/Analytical_Chemistry?f_ri=15372","nofollow":true},{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true},{"id":132569,"name":"Analytical","url":"https://www.academia.edu/Documents/in/Analytical?f_ri=15372","nofollow":true}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_4189325" data-work_id="4189325" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/4189325/Denuder_measurements_of_gas_and_aerosol_species_above_Arctic_snow_surfaces_at_Alert_2000">Denuder measurements of gas and aerosol species above Arctic snow surfaces at Alert 2000</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">Gas and aerosol measurements were made during the Polar Sunrise Experiment 2000 at Alert, Nunavut (Canada), using two independent denuder/filter systems for sampling and subsequent analysis by ion chromatography. Twelve to forty-eight... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_4189325" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">Gas and aerosol measurements were made during the Polar Sunrise Experiment 2000 at Alert, Nunavut (Canada), using two independent denuder/filter systems for sampling and subsequent analysis by ion chromatography. Twelve to forty-eight hour samples were taken during a winter (9-21 February 2000) and a spring (17 April-5 May 2000) campaign. During the spring campaign, samples were taken at two different heights above the snow surface to investigate concentration differences. Total particulate NO 3 À is the most abundant inorganic nitrogen compound during Arctic springtime (mean 137.4 ng m À3 ). The NO 3 À fluxes were calculated above the snow surface to help identify processes that control snow-atmosphere exchange of reactive nitrogen compounds. We suggest that the observed fluxes of coarse particle NO 3 À via snow deposition may contribute to the nitrogen inventory in the snow surface. Measurements of surface snow provide experimental data that constrain the contribution of dry deposition of coarse particle NO 3 À to o7%. Wet deposition in falling snow appears to be the major contributor to the nitrate input to the snow. r</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/4189325" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="e6b08a5ac1e2c03d8284d01fe18590bf" rel="nofollow" data-download="{"attachment_id":32476374,"asset_id":4189325,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/32476374/download_file?st=MTc0MDkzMDYzMSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="3737942" href="https://cnr-it.academia.edu/AntoniettaIanniello">Antonietta Ianniello</a><script data-card-contents-for-user="3737942" type="text/json">{"id":3737942,"first_name":"Antonietta","last_name":"Ianniello","domain_name":"cnr-it","page_name":"AntoniettaIanniello","display_name":"Antonietta Ianniello","profile_url":"https://cnr-it.academia.edu/AntoniettaIanniello?f_ri=15372","photo":"https://0.academia-photos.com/3737942/1342654/1660357/s65_antonietta.ianniello.jpg"}</script></span></span></li><li class="js-paper-rank-work_4189325 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="4189325"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 4189325, container: ".js-paper-rank-work_4189325", }); 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$(".js-view-count[data-work-id=4189325]").text(description); $(".js-view-count-work_4189325").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_4189325").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="4189325"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">10</a>  </div><span class="InlineList-item-text u-textTruncate u-pl10x"><a class="InlineList-item-text" data-has-card-for-ri="55" rel="nofollow" href="https://www.academia.edu/Documents/in/Environmental_Engineering">Environmental Engineering</a>, <script data-card-contents-for-ri="55" type="text/json">{"id":55,"name":"Environmental Engineering","url":"https://www.academia.edu/Documents/in/Environmental_Engineering?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="2442" rel="nofollow" href="https://www.academia.edu/Documents/in/Atmospheric_Science">Atmospheric Science</a>, <script data-card-contents-for-ri="2442" type="text/json">{"id":2442,"name":"Atmospheric Science","url":"https://www.academia.edu/Documents/in/Atmospheric_Science?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="15372" rel="nofollow" href="https://www.academia.edu/Documents/in/Ion_Chromatography">Ion Chromatography</a>, <script data-card-contents-for-ri="15372" type="text/json">{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="60285" rel="nofollow" href="https://www.academia.edu/Documents/in/Atmospheric_sciences">Atmospheric sciences</a><script data-card-contents-for-ri="60285" type="text/json">{"id":60285,"name":"Atmospheric sciences","url":"https://www.academia.edu/Documents/in/Atmospheric_sciences?f_ri=15372","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=4189325]'), work: {"id":4189325,"title":"Denuder measurements of gas and aerosol species above Arctic snow surfaces at Alert 2000","created_at":"2013-08-07T01:50:38.498-07:00","url":"https://www.academia.edu/4189325/Denuder_measurements_of_gas_and_aerosol_species_above_Arctic_snow_surfaces_at_Alert_2000?f_ri=15372","dom_id":"work_4189325","summary":"Gas and aerosol measurements were made during the Polar Sunrise Experiment 2000 at Alert, Nunavut (Canada), using two independent denuder/filter systems for sampling and subsequent analysis by ion chromatography. Twelve to forty-eight hour samples were taken during a winter (9-21 February 2000) and a spring (17 April-5 May 2000) campaign. During the spring campaign, samples were taken at two different heights above the snow surface to investigate concentration differences. Total particulate NO 3 À is the most abundant inorganic nitrogen compound during Arctic springtime (mean 137.4 ng m À3 ). The NO 3 À fluxes were calculated above the snow surface to help identify processes that control snow-atmosphere exchange of reactive nitrogen compounds. We suggest that the observed fluxes of coarse particle NO 3 À via snow deposition may contribute to the nitrogen inventory in the snow surface. Measurements of surface snow provide experimental data that constrain the contribution of dry deposition of coarse particle NO 3 À to o7%. Wet deposition in falling snow appears to be the major contributor to the nitrate input to the snow. r","downloadable_attachments":[{"id":32476374,"asset_id":4189325,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":3737942,"first_name":"Antonietta","last_name":"Ianniello","domain_name":"cnr-it","page_name":"AntoniettaIanniello","display_name":"Antonietta Ianniello","profile_url":"https://cnr-it.academia.edu/AntoniettaIanniello?f_ri=15372","photo":"https://0.academia-photos.com/3737942/1342654/1660357/s65_antonietta.ianniello.jpg"}],"research_interests":[{"id":55,"name":"Environmental Engineering","url":"https://www.academia.edu/Documents/in/Environmental_Engineering?f_ri=15372","nofollow":true},{"id":2442,"name":"Atmospheric Science","url":"https://www.academia.edu/Documents/in/Atmospheric_Science?f_ri=15372","nofollow":true},{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true},{"id":60285,"name":"Atmospheric sciences","url":"https://www.academia.edu/Documents/in/Atmospheric_sciences?f_ri=15372","nofollow":true},{"id":127004,"name":"Wet Deposition","url":"https://www.academia.edu/Documents/in/Wet_Deposition?f_ri=15372"},{"id":151091,"name":"Nitrogen","url":"https://www.academia.edu/Documents/in/Nitrogen?f_ri=15372"},{"id":668887,"name":"NITRIC ACID","url":"https://www.academia.edu/Documents/in/NITRIC_ACID?f_ri=15372"},{"id":965105,"name":"Surface Measurement","url":"https://www.academia.edu/Documents/in/Surface_Measurement?f_ri=15372"},{"id":1120502,"name":"Experimental Data","url":"https://www.academia.edu/Documents/in/Experimental_Data?f_ri=15372"},{"id":2490855,"name":"Dry Deposition","url":"https://www.academia.edu/Documents/in/Dry_Deposition?f_ri=15372"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_13608721 coauthored" data-work_id="13608721" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/13608721/Urea_nitrate_an_exceptionally_easy_to_make_improvised_explosive_studies_towards_trace_characterization">Urea nitrate, an exceptionally easy-to-make improvised explosive: studies towards trace characterization</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">Urea nitrate is a powerful improvised explosive, frequently used by terrorists in the Israeli arena. It was also used in the first World Trade Center bombing in New York in February 1993. It is difficult to identify urea nitrate in... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_13608721" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">Urea nitrate is a powerful improvised explosive, frequently used by terrorists in the Israeli arena. It was also used in the first World Trade Center bombing in New York in February 1993. It is difficult to identify urea nitrate in post-explosion debris, since only a very small fraction survives the blast. Also, in the presence of water, it readily decomposes to its original components, urea and nitric acid. It is suspected that post-blast debris of urea nitrate can be confused with ammonium nitrate, the main solid product of urea nitrate thermal decomposition. In a comprehensive study towards identification of urea nitrate in post-blast traces, a spectrophotometric technique for quantitative determination of urea nitrate was developed, and conditions were found for extraction and separation of un-exploded traces of urea nitrate with minimal decomposition. Nevertheless, out of 28 samples collected from a series of three controlled firings of urea nitrate charges, only one gave the typical adduct ion by liquid chromatography/mass spectrometry analysis. We found that urea nitrate can be extracted from solid mixtures to organic solvents by using Crown ethers as "host compounds." The adducts thus formed are solid, crystalline compounds that can be characterized by microanalysis and spectroscopic techniques.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/13608721" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="3c39eb6f8f243cf723126be96e40a84d" rel="nofollow" data-download="{"attachment_id":45157859,"asset_id":13608721,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/45157859/download_file?st=MTc0MDkzMDYzMSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="32781565" href="https://independent.academia.edu/JosephAlmog">Joseph Almog</a><script data-card-contents-for-user="32781565" type="text/json">{"id":32781565,"first_name":"Joseph","last_name":"Almog","domain_name":"independent","page_name":"JosephAlmog","display_name":"Joseph Almog","profile_url":"https://independent.academia.edu/JosephAlmog?f_ri=15372","photo":"/images/s65_no_pic.png"}</script></span></span><span class="u-displayInlineBlock InlineList-item-text"> and <span class="u-textDecorationUnderline u-clickable InlineList-item-text js-work-more-authors-13608721">+1</span><div class="hidden js-additional-users-13608721"><div><span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a href="https://independent.academia.edu/RinatRozin">Rinat Rozin</a></span></div></div></span><script>(function(){ var popoverSettings = { el: $('.js-work-more-authors-13608721'), placement: 'bottom', hide_delay: 200, html: true, content: function(){ return $('.js-additional-users-13608721').html(); 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container.find('.percentile-widget').removeClass('hidden'); }); });</script></li><li class="js-view-count-work_13608721 InlineList-item InlineList-item--bordered hidden"><div><span><span class="js-view-count view-count u-mr2x" data-work-id="13608721"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 13608721; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=13608721]").text(description); $(".js-view-count-work_13608721").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_13608721").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="13608721"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">22</a>  </div><span class="InlineList-item-text u-textTruncate u-pl10x"><a class="InlineList-item-text" data-has-card-for-ri="48" rel="nofollow" href="https://www.academia.edu/Documents/in/Engineering">Engineering</a>, <script data-card-contents-for-ri="48" type="text/json">{"id":48,"name":"Engineering","url":"https://www.academia.edu/Documents/in/Engineering?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="539" rel="nofollow" href="https://www.academia.edu/Documents/in/Forensics">Forensics</a>, <script data-card-contents-for-ri="539" type="text/json">{"id":539,"name":"Forensics","url":"https://www.academia.edu/Documents/in/Forensics?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="2215" rel="nofollow" href="https://www.academia.edu/Documents/in/Water">Water</a>, <script data-card-contents-for-ri="2215" type="text/json">{"id":2215,"name":"Water","url":"https://www.academia.edu/Documents/in/Water?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="5769" rel="nofollow" href="https://www.academia.edu/Documents/in/Mass_Spectrometry">Mass Spectrometry</a><script data-card-contents-for-ri="5769" type="text/json">{"id":5769,"name":"Mass Spectrometry","url":"https://www.academia.edu/Documents/in/Mass_Spectrometry?f_ri=15372","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=13608721]'), work: {"id":13608721,"title":"Urea nitrate, an exceptionally easy-to-make improvised explosive: studies towards trace characterization","created_at":"2015-07-04T01:04:37.807-07:00","url":"https://www.academia.edu/13608721/Urea_nitrate_an_exceptionally_easy_to_make_improvised_explosive_studies_towards_trace_characterization?f_ri=15372","dom_id":"work_13608721","summary":"Urea nitrate is a powerful improvised explosive, frequently used by terrorists in the Israeli arena. It was also used in the first World Trade Center bombing in New York in February 1993. It is difficult to identify urea nitrate in post-explosion debris, since only a very small fraction survives the blast. Also, in the presence of water, it readily decomposes to its original components, urea and nitric acid. It is suspected that post-blast debris of urea nitrate can be confused with ammonium nitrate, the main solid product of urea nitrate thermal decomposition. In a comprehensive study towards identification of urea nitrate in post-blast traces, a spectrophotometric technique for quantitative determination of urea nitrate was developed, and conditions were found for extraction and separation of un-exploded traces of urea nitrate with minimal decomposition. Nevertheless, out of 28 samples collected from a series of three controlled firings of urea nitrate charges, only one gave the typical adduct ion by liquid chromatography/mass spectrometry analysis. We found that urea nitrate can be extracted from solid mixtures to organic solvents by using Crown ethers as \"host compounds.\" The adducts thus formed are solid, crystalline compounds that can be characterized by microanalysis and spectroscopic techniques.","downloadable_attachments":[{"id":45157859,"asset_id":13608721,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":32781565,"first_name":"Joseph","last_name":"Almog","domain_name":"independent","page_name":"JosephAlmog","display_name":"Joseph Almog","profile_url":"https://independent.academia.edu/JosephAlmog?f_ri=15372","photo":"/images/s65_no_pic.png"},{"id":48088610,"first_name":"Rinat","last_name":"Rozin","domain_name":"independent","page_name":"RinatRozin","display_name":"Rinat Rozin","profile_url":"https://independent.academia.edu/RinatRozin?f_ri=15372","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":48,"name":"Engineering","url":"https://www.academia.edu/Documents/in/Engineering?f_ri=15372","nofollow":true},{"id":539,"name":"Forensics","url":"https://www.academia.edu/Documents/in/Forensics?f_ri=15372","nofollow":true},{"id":2215,"name":"Water","url":"https://www.academia.edu/Documents/in/Water?f_ri=15372","nofollow":true},{"id":5769,"name":"Mass Spectrometry","url":"https://www.academia.edu/Documents/in/Mass_Spectrometry?f_ri=15372","nofollow":true},{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372"},{"id":32910,"name":"Sample Preparation","url":"https://www.academia.edu/Documents/in/Sample_Preparation?f_ri=15372"},{"id":37434,"name":"Quantitative analysis","url":"https://www.academia.edu/Documents/in/Quantitative_analysis?f_ri=15372"},{"id":47884,"name":"Biological Sciences","url":"https://www.academia.edu/Documents/in/Biological_Sciences?f_ri=15372"},{"id":139599,"name":"Microanalysis","url":"https://www.academia.edu/Documents/in/Microanalysis?f_ri=15372"},{"id":221270,"name":"World Trade Center","url":"https://www.academia.edu/Documents/in/World_Trade_Center?f_ri=15372"},{"id":260118,"name":"CHEMICAL SCIENCES","url":"https://www.academia.edu/Documents/in/CHEMICAL_SCIENCES?f_ri=15372"},{"id":280947,"name":"Ammonium Nitrate","url":"https://www.academia.edu/Documents/in/Ammonium_Nitrate?f_ri=15372"},{"id":326380,"name":"Liquid Chromatography / Electrospray Ionization Mass Spectrometry","url":"https://www.academia.edu/Documents/in/Liquid_Chromatography_Electrospray_Ionization_Mass_Spectrometry?f_ri=15372"},{"id":398287,"name":"Liquid Chromatography","url":"https://www.academia.edu/Documents/in/Liquid_Chromatography?f_ri=15372"},{"id":459820,"name":"Ether","url":"https://www.academia.edu/Documents/in/Ether?f_ri=15372"},{"id":483677,"name":"Thermal Decomposition","url":"https://www.academia.edu/Documents/in/Thermal_Decomposition?f_ri=15372"},{"id":621932,"name":"Analytical and Bioanalytical Chemistry","url":"https://www.academia.edu/Documents/in/Analytical_and_Bioanalytical_Chemistry?f_ri=15372"},{"id":641216,"name":"Quantitative Analysis","url":"https://www.academia.edu/Documents/in/Quantitative_Analysis-1?f_ri=15372"},{"id":668887,"name":"NITRIC ACID","url":"https://www.academia.edu/Documents/in/NITRIC_ACID?f_ri=15372"},{"id":952991,"name":"Spectroscopic Techniques","url":"https://www.academia.edu/Documents/in/Spectroscopic_Techniques?f_ri=15372"},{"id":963365,"name":"LC MS","url":"https://www.academia.edu/Documents/in/LC_MS-1?f_ri=15372"},{"id":1144563,"name":"Explosives","url":"https://www.academia.edu/Documents/in/Explosives?f_ri=15372"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_17889137" data-work_id="17889137" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/17889137/Analysis_of_perchlorate_in_foods_and_beverages_by_ion_chromatography_coupled_with_tandem_mass_spectrometry_IC_ESI_MS_MS_">Analysis of perchlorate in foods and beverages by ion chromatography coupled with tandem mass spectrometry (IC-ESI-MS/MS)</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">A new IC-ESI-MS/MS method, with simple sample preparation procedure, has been developed for quantification and confirmation of perchlorate (ClO 4 − ) anions in water, fresh and canned food, wine and beer samples at low part-per-trillion... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_17889137" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">A new IC-ESI-MS/MS method, with simple sample preparation procedure, has been developed for quantification and confirmation of perchlorate (ClO 4 − ) anions in water, fresh and canned food, wine and beer samples at low part-per-trillion (ng l −1 ) levels. To the best of our knowledge, this is the first time an analytical method is used for determination of perchlorate in wine and beer samples. The IC-ESI-MS/MS instrumentation consisted of an ICS-2500 ion chromatography (IC) system coupled to either an API 2000 TM or an API 3200 TM mass spectrometer. The IC-ESI-MS/MS system was optimized to monitor two pairs of precursor and fragment ion transitions, i.e., multiple reaction monitoring (MRM). All samples had oxygen-18 isotope labeled perchlorate internal standard (ISTD) added prior to extraction. Chlorine isotope ratio ( 35 Cl/ 37 Cl) was used as a confirmation tool. The transition of 35 Cl 16 O 4 − (m/z 98.9) into 35 Cl 16 O 3 − (m/z 82.9) was monitored for quantifying the main analyte; the transition of 37 Cl 16 O 4 − (m/z 100.9) into 37 Cl 16 O 3 − (m/z 84.9) was monitored for examining a proper isotopic abundance ratio of 35 Cl/ 37 Cl; and the transition of 35 Cl 18 O 4 − (m/z 107.0) into 35 Cl 18 O 3 − (m/z 89.0) was monitored for quantifying the internal standard. The minimum detection limit (MDL) for this method in de-ionized water is 5 ng l −1 (ppt) using the API 2000 TM mass spectrometer and 0.5 ng l −1 using the API 3200 TM mass spectrometer. Over 350 food and beverage samples were analyzed mostly in triplicate. Except for four, all samples were found to contain measurable amounts of perchlorate. The levels found ranged from 5 ng l −1 to 463.5 ± 6.36 g kg −1 using MRM 98.9 → 82.9 and 100 l injection.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/17889137" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="21946087a254c85a3a381a655fc1a0ec" rel="nofollow" data-download="{"attachment_id":39764063,"asset_id":17889137,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/39764063/download_file?st=MTc0MDkzMDYzMSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="37800856" href="https://yorku.academia.edu/TakeoSakuma">Takeo Sakuma</a><script data-card-contents-for-user="37800856" type="text/json">{"id":37800856,"first_name":"Takeo","last_name":"Sakuma","domain_name":"yorku","page_name":"TakeoSakuma","display_name":"Takeo Sakuma","profile_url":"https://yorku.academia.edu/TakeoSakuma?f_ri=15372","photo":"/images/s65_no_pic.png"}</script></span></span></li><li class="js-paper-rank-work_17889137 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="17889137"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 17889137, container: ".js-paper-rank-work_17889137", }); 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$(".js-view-count[data-work-id=17889137]").text(description); $(".js-view-count-work_17889137").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_17889137").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="17889137"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">6</a>  </div><span class="InlineList-item-text u-textTruncate u-pl9x"><a class="InlineList-item-text" data-has-card-for-ri="524" rel="nofollow" href="https://www.academia.edu/Documents/in/Analytical_Chemistry">Analytical Chemistry</a>, <script data-card-contents-for-ri="524" type="text/json">{"id":524,"name":"Analytical Chemistry","url":"https://www.academia.edu/Documents/in/Analytical_Chemistry?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="15372" rel="nofollow" href="https://www.academia.edu/Documents/in/Ion_Chromatography">Ion Chromatography</a>, <script data-card-contents-for-ri="15372" type="text/json">{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="32910" rel="nofollow" href="https://www.academia.edu/Documents/in/Sample_Preparation">Sample Preparation</a>, <script data-card-contents-for-ri="32910" type="text/json">{"id":32910,"name":"Sample Preparation","url":"https://www.academia.edu/Documents/in/Sample_Preparation?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="163275" rel="nofollow" href="https://www.academia.edu/Documents/in/Tandem_Mass_Spectrometry">Tandem Mass Spectrometry</a><script data-card-contents-for-ri="163275" type="text/json">{"id":163275,"name":"Tandem Mass Spectrometry","url":"https://www.academia.edu/Documents/in/Tandem_Mass_Spectrometry?f_ri=15372","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=17889137]'), work: {"id":17889137,"title":"Analysis of perchlorate in foods and beverages by ion chromatography coupled with tandem mass spectrometry (IC-ESI-MS/MS)","created_at":"2015-11-06T19:32:38.897-08:00","url":"https://www.academia.edu/17889137/Analysis_of_perchlorate_in_foods_and_beverages_by_ion_chromatography_coupled_with_tandem_mass_spectrometry_IC_ESI_MS_MS_?f_ri=15372","dom_id":"work_17889137","summary":"A new IC-ESI-MS/MS method, with simple sample preparation procedure, has been developed for quantification and confirmation of perchlorate (ClO 4 − ) anions in water, fresh and canned food, wine and beer samples at low part-per-trillion (ng l −1 ) levels. To the best of our knowledge, this is the first time an analytical method is used for determination of perchlorate in wine and beer samples. The IC-ESI-MS/MS instrumentation consisted of an ICS-2500 ion chromatography (IC) system coupled to either an API 2000 TM or an API 3200 TM mass spectrometer. The IC-ESI-MS/MS system was optimized to monitor two pairs of precursor and fragment ion transitions, i.e., multiple reaction monitoring (MRM). All samples had oxygen-18 isotope labeled perchlorate internal standard (ISTD) added prior to extraction. Chlorine isotope ratio ( 35 Cl/ 37 Cl) was used as a confirmation tool. The transition of 35 Cl 16 O 4 − (m/z 98.9) into 35 Cl 16 O 3 − (m/z 82.9) was monitored for quantifying the main analyte; the transition of 37 Cl 16 O 4 − (m/z 100.9) into 37 Cl 16 O 3 − (m/z 84.9) was monitored for examining a proper isotopic abundance ratio of 35 Cl/ 37 Cl; and the transition of 35 Cl 18 O 4 − (m/z 107.0) into 35 Cl 18 O 3 − (m/z 89.0) was monitored for quantifying the internal standard. The minimum detection limit (MDL) for this method in de-ionized water is 5 ng l −1 (ppt) using the API 2000 TM mass spectrometer and 0.5 ng l −1 using the API 3200 TM mass spectrometer. Over 350 food and beverage samples were analyzed mostly in triplicate. Except for four, all samples were found to contain measurable amounts of perchlorate. The levels found ranged from 5 ng l −1 to 463.5 ± 6.36 g kg −1 using MRM 98.9 → 82.9 and 100 l injection.","downloadable_attachments":[{"id":39764063,"asset_id":17889137,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":37800856,"first_name":"Takeo","last_name":"Sakuma","domain_name":"yorku","page_name":"TakeoSakuma","display_name":"Takeo Sakuma","profile_url":"https://yorku.academia.edu/TakeoSakuma?f_ri=15372","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":524,"name":"Analytical Chemistry","url":"https://www.academia.edu/Documents/in/Analytical_Chemistry?f_ri=15372","nofollow":true},{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true},{"id":32910,"name":"Sample Preparation","url":"https://www.academia.edu/Documents/in/Sample_Preparation?f_ri=15372","nofollow":true},{"id":163275,"name":"Tandem Mass Spectrometry","url":"https://www.academia.edu/Documents/in/Tandem_Mass_Spectrometry?f_ri=15372","nofollow":true},{"id":330839,"name":"Analytical Method","url":"https://www.academia.edu/Documents/in/Analytical_Method?f_ri=15372"},{"id":1826013,"name":"Mass Spectrometer","url":"https://www.academia.edu/Documents/in/Mass_Spectrometer?f_ri=15372"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_14679388" data-work_id="14679388" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/14679388/Sampling_and_Analysis_of_Quaternary_Ammonium_Compounds_QACs_Traces_in_Indoor_Atmosphere">Sampling and Analysis of Quaternary Ammonium Compounds (QACs) Traces in Indoor Atmosphere</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">Quaternary Ammonium Compounds (QACs) are widely found in disinfectants used in hospitals. Benzalkonium chloride (BAC) and didecyldimethylammonium chloride (DDAC) predominate in the disinfecting formulations. These compounds are strong... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_14679388" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">Quaternary Ammonium Compounds (QACs) are widely found in disinfectants used in hospitals. Benzalkonium chloride (BAC) and didecyldimethylammonium chloride (DDAC) predominate in the disinfecting formulations. These compounds are strong irritants and can play a role in the induction of Occupational Asthma among the professionals of health and cleaning. In order to evaluate the potential health effect of these quaternary ammonium compounds to hospital employers, the development of an analytical method for their quantification in indoor air was developed. DDAC aerosols are trapped by adsorption on XAD-2 resin SKC® tube. The air in hospital buildings was sampled using a constant debit Gillian® pump at a flow of 1.0 l/min (±5%). Ion Chromatography (IC) was chosen for the analysis of DDAC especially for its high sensitivity and specificity. The Limit of Detection (LOD) by IC for DDAC is 0.56 μg/ml. Therefore the LOD of atmospheric DDAC is 28 μg/m 3 with an air volume of 100 l and a desorption volume of 5 ml. All DDAC air samples were lower than the LOD of the analytical method by IC. Under the standard conditions of use of the disinfecting solutions (Surfa-nios®, Ampholysine Plus® and Amphospray 41®), the insignificant volatility of DDAC would not seem to be able to contaminate the indoor hospital atmosphere during the disinfection process. However, the DDAC can contaminate working atmospheres if it is put in suspension by aerosolisation.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/14679388" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="d19fd00eab16bbbc2913df65b326d64b" rel="nofollow" data-download="{"attachment_id":43983782,"asset_id":14679388,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/43983782/download_file?st=MTc0MDkzMDYzMSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="33613548" href="https://unistra.academia.edu/MauriceMillet">Maurice Millet</a><script data-card-contents-for-user="33613548" type="text/json">{"id":33613548,"first_name":"Maurice","last_name":"Millet","domain_name":"unistra","page_name":"MauriceMillet","display_name":"Maurice Millet","profile_url":"https://unistra.academia.edu/MauriceMillet?f_ri=15372","photo":"/images/s65_no_pic.png"}</script></span></span></li><li class="js-paper-rank-work_14679388 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="14679388"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 14679388, container: ".js-paper-rank-work_14679388", }); });</script></li><li class="js-percentile-work_14679388 InlineList-item InlineList-item--bordered hidden u-tcGrayDark"><span class="percentile-widget hidden"><span class="u-mr2x percentile-widget" style="display: none">•</span><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 14679388; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-percentile-work_14679388"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></li><li class="js-view-count-work_14679388 InlineList-item InlineList-item--bordered hidden"><div><span><span class="js-view-count view-count u-mr2x" data-work-id="14679388"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 14679388; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=14679388]").text(description); $(".js-view-count-work_14679388").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_14679388").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="14679388"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">14</a>  </div><span class="InlineList-item-text u-textTruncate u-pl10x"><a class="InlineList-item-text" data-has-card-for-ri="15372" rel="nofollow" href="https://www.academia.edu/Documents/in/Ion_Chromatography">Ion Chromatography</a>, <script data-card-contents-for-ri="15372" type="text/json">{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="28235" rel="nofollow" href="https://www.academia.edu/Documents/in/Multidisciplinary">Multidisciplinary</a>, <script data-card-contents-for-ri="28235" type="text/json">{"id":28235,"name":"Multidisciplinary","url":"https://www.academia.edu/Documents/in/Multidisciplinary?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="60056" rel="nofollow" href="https://www.academia.edu/Documents/in/Air_Sampling">Air Sampling</a>, <script data-card-contents-for-ri="60056" type="text/json">{"id":60056,"name":"Air Sampling","url":"https://www.academia.edu/Documents/in/Air_Sampling?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="65392" rel="nofollow" href="https://www.academia.edu/Documents/in/Occupational_Asthma">Occupational Asthma</a><script data-card-contents-for-ri="65392" type="text/json">{"id":65392,"name":"Occupational Asthma","url":"https://www.academia.edu/Documents/in/Occupational_Asthma?f_ri=15372","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=14679388]'), work: {"id":14679388,"title":"Sampling and Analysis of Quaternary Ammonium Compounds (QACs) Traces in Indoor Atmosphere","created_at":"2015-08-05T00:14:49.245-07:00","url":"https://www.academia.edu/14679388/Sampling_and_Analysis_of_Quaternary_Ammonium_Compounds_QACs_Traces_in_Indoor_Atmosphere?f_ri=15372","dom_id":"work_14679388","summary":"Quaternary Ammonium Compounds (QACs) are widely found in disinfectants used in hospitals. Benzalkonium chloride (BAC) and didecyldimethylammonium chloride (DDAC) predominate in the disinfecting formulations. These compounds are strong irritants and can play a role in the induction of Occupational Asthma among the professionals of health and cleaning. In order to evaluate the potential health effect of these quaternary ammonium compounds to hospital employers, the development of an analytical method for their quantification in indoor air was developed. DDAC aerosols are trapped by adsorption on XAD-2 resin SKC® tube. The air in hospital buildings was sampled using a constant debit Gillian® pump at a flow of 1.0 l/min (±5%). Ion Chromatography (IC) was chosen for the analysis of DDAC especially for its high sensitivity and specificity. The Limit of Detection (LOD) by IC for DDAC is 0.56 μg/ml. Therefore the LOD of atmospheric DDAC is 28 μg/m 3 with an air volume of 100 l and a desorption volume of 5 ml. All DDAC air samples were lower than the LOD of the analytical method by IC. Under the standard conditions of use of the disinfecting solutions (Surfa-nios®, Ampholysine Plus® and Amphospray 41®), the insignificant volatility of DDAC would not seem to be able to contaminate the indoor hospital atmosphere during the disinfection process. However, the DDAC can contaminate working atmospheres if it is put in suspension by aerosolisation.","downloadable_attachments":[{"id":43983782,"asset_id":14679388,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":33613548,"first_name":"Maurice","last_name":"Millet","domain_name":"unistra","page_name":"MauriceMillet","display_name":"Maurice Millet","profile_url":"https://unistra.academia.edu/MauriceMillet?f_ri=15372","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true},{"id":28235,"name":"Multidisciplinary","url":"https://www.academia.edu/Documents/in/Multidisciplinary?f_ri=15372","nofollow":true},{"id":60056,"name":"Air Sampling","url":"https://www.academia.edu/Documents/in/Air_Sampling?f_ri=15372","nofollow":true},{"id":65392,"name":"Occupational Asthma","url":"https://www.academia.edu/Documents/in/Occupational_Asthma?f_ri=15372","nofollow":true},{"id":246560,"name":"High Pressure Liquid Chromatography","url":"https://www.academia.edu/Documents/in/High_Pressure_Liquid_Chromatography?f_ri=15372"},{"id":282637,"name":"Environmental monitoring and assessment","url":"https://www.academia.edu/Documents/in/Environmental_monitoring_and_assessment?f_ri=15372"},{"id":295244,"name":"Indoor air pollution","url":"https://www.academia.edu/Documents/in/Indoor_air_pollution?f_ri=15372"},{"id":330839,"name":"Analytical Method","url":"https://www.academia.edu/Documents/in/Analytical_Method?f_ri=15372"},{"id":955937,"name":"Quaternary Ammonium Compounds","url":"https://www.academia.edu/Documents/in/Quaternary_Ammonium_Compounds?f_ri=15372"},{"id":962638,"name":"High Sensitivity","url":"https://www.academia.edu/Documents/in/High_Sensitivity?f_ri=15372"},{"id":997161,"name":"Health Effect","url":"https://www.academia.edu/Documents/in/Health_Effect?f_ri=15372"},{"id":1133132,"name":"Environmental","url":"https://www.academia.edu/Documents/in/Environmental?f_ri=15372"},{"id":1656539,"name":"Air Pollutants","url":"https://www.academia.edu/Documents/in/Air_Pollutants?f_ri=15372"},{"id":1767464,"name":"Indoor air","url":"https://www.academia.edu/Documents/in/Indoor_air?f_ri=15372"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_29962040" data-work_id="29962040" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/29962040/Determination_of_nitrogen_species_Nitrate_Nitrite_and_Ammonia_Ions_in_environmental_samples_by_ion_chromatography">Determination of nitrogen species (Nitrate, Nitrite and Ammonia Ions) in environmental samples by ion chromatography</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">The necessity of environmental protection has stimulated development of all kinds of methods allowing determination of different pollutants in different elements of the natural environment, including methods for determining inorganic... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_29962040" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">The necessity of environmental protection has stimulated development of all kinds of methods allowing determination of different pollutants in different elements of the natural environment, including methods for determining inorganic nitrogen ions. Many of the methods used so far have proven insufficiently sensitive, selective or accurate and recently much attention has been paid to ion chromatography, which seems most promising. This paper reviews applications of ion chromatography for determining nitrate, nitrite and ammonium ions in environmental samples and in food products along with ISO standards and the relevant methods proposed by the US EPA and Dionex.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/29962040" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="6d70f3fb77b2028fd5bc5a573ddbba87" rel="nofollow" data-download="{"attachment_id":50418978,"asset_id":29962040,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/50418978/download_file?st=MTc0MDkzMDYzMSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="56904423" href="https://independent.academia.edu/RajmundMichalski">Rajmund Michalski</a><script data-card-contents-for-user="56904423" type="text/json">{"id":56904423,"first_name":"Rajmund","last_name":"Michalski","domain_name":"independent","page_name":"RajmundMichalski","display_name":"Rajmund Michalski","profile_url":"https://independent.academia.edu/RajmundMichalski?f_ri=15372","photo":"/images/s65_no_pic.png"}</script></span></span></li><li class="js-paper-rank-work_29962040 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="29962040"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 29962040, container: ".js-paper-rank-work_29962040", }); 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$(".js-view-count[data-work-id=29962040]").text(description); $(".js-view-count-work_29962040").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_29962040").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="29962040"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">5</a>  </div><span class="InlineList-item-text u-textTruncate u-pl9x"><a class="InlineList-item-text" data-has-card-for-ri="55" rel="nofollow" href="https://www.academia.edu/Documents/in/Environmental_Engineering">Environmental Engineering</a>, <script data-card-contents-for-ri="55" type="text/json">{"id":55,"name":"Environmental Engineering","url":"https://www.academia.edu/Documents/in/Environmental_Engineering?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="523" rel="nofollow" href="https://www.academia.edu/Documents/in/Chemistry">Chemistry</a>, <script data-card-contents-for-ri="523" type="text/json">{"id":523,"name":"Chemistry","url":"https://www.academia.edu/Documents/in/Chemistry?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="15372" rel="nofollow" href="https://www.academia.edu/Documents/in/Ion_Chromatography">Ion Chromatography</a>, <script data-card-contents-for-ri="15372" type="text/json">{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="122404" rel="nofollow" href="https://www.academia.edu/Documents/in/Nitrate">Nitrate</a><script data-card-contents-for-ri="122404" type="text/json">{"id":122404,"name":"Nitrate","url":"https://www.academia.edu/Documents/in/Nitrate?f_ri=15372","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=29962040]'), work: {"id":29962040,"title":"Determination of nitrogen species (Nitrate, Nitrite and Ammonia Ions) in environmental samples by ion chromatography","created_at":"2016-11-19T08:12:06.696-08:00","url":"https://www.academia.edu/29962040/Determination_of_nitrogen_species_Nitrate_Nitrite_and_Ammonia_Ions_in_environmental_samples_by_ion_chromatography?f_ri=15372","dom_id":"work_29962040","summary":"The necessity of environmental protection has stimulated development of all kinds of methods allowing determination of different pollutants in different elements of the natural environment, including methods for determining inorganic nitrogen ions. Many of the methods used so far have proven insufficiently sensitive, selective or accurate and recently much attention has been paid to ion chromatography, which seems most promising. This paper reviews applications of ion chromatography for determining nitrate, nitrite and ammonium ions in environmental samples and in food products along with ISO standards and the relevant methods proposed by the US EPA and Dionex.","downloadable_attachments":[{"id":50418978,"asset_id":29962040,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":56904423,"first_name":"Rajmund","last_name":"Michalski","domain_name":"independent","page_name":"RajmundMichalski","display_name":"Rajmund Michalski","profile_url":"https://independent.academia.edu/RajmundMichalski?f_ri=15372","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":55,"name":"Environmental Engineering","url":"https://www.academia.edu/Documents/in/Environmental_Engineering?f_ri=15372","nofollow":true},{"id":523,"name":"Chemistry","url":"https://www.academia.edu/Documents/in/Chemistry?f_ri=15372","nofollow":true},{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true},{"id":122404,"name":"Nitrate","url":"https://www.academia.edu/Documents/in/Nitrate?f_ri=15372","nofollow":true},{"id":162978,"name":"Nitrite","url":"https://www.academia.edu/Documents/in/Nitrite?f_ri=15372"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_5642671" data-work_id="5642671" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/5642671/Stability_Indicating_RP_HPLC_Method_Development_and_Validation_of_Norfloxacin">Stability Indicating RP-HPLC Method Development and Validation of Norfloxacin</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">A stability indicating high performance liquid chromatographic method has been developed for the determination of norfloxacin. Optimum separation was achieved in less than 10 minutes using Phenomenex ODS C 18 (250x 4.6mm packed with 5µ)... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_5642671" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">A stability indicating high performance liquid chromatographic method has been developed for the determination of norfloxacin. Optimum separation was achieved in less than 10 minutes using Phenomenex ODS C 18 (250x 4.6mm packed with 5µ) column. The analyte was resolved by using a mobile phase 20 mmol L -1 ammonium formate and acetonitrile (70:30) pH adjusted to 4.0 with formic acid at flow rate 1 ml/min on a isocratic high performance liquid chromatographic system at a wavelength of 280 nm. The method was validated according to the ICH guidelines with respect to specificity, linearity, accuracy, precision, ruggedness and robustness and can be successfully applied for determination of this drug in commercial tablets. For stress studies the drug was subjected to acid, alkali and neutral hydrolysis, oxidation, dry heat and photolytic degradation. The degradation studies indicated the drug to be susceptible to acid, alkali hydrolysis and oxidative degradation. The analytical conditions and solvent developed provided good resolution within a short analysis time and economic advantages. The proposed method not required highly sophisticated and expensive instrumentation.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/5642671" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="6873bb80ebf4ae38e1b8f0be316fed87" rel="nofollow" data-download="{"attachment_id":32706893,"asset_id":5642671,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/32706893/download_file?st=MTc0MDkzMDYzMSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="7531070" href="https://independent.academia.edu/EditorAJADD">American Journal of Advanced Drug Delivery (AJADD)</a><script data-card-contents-for-user="7531070" type="text/json">{"id":7531070,"first_name":"American Journal of Advanced Drug Delivery","last_name":"(AJADD)","domain_name":"independent","page_name":"EditorAJADD","display_name":"American Journal of Advanced Drug Delivery (AJADD)","profile_url":"https://independent.academia.edu/EditorAJADD?f_ri=15372","photo":"https://0.academia-photos.com/7531070/5915505/6716726/s65_editor.ajadd.jpg"}</script></span></span></li><li class="js-paper-rank-work_5642671 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="5642671"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 5642671, container: ".js-paper-rank-work_5642671", }); 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$(".js-view-count[data-work-id=5642671]").text(description); $(".js-view-count-work_5642671").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_5642671").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="5642671"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">44</a>  </div><span class="InlineList-item-text u-textTruncate u-pl10x"><a class="InlineList-item-text" data-has-card-for-ri="524" rel="nofollow" href="https://www.academia.edu/Documents/in/Analytical_Chemistry">Analytical Chemistry</a>, <script data-card-contents-for-ri="524" type="text/json">{"id":524,"name":"Analytical Chemistry","url":"https://www.academia.edu/Documents/in/Analytical_Chemistry?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="4656" rel="nofollow" href="https://www.academia.edu/Documents/in/Chromatography">Chromatography</a>, <script data-card-contents-for-ri="4656" type="text/json">{"id":4656,"name":"Chromatography","url":"https://www.academia.edu/Documents/in/Chromatography?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="15372" rel="nofollow" href="https://www.academia.edu/Documents/in/Ion_Chromatography">Ion Chromatography</a>, <script data-card-contents-for-ri="15372" type="text/json">{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="15374" rel="nofollow" href="https://www.academia.edu/Documents/in/HPLC-MS_of_environmental_samples">HPLC-MS of environmental samples</a><script data-card-contents-for-ri="15374" type="text/json">{"id":15374,"name":"HPLC-MS of environmental samples","url":"https://www.academia.edu/Documents/in/HPLC-MS_of_environmental_samples?f_ri=15372","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=5642671]'), work: {"id":5642671,"title":"Stability Indicating RP-HPLC Method Development and Validation of Norfloxacin","created_at":"2014-01-08T01:45:03.324-08:00","url":"https://www.academia.edu/5642671/Stability_Indicating_RP_HPLC_Method_Development_and_Validation_of_Norfloxacin?f_ri=15372","dom_id":"work_5642671","summary":"A stability indicating high performance liquid chromatographic method has been developed for the determination of norfloxacin. Optimum separation was achieved in less than 10 minutes using Phenomenex ODS C 18 (250x 4.6mm packed with 5µ) column. The analyte was resolved by using a mobile phase 20 mmol L -1 ammonium formate and acetonitrile (70:30) pH adjusted to 4.0 with formic acid at flow rate 1 ml/min on a isocratic high performance liquid chromatographic system at a wavelength of 280 nm. The method was validated according to the ICH guidelines with respect to specificity, linearity, accuracy, precision, ruggedness and robustness and can be successfully applied for determination of this drug in commercial tablets. For stress studies the drug was subjected to acid, alkali and neutral hydrolysis, oxidation, dry heat and photolytic degradation. The degradation studies indicated the drug to be susceptible to acid, alkali hydrolysis and oxidative degradation. The analytical conditions and solvent developed provided good resolution within a short analysis time and economic advantages. The proposed method not required highly sophisticated and expensive instrumentation.","downloadable_attachments":[{"id":32706893,"asset_id":5642671,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":7531070,"first_name":"American Journal of Advanced Drug Delivery","last_name":"(AJADD)","domain_name":"independent","page_name":"EditorAJADD","display_name":"American Journal of Advanced Drug Delivery (AJADD)","profile_url":"https://independent.academia.edu/EditorAJADD?f_ri=15372","photo":"https://0.academia-photos.com/7531070/5915505/6716726/s65_editor.ajadd.jpg"}],"research_interests":[{"id":524,"name":"Analytical Chemistry","url":"https://www.academia.edu/Documents/in/Analytical_Chemistry?f_ri=15372","nofollow":true},{"id":4656,"name":"Chromatography","url":"https://www.academia.edu/Documents/in/Chromatography?f_ri=15372","nofollow":true},{"id":15372,"name":"Ion 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devlopment","url":"https://www.academia.edu/Documents/in/stability_indicating_RP-HPLC_method_devlopment?f_ri=15372"},{"id":888739,"name":"Quntitative Thin Layer Chromatography","url":"https://www.academia.edu/Documents/in/Quntitative_Thin_Layer_Chromatography?f_ri=15372"},{"id":963353,"name":"Analytical Chemistry HPLC","url":"https://www.academia.edu/Documents/in/Analytical_Chemistry_HPLC?f_ri=15372"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_4816213" data-work_id="4816213" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/4816213/Investigation_of_the_Nitrate_and_Nitrite_Contents_in_Milk_and_Milk_Powder_in_Taiwan">Investigation of the Nitrate and Nitrite Contents in Milk and Milk Powder in Taiwan</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">Cow milk is one of the most important nutrition sources besides breast milk for infants and babies; therefore the detection of nitrate and nitrite in milk is of great importance to the health of infants and babies. Traditional... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_4816213" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">Cow milk is one of the most important nutrition sources besides breast milk for infants and babies; therefore the detection of nitrate and nitrite in milk is of great importance to the health of infants and babies. Traditional colorimetric method for the determination of the nitrate and nitrite concentrations in food is very tedious. In the present study, 100 samples of milk and milk powder were analyzed by ion chromatography to detect nitrate and nitrite simultaneously without tedious preparation steps. The limit of detection (LOD) for nitrate is 0.33 ppm and the LOD for nitrite 0.07 ppm. The measured nitrate concentration in milk ranged from 0.3 -417.7 ppm with an average concentration of 92.7 ppm. The nitrite concentration in all milk samples were below the detection limit. The survey information was as the following: (1) the average nitrate concentration of colostrums fortified milk ranged from 14.1 to 136 ppm. (2) the average nitrate concentration of whey fortified milk ranged from 42.6 to 242.8 ppm.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/4816213" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="70c22047b5093dcb45cd83efbebfcb0a" rel="nofollow" data-download="{"attachment_id":32110544,"asset_id":4816213,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/32110544/download_file?st=MTc0MDkzMDYzMSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="1239949" href="https://meiho.academia.edu/TaiShengYeh">Tai Sheng Yeh</a><script data-card-contents-for-user="1239949" type="text/json">{"id":1239949,"first_name":"Tai Sheng","last_name":"Yeh","domain_name":"meiho","page_name":"TaiShengYeh","display_name":"Tai Sheng Yeh","profile_url":"https://meiho.academia.edu/TaiShengYeh?f_ri=15372","photo":"https://0.academia-photos.com/1239949/2570702/2985344/s65_tai_sheng.yeh.jpg"}</script></span></span></li><li class="js-paper-rank-work_4816213 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="4816213"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 4816213, container: ".js-paper-rank-work_4816213", }); 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$(".js-view-count[data-work-id=4816213]").text(description); $(".js-view-count-work_4816213").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_4816213").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="4816213"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i>  <a class="InlineList-item-text u-positionRelative">5</a>  </div><span class="InlineList-item-text u-textTruncate u-pl9x"><a class="InlineList-item-text" data-has-card-for-ri="145" rel="nofollow" href="https://www.academia.edu/Documents/in/Biochemistry">Biochemistry</a>, <script data-card-contents-for-ri="145" type="text/json">{"id":145,"name":"Biochemistry","url":"https://www.academia.edu/Documents/in/Biochemistry?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="15372" rel="nofollow" href="https://www.academia.edu/Documents/in/Ion_Chromatography">Ion Chromatography</a>, <script data-card-contents-for-ri="15372" type="text/json">{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="122404" rel="nofollow" href="https://www.academia.edu/Documents/in/Nitrate">Nitrate</a>, <script data-card-contents-for-ri="122404" type="text/json">{"id":122404,"name":"Nitrate","url":"https://www.academia.edu/Documents/in/Nitrate?f_ri=15372","nofollow":true}</script><a class="InlineList-item-text" data-has-card-for-ri="162978" rel="nofollow" href="https://www.academia.edu/Documents/in/Nitrite">Nitrite</a><script data-card-contents-for-ri="162978" type="text/json">{"id":162978,"name":"Nitrite","url":"https://www.academia.edu/Documents/in/Nitrite?f_ri=15372","nofollow":true}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=4816213]'), work: {"id":4816213,"title":"Investigation of the Nitrate and Nitrite Contents in Milk and Milk Powder in Taiwan","created_at":"2013-10-18T18:04:44.486-07:00","url":"https://www.academia.edu/4816213/Investigation_of_the_Nitrate_and_Nitrite_Contents_in_Milk_and_Milk_Powder_in_Taiwan?f_ri=15372","dom_id":"work_4816213","summary":"Cow milk is one of the most important nutrition sources besides breast milk for infants and babies; therefore the detection of nitrate and nitrite in milk is of great importance to the health of infants and babies. Traditional colorimetric method for the determination of the nitrate and nitrite concentrations in food is very tedious. In the present study, 100 samples of milk and milk powder were analyzed by ion chromatography to detect nitrate and nitrite simultaneously without tedious preparation steps. The limit of detection (LOD) for nitrate is 0.33 ppm and the LOD for nitrite 0.07 ppm. The measured nitrate concentration in milk ranged from 0.3 -417.7 ppm with an average concentration of 92.7 ppm. The nitrite concentration in all milk samples were below the detection limit. The survey information was as the following: (1) the average nitrate concentration of colostrums fortified milk ranged from 14.1 to 136 ppm. (2) the average nitrate concentration of whey fortified milk ranged from 42.6 to 242.8 ppm.","downloadable_attachments":[{"id":32110544,"asset_id":4816213,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":1239949,"first_name":"Tai Sheng","last_name":"Yeh","domain_name":"meiho","page_name":"TaiShengYeh","display_name":"Tai Sheng Yeh","profile_url":"https://meiho.academia.edu/TaiShengYeh?f_ri=15372","photo":"https://0.academia-photos.com/1239949/2570702/2985344/s65_tai_sheng.yeh.jpg"}],"research_interests":[{"id":145,"name":"Biochemistry","url":"https://www.academia.edu/Documents/in/Biochemistry?f_ri=15372","nofollow":true},{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true},{"id":122404,"name":"Nitrate","url":"https://www.academia.edu/Documents/in/Nitrate?f_ri=15372","nofollow":true},{"id":162978,"name":"Nitrite","url":"https://www.academia.edu/Documents/in/Nitrite?f_ri=15372","nofollow":true},{"id":238368,"name":"Milk","url":"https://www.academia.edu/Documents/in/Milk?f_ri=15372"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_11367821" data-work_id="11367821" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/11367821/Determination_of_Nitrogen_Species_Nitrate_Nitrite_and_Ammonia_Ions_in_Environmental_Samples_by_Ion_Chromatography">Determination of Nitrogen Species (Nitrate, Nitrite and Ammonia Ions) in Environmental Samples by Ion Chromatography</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">The necessity of environmental protection has stimulated development of all kinds of methods allowing determination of different pollutants in different elements of the natural environment, including methods for determining inorganic... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_11367821" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">The necessity of environmental protection has stimulated development of all kinds of methods allowing determination of different pollutants in different elements of the natural environment, including methods for determining inorganic nitrogen ions. Many of the methods used so far have proven insufficiently sensitive, selective or accurate and recently much attention has been paid to ion chromatography, which seems most promising. This paper reviews applications of ion chromatography for determining nitrate, nitrite and ammonium ions in environmental samples and in food products along with ISO standards and the relevant methods proposed by the US EPA and Dionex.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/11367821" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="203d31e31dd047758831004ef940e961" rel="nofollow" data-download="{"attachment_id":36936422,"asset_id":11367821,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/36936422/download_file?st=MTc0MDkzMDYzMSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="27631867" href="https://independent.academia.edu/MonicaColt">Monica Colt</a><script data-card-contents-for-user="27631867" type="text/json">{"id":27631867,"first_name":"Monica","last_name":"Colt","domain_name":"independent","page_name":"MonicaColt","display_name":"Monica Colt","profile_url":"https://independent.academia.edu/MonicaColt?f_ri=15372","photo":"/images/s65_no_pic.png"}</script></span></span></li><li class="js-paper-rank-work_11367821 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="11367821"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 11367821, container: ".js-paper-rank-work_11367821", }); 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Many of the methods used so far have proven insufficiently sensitive, selective or accurate and recently much attention has been paid to ion chromatography, which seems most promising. This paper reviews applications of ion chromatography for determining nitrate, nitrite and ammonium ions in environmental samples and in food products along with ISO standards and the relevant methods proposed by the US EPA and Dionex.","downloadable_attachments":[{"id":36936422,"asset_id":11367821,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":27631867,"first_name":"Monica","last_name":"Colt","domain_name":"independent","page_name":"MonicaColt","display_name":"Monica Colt","profile_url":"https://independent.academia.edu/MonicaColt?f_ri=15372","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":55,"name":"Environmental Engineering","url":"https://www.academia.edu/Documents/in/Environmental_Engineering?f_ri=15372","nofollow":true},{"id":523,"name":"Chemistry","url":"https://www.academia.edu/Documents/in/Chemistry?f_ri=15372","nofollow":true},{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true},{"id":122404,"name":"Nitrate","url":"https://www.academia.edu/Documents/in/Nitrate?f_ri=15372","nofollow":true},{"id":162978,"name":"Nitrite","url":"https://www.academia.edu/Documents/in/Nitrite?f_ri=15372"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_23568966 coauthored" data-work_id="23568966" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/23568966/Determination_of_iodide_and_iodate_in_edible_salt_by_ion_chromatography_with_integrated_amperometric_detection">Determination of iodide and iodate in edible salt by ion chromatography with integrated amperometric detection</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">Iodised salt compositions formulated with potassium iodate typically have iodate content of 20-40 ppm (lg/g) which translates to iodine content of 15-30 ppm. The technique of iodide estimation in brine by ion chromatography with... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_23568966" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">Iodised salt compositions formulated with potassium iodate typically have iodate content of 20-40 ppm (lg/g) which translates to iodine content of 15-30 ppm. The technique of iodide estimation in brine by ion chromatography with amperometric detection was applied to iodate estimation in salt. The method involved reduction of iodate to iodide with excess sodium bisulphite followed by estimation of iodide. No other pre-treatment was necessary for iodate estimation in the concentration range of interest for iodised salt. Quantitative analysis was feasible for iodate concentrations P5 ppm in salt. Iodised salt formulations containing iodide and iodate together were also analysed and the two constituents were quantified separately. Interferences from impurities normally present in salt were insignificant. An important advantage of the present method is that it eliminates the possibility of misleading results from potential adulterants which can impart positive iodometric test while, at the same time, keeping the analytical procedure simple.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/23568966" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="fc084914c1ed33976fe61777cc33a40c" rel="nofollow" data-download="{"attachment_id":43993682,"asset_id":23568966,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/43993682/download_file?st=MTc0MDkzMDYzMSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="45602507" href="https://independent.academia.edu/PushpitoGhosh">Pushpito Ghosh</a><script data-card-contents-for-user="45602507" type="text/json">{"id":45602507,"first_name":"Pushpito","last_name":"Ghosh","domain_name":"independent","page_name":"PushpitoGhosh","display_name":"Pushpito Ghosh","profile_url":"https://independent.academia.edu/PushpitoGhosh?f_ri=15372","photo":"/images/s65_no_pic.png"}</script></span></span><span class="u-displayInlineBlock InlineList-item-text"> and <span class="u-textDecorationUnderline u-clickable InlineList-item-text js-work-more-authors-23568966">+1</span><div class="hidden js-additional-users-23568966"><div><span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a href="https://independent.academia.edu/BabuLal5">Babu Lal</a></span></div></div></span><script>(function(){ var popoverSettings = { el: $('.js-work-more-authors-23568966'), placement: 'bottom', hide_delay: 200, html: true, content: function(){ return $('.js-additional-users-23568966').html(); 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The technique of iodide estimation in brine by ion chromatography with amperometric detection was applied to iodate estimation in salt. The method involved reduction of iodate to iodide with excess sodium bisulphite followed by estimation of iodide. No other pre-treatment was necessary for iodate estimation in the concentration range of interest for iodised salt. Quantitative analysis was feasible for iodate concentrations P5 ppm in salt. Iodised salt formulations containing iodide and iodate together were also analysed and the two constituents were quantified separately. Interferences from impurities normally present in salt were insignificant. An important advantage of the present method is that it eliminates the possibility of misleading results from potential adulterants which can impart positive iodometric test while, at the same time, keeping the analytical procedure simple.","downloadable_attachments":[{"id":43993682,"asset_id":23568966,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":45602507,"first_name":"Pushpito","last_name":"Ghosh","domain_name":"independent","page_name":"PushpitoGhosh","display_name":"Pushpito Ghosh","profile_url":"https://independent.academia.edu/PushpitoGhosh?f_ri=15372","photo":"/images/s65_no_pic.png"},{"id":45887128,"first_name":"Babu","last_name":"Lal","domain_name":"independent","page_name":"BabuLal5","display_name":"Babu Lal","profile_url":"https://independent.academia.edu/BabuLal5?f_ri=15372","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":15372,"name":"Ion Chromatography","url":"https://www.academia.edu/Documents/in/Ion_Chromatography?f_ri=15372","nofollow":true},{"id":16137,"name":"Food Chemistry","url":"https://www.academia.edu/Documents/in/Food_Chemistry?f_ri=15372","nofollow":true},{"id":28235,"name":"Multidisciplinary","url":"https://www.academia.edu/Documents/in/Multidisciplinary?f_ri=15372","nofollow":true},{"id":37434,"name":"Quantitative 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