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"https://www.academia.edu/login?post_login_redirect_url=https%3A%2F%2Fwww.academia.edu%2F87602763%2FSpectrophotometric_Determination_of_Kelthane_in_Environmental_Samples%3Fauto%3Ddownload"; window.loswp.translateUrl = "https://www.academia.edu/login?post_login_redirect_url=https%3A%2F%2Fwww.academia.edu%2F87602763%2FSpectrophotometric_Determination_of_Kelthane_in_Environmental_Samples%3Fshow_translation%3Dtrue"; window.loswp.previewableAttachments = [{"id":91766994,"identifier":"Attachment_91766994","shouldShowBulkDownload":false}]; window.loswp.shouldDetectTimezone = true; window.loswp.shouldShowBulkDownload = true; window.loswp.showSignupCaptcha = false window.loswp.willEdgeCache = false; window.loswp.work = {"work":{"id":87602763,"created_at":"2022-09-30T00:37:01.350-07:00","from_world_paper_id":216288732,"updated_at":"2024-11-30T03:57:35.950-08:00","_data":{"publisher":"Scientific Research Publishing, Inc.","ai_title_tag":"Sensitive Spectrophotometric Method for Kelthane Detection","grobid_abstract":"Sensitive spectrophotometric method for determination of kelthane in sub parts per million level is described, which is based on Fujiwara reaction. Kelthane on alkaline hydrolysis gives chloroform, which can be reacted with pyridine to produce red colour. The colour is discharged by addition of glacial acetic acid. Then Benzidine (4,4'-Bianiline) reagent is added due to which a yellowish-red colour is formed which has an absorption maximum at 490nm. Beer's law is obeyed in the range of 3.3-26.0 µg (0.13-1.04 ppm) of Kelthane per 25ml of final solution. The molar absorptivity and Sandell's sensitivity were found to be 4.32 × 10 5 L•mol-1 •cm-1 and 0.022 µg•cm-2 respectively. The method is found to be free from interferences of other organochlorine pesticides and various co-pollutants and can be successfully applied for the determination of kelthane in environmental samples.","publication_date":"2011,,","publication_name":"American Journal of Analytical Chemistry","grobid_abstract_attachment_id":"91766994"},"document_type":"paper","pre_hit_view_count_baseline":null,"quality":"high","language":"en","title":"Spectrophotometric Determination of Kelthane in Environmental Samples","broadcastable":false,"draft":null,"has_indexable_attachment":true,"indexable":true}}["work"]; window.loswp.workCoauthors = [215226724]; window.loswp.locale = "en"; window.loswp.countryCode = "SG"; window.loswp.cwvAbTestBucket = ""; window.loswp.designVariant = "ds_vanilla"; window.loswp.fullPageMobileSutdModalVariant = "full_page_mobile_sutd_modal"; window.loswp.useOptimizedScribd4genScript = false; window.loginModal = {}; window.loginModal.appleClientId = 'edu.academia.applesignon';</script><script defer="" src="https://accounts.google.com/gsi/client"></script><div class="ds-loswp-container"><div class="ds-work-card--grid-container"><div class="ds-work-card--container js-loswp-work-card"><div class="ds-work-card--cover"><div class="ds-work-cover--wrapper"><div class="ds-work-cover--container"><button class="ds-work-cover--clickable js-swp-download-button" data-signup-modal="{"location":"swp-splash-paper-cover","attachmentId":91766994,"attachmentType":"pdf"}"><img alt="First page of “Spectrophotometric Determination of Kelthane in Environmental Samples”" class="ds-work-cover--cover-thumbnail" src="https://0.academia-photos.com/attachment_thumbnails/91766994/mini_magick20220930-1-wo860x.png?1664523562" /><img alt="PDF Icon" class="ds-work-cover--file-icon" src="//a.academia-assets.com/images/single_work_splash/adobe_icon.svg" /><div class="ds-work-cover--hover-container"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">download</span><p>Download Free PDF</p></div><div class="ds-work-cover--ribbon-container">Download Free PDF</div><div class="ds-work-cover--ribbon-triangle"></div></button></div></div></div><div class="ds-work-card--work-information"><h1 class="ds-work-card--work-title">Spectrophotometric Determination of Kelthane in Environmental Samples</h1><div class="ds-work-card--work-authors ds-work-card--detail"><a class="ds-work-card--author js-wsj-grid-card-author ds2-5-body-md ds2-5-body-link" data-author-id="215226724" href="https://independent.academia.edu/EteshJanghel"><img alt="Profile image of Etesh Janghel" class="ds-work-card--author-avatar" src="https://0.academia-photos.com/215226724/73815057/62302257/s65_etesh.janghel.png" />Etesh Janghel</a></div><div class="ds-work-card--detail"><p class="ds-work-card--detail ds2-5-body-sm">2011, American Journal of Analytical Chemistry</p><div class="ds-work-card--work-metadata"><div class="ds-work-card--work-metadata__stat"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">visibility</span><p class="ds2-5-body-sm" id="work-metadata-view-count">…</p></div><div class="ds-work-card--work-metadata__stat"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">description</span><p class="ds2-5-body-sm">5 pages</p></div><div class="ds-work-card--work-metadata__stat"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">link</span><p class="ds2-5-body-sm">1 file</p></div></div><script>(async () => { const workId = 87602763; 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if (!viewCountBody) { throw new Error('Failed to find work views element'); } viewCountBody.textContent = `${commaizedViewCount} views`; } catch (error) { // Remove the whole views element if there was some issue parsing. document.getElementById('work-metadata-view-count')?.parentNode?.remove(); throw new Error(`Failed to parse view count: ${viewCount}`, error); } }; // If the DOM is still loading, wait for it to be ready before updating the view count. if (document.readyState === "loading") { document.addEventListener('DOMContentLoaded', () => { updateViewCount(viewCount); }); // Otherwise, just update it immediately. } else { updateViewCount(viewCount); } })();</script></div><p class="ds-work-card--work-abstract ds-work-card--detail ds2-5-body-md">Sensitive spectrophotometric method for determination of kelthane in sub parts per million level is described, which is based on Fujiwara reaction. Kelthane on alkaline hydrolysis gives chloroform, which can be reacted with pyridine to produce red colour. The colour is discharged by addition of glacial acetic acid. Then Benzidine (4,4'-Bianiline) reagent is added due to which a yellowish-red colour is formed which has an absorption maximum at 490nm. Beer's law is obeyed in the range of 3.3-26.0 µg (0.13-1.04 ppm) of Kelthane per 25ml of final solution. The molar absorptivity and Sandell's sensitivity were found to be 4.32 × 10 5 L•mol-1 •cm-1 and 0.022 µg•cm-2 respectively. The method is found to be free from interferences of other organochlorine pesticides and various co-pollutants and can be successfully applied for the determination of kelthane in environmental samples.</p><div class="ds-work-card--button-container"><button class="ds2-5-button js-swp-download-button" data-signup-modal="{"location":"continue-reading-button--work-card","attachmentId":91766994,"attachmentType":"pdf","workUrl":"https://www.academia.edu/87602763/Spectrophotometric_Determination_of_Kelthane_in_Environmental_Samples"}">See full PDF</button><button class="ds2-5-button ds2-5-button--secondary js-swp-download-button" data-signup-modal="{"location":"download-pdf-button--work-card","attachmentId":91766994,"attachmentType":"pdf","workUrl":"https://www.academia.edu/87602763/Spectrophotometric_Determination_of_Kelthane_in_Environmental_Samples"}"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">download</span>Download PDF</button></div></div></div></div><div data-auto_select="false" data-client_id="331998490334-rsn3chp12mbkiqhl6e7lu2q0mlbu0f1b" data-doc_id="91766994" data-landing_url="https://www.academia.edu/87602763/Spectrophotometric_Determination_of_Kelthane_in_Environmental_Samples" data-login_uri="https://www.academia.edu/registrations/google_one_tap" data-moment_callback="onGoogleOneTapEvent" id="g_id_onload"></div><div class="ds-top-related-works--grid-container"><div class="ds-related-content--container ds-top-related-works--container"><h2 class="ds-related-content--heading">Related papers</h2><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="0" data-entity-id="87432882" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/87432882/A_simple_sensitive_spectrophotometric_method_for_determination_of_dichlorvos_in_environmental_samples">A simple sensitive spectrophotometric method for determination of dichlorvos in environmental samples</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="49209850" href="https://independent.academia.edu/DrAjaiPillai">Dr. Ajai Pillai</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Indian Journal of Chemical Technology, 2003</p><p class="ds-related-work--abstract ds2-5-body-sm">A sensitive method has been developed for spectrophotometric determination of an organophosphorous pesticide dichlorvos, also known as 2,2 dichlorovinyl methyl phosphate or dichlorophos. 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The method has been successfully applied for the determination of dichlorvos in water, agricultural soil and vegetables.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"A simple sensitive spectrophotometric method for determination of dichlorvos in environmental samples","attachmentId":91641055,"attachmentType":"pdf","work_url":"https://www.academia.edu/87432882/A_simple_sensitive_spectrophotometric_method_for_determination_of_dichlorvos_in_environmental_samples","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/87432882/A_simple_sensitive_spectrophotometric_method_for_determination_of_dichlorvos_in_environmental_samples"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="1" data-entity-id="73178634" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/73178634/Sensitive_Spectrophotometric_Determination_of_Deltamethrin_Insecticide_in_its_Formulation_and_Environmental_Samples">Sensitive Spectrophotometric Determination of Deltamethrin Insecticide in its Formulation and Environmental Samples</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="220094" href="https://ps-eng.academia.edu/SayedMoalla">Sayed Moalla</a></div><p class="ds-related-work--metadata ds2-5-body-xs">2015</p><p class="ds-related-work--abstract ds2-5-body-sm">Three sensitive spectrophotometric methods were developed for the determination of deltamethrin as synthetic pyrethroid in its formulations and environmental samples. 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Green Analytical Chemistry in the Determination of Organic Pollutants in the Environment</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="26890276" href="https://independent.academia.edu/SandraPerez43">Sandra Perez</a></div><p class="ds-related-work--metadata ds2-5-body-xs">RSC Green Chemistry, 2011</p><p class="ds-related-work--abstract ds2-5-body-sm">The need for environmentally benign methodologies to determine volatile fatty acids (VFAs) in wastewater was emphasized. The reasons to apply gas chromatography (GC) as a separation technique were given. The advantages and the range of application of direct injection of aqueous samples into GC were discussed. Environmentally benign extraction techniques which are thought to be applicable to prepare wastewater for determination of VFAs were listed. The GC based analytical procedures employing direct injection of aqueous samples to GC and those preceded by sample preparation using such techniques as distillation, static headspace (HS), and solid phase microexctraction from sample headspace (HS-SPME) were discussed.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Chapter 9. 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A Kinetic Study</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="44395620" href="https://independent.academia.edu/BehzadRezaei2">Behzad Rezaei</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Analytical Letters, 1994</p><p class="ds-related-work--abstract ds2-5-body-sm">A new, simple, rapid, and sensitive spectrophotometric method for the determination of thiophanate-methyl, based on its reaction with cobalt(II) in the presence of triethylamine, has been developed. The yellowish green color that develops instantaneously on mixing the fungicide with the reagents in dimethylformamide is stable for at least 2 h and has maximum absorbance at 360 nm. The method has been successfully applied to the determination of thiophanate-methyl in its commercial formulations and residues on grains and apples. A photometric titration procedure for formulation analysis of the fungicide has also been developed.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Simple and Rapid Spectrophotometric Method for Determination of Some Aromatic Aldehydes. A Kinetic Study","attachmentId":70975212,"attachmentType":"pdf","work_url":"https://www.academia.edu/54770111/Simple_and_Rapid_Spectrophotometric_Method_for_Determination_of_Some_Aromatic_Aldehydes_A_Kinetic_Study","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/54770111/Simple_and_Rapid_Spectrophotometric_Method_for_Determination_of_Some_Aromatic_Aldehydes_A_Kinetic_Study"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="5" data-entity-id="123780458" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/123780458/Assessment_of_Fenobucarb_and_Propoxur_insecticides_in_environmental_samples_by_spectrophotometric_and_spectrofluorimetric_methods">Assessment of Fenobucarb and Propoxur insecticides in environmental samples by spectrophotometric and spectrofluorimetric methods</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="314993084" href="https://independent.academia.edu/AkhilChaudhary34">Akhil Chaudhary</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Research Square (Research Square), 2023</p><p class="ds-related-work--abstract ds2-5-body-sm">The widespread use of fenobucarb and propoxur insecticides for agricultural and non-agricultural purposes causes undesirable effects on human health and environment due to their residues in surface and ground water resources. In view of this two new, simple, accurate, sensitive, economical and reproducible optical methods have been investigated for the determination of fenobucarb and propoxur insecticides in pure form, in their commercial formulations and agricultural samples viz. water, grains and vegetables. The methods are based on the alkaline hydrolysis of the insecticides to methyl amine and the reaction of latter to give colored products. In spectrophotometric method the methyl amine formed, in presence of carbon disul de and Ni(II)acetate gives a yellow colored complex, which was measured at 370 nm. Beer's law is valid in the concentration range of 0.41-8.29 and 0.42-8.37 µg/ mL for fenobucarb and propoxur respectively. The spectro uorimetric method is based on the study of yellow colored product, formed by the condensation of methyl amine, with acetylacetone and formaldehyde (Hantzsch reaction) at pH 5.5. The reaction product exhibits uorescence intensity at an emission wavelength of 470 nm after excitation at a wavelength of 390 nm for both fenobucarb and propoxur insecticides. The method has linearity range 0.14-5.53 and 0.14-5.58 µg/ mL for fenobucarb and propoxur respectively. The different factors which affect the reactions were thoroughly studied and optimized. The proposed methods have been successfully applied for the assay of both insecticides in their commercial formulations and for recovery study from spiked environmental samples. The good results of recoveries of both insecticides demonstrate the accuracy and precision of both methods.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Assessment of Fenobucarb and Propoxur insecticides in environmental samples by spectrophotometric and spectrofluorimetric methods","attachmentId":118132980,"attachmentType":"pdf","work_url":"https://www.academia.edu/123780458/Assessment_of_Fenobucarb_and_Propoxur_insecticides_in_environmental_samples_by_spectrophotometric_and_spectrofluorimetric_methods","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/123780458/Assessment_of_Fenobucarb_and_Propoxur_insecticides_in_environmental_samples_by_spectrophotometric_and_spectrofluorimetric_methods"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="6" data-entity-id="14254557" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/14254557/Determination_of_trihalomethanes_in_water_samples_A_review">Determination of trihalomethanes in water samples: A review</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="33221165" href="https://independent.academia.edu/Jos%C3%A9Pav%C3%B3n">José Pavón</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Analytica Chimica Acta, 2008</p><p class="ds-related-work--abstract ds2-5-body-sm">a n a l y t i c a c h i m i c a a c t a 6 2 9 ( 2 0 0 8 ) 6-23 a v a i l a b l e a t w w w . s c i e n c e d i r e c t . c o m j o u r n a l h o m e p a g e : w w w . e l s e v i e r . c o m / l o c a t e / a c a a b s t r a c t This article reviews the most recent literature addressing the analytical methods applied for trihalomethanes (THMs) determination in water samples. This analysis is usually performed with gas chromatography (GC) combined with a preconcentration step. The detectors most widely used in this type of analyses are mass spectrometers (MS) and electron capture detectors (ECD).</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Determination of trihalomethanes in water samples: A review","attachmentId":44395628,"attachmentType":"pdf","work_url":"https://www.academia.edu/14254557/Determination_of_trihalomethanes_in_water_samples_A_review","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/14254557/Determination_of_trihalomethanes_in_water_samples_A_review"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="7" data-entity-id="101166498" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/101166498/A_simplified_Quick_Easy_Cheap_Effective_Rugged_and_Safe_approach_for_the_determination_of_trihalomethanes_and_benzene_toluene_ethylbenzene_and_xylenes_in_soil_matrices_by_fast_gas_chromatography_with_mass_spectrometry_detection">A simplified Quick, Easy, Cheap, Effective, Rugged and Safe approach for the determination of trihalomethanes and benzene, toluene, ethylbenzene and xylenes in soil matrices by fast gas chromatography with mass spectrometry detection</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="56493681" href="https://independent.academia.edu/BernardoMorenoCordero">Bernardo Moreno Cordero</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Analytica Chimica Acta, 2011</p><p class="ds-related-work--abstract ds2-5-body-sm">A method based on simplified QuEChERS (Quick, Easy, Cheap, Effective, Rugged and Safe) extraction followed by large-injection volume-fast gas chromatography and mass spectrometry detection has been developed for the determination of trihalomethanes (chloroform, bromodichloromethane, dibromochloromethane and bromoform) and BTEX (benzene, toluene, ethylbenzene and xylenes) in soil samples. The simplified version of QuEChERS used meets the requirements of the "green chemistry" and provides reliable results with high sample throughput, low solvent consumption, little labour and the use of materials commonly employed in laboratories. The GC device used is equipped with a programmable temperature vaporizer (PTV), with a liner packed with Tenax-TA ®. Using the solvent-vent mode, the PTV allows the injection of large volumes of sample, affording an improvement in the sensitivity of the method. The chromatographic conditions used here allowed the separation of the compounds in less than 5.50 min. Good linearity was obtained for all the target compounds, with highly satisfactory repeatability and reproducibility values. The limits of detection were in the 0.2 to 15 g kg −1 range. The method was validated by the analysis of two certified reference materials.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"A simplified Quick, Easy, Cheap, Effective, Rugged and Safe approach for the determination of trihalomethanes and benzene, toluene, ethylbenzene and xylenes in soil matrices by fast gas chromatography with mass spectrometry detection","attachmentId":101781914,"attachmentType":"pdf","work_url":"https://www.academia.edu/101166498/A_simplified_Quick_Easy_Cheap_Effective_Rugged_and_Safe_approach_for_the_determination_of_trihalomethanes_and_benzene_toluene_ethylbenzene_and_xylenes_in_soil_matrices_by_fast_gas_chromatography_with_mass_spectrometry_detection","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/101166498/A_simplified_Quick_Easy_Cheap_Effective_Rugged_and_Safe_approach_for_the_determination_of_trihalomethanes_and_benzene_toluene_ethylbenzene_and_xylenes_in_soil_matrices_by_fast_gas_chromatography_with_mass_spectrometry_detection"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="8" data-entity-id="65523705" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/65523705/Extractive_Spectrophotometric_Method_for_the_Determination_of_Carbaryl_in_Environmental_Samples">Extractive Spectrophotometric Method for the Determination of Carbaryl in Environmental Samples</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="80979497" href="https://independent.academia.edu/tilakdharmani">tilak dharmani</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Bulletin of The Chemical Society of Ethiopia, 2015</p><p class="ds-related-work--abstract ds2-5-body-sm">In the view of the potential hazards associated with the widespread use of carbaryl insecticide, a new simple extractive spectrophotometric method has been developed for its determination in environmental samples viz. soil, water and foodstuffs for its safer and more effective use. The proposed method is based on the microwave assisted alkaline hydrolysis of the insecticide to methylamine. The later is measured as methyl isobutyl ketone (MIBK) extractable yellow nickel(II)-methyldithiocarbamate complex at 380 nm through the reaction with carbon disulfide and nickel(II) acetate. The insecticide can be determined in the linearity range from 2.01 to 60.3 µg mL -1 with a correlation coefficient of 0.996. The method has been applied to the analysis of carbaryl in its commercial formulation and its recovery from vegetable and water samples for monitoring health hazards. Recoveries of the insecticide from vegetables and spiked water samples were good, ranging from 87.6-92.8%, with RSDs ran...</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Extractive Spectrophotometric Method for the Determination of Carbaryl in Environmental Samples","attachmentId":77081766,"attachmentType":"pdf","work_url":"https://www.academia.edu/65523705/Extractive_Spectrophotometric_Method_for_the_Determination_of_Carbaryl_in_Environmental_Samples","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/65523705/Extractive_Spectrophotometric_Method_for_the_Determination_of_Carbaryl_in_Environmental_Samples"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="9" data-entity-id="20093326" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/20093326/Green_Aspects_of_Techniques_for_the_Determination_of_Currently_Used_Pesticides_in_Environmental_Samples">Green Aspects of Techniques for the Determination of Currently Used Pesticides in Environmental Samples</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="41114764" href="https://independent.academia.edu/MarekBiziuk">Marek Biziuk</a></div><p class="ds-related-work--metadata ds2-5-body-xs">International Journal of Molecular Sciences, 2011</p><p class="ds-related-work--abstract ds2-5-body-sm">Pesticides are among the most dangerous environmental pollutants because of their stability, mobility and long-term effects on living organisms. Their presence in the environment is a particular danger. It is therefore crucial to monitor pesticide residues using all available analytical methods. The analysis of environmental samples for the presence of pesticides is very difficult: the processes involved in sample preparation are labor-intensive and time-consuming. To date, it has been standard practice to use large quantities of organic solvents in the sample preparation process; but as these solvents are themselves hazardous, solvent-less and solvent-minimized techniques are becoming popular. The application of Green Chemistry principles to sample preparation is primarily leading to the miniaturization of procedures and the use of solvent-less techniques, and these are discussed in the paper.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Green Aspects of Techniques for the Determination of Currently Used Pesticides in Environmental Samples","attachmentId":41138251,"attachmentType":"pdf","work_url":"https://www.academia.edu/20093326/Green_Aspects_of_Techniques_for_the_Determination_of_Currently_Used_Pesticides_in_Environmental_Samples","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/20093326/Green_Aspects_of_Techniques_for_the_Determination_of_Currently_Used_Pesticides_in_Environmental_Samples"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div></div></div><div class="ds-sticky-ctas--wrapper js-loswp-sticky-ctas hidden"><div class="ds-sticky-ctas--grid-container"><div class="ds-sticky-ctas--container"><button class="ds2-5-button js-swp-download-button" data-signup-modal="{"location":"continue-reading-button--sticky-ctas","attachmentId":91766994,"attachmentType":"pdf","workUrl":null}">See full PDF</button><button class="ds2-5-button ds2-5-button--secondary js-swp-download-button" data-signup-modal="{"location":"download-pdf-button--sticky-ctas","attachmentId":91766994,"attachmentType":"pdf","workUrl":null}"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">download</span>Download PDF</button></div></div></div><div class="ds-below-fold--grid-container"><div class="ds-work--container js-loswp-embedded-document"><div class="attachment_preview" data-attachment="Attachment_91766994" style="display: none"><div class="js-scribd-document-container"><div class="scribd--document-loading js-scribd-document-loader" style="display: block;"><img alt="Loading..." src="//a.academia-assets.com/images/loaders/paper-load.gif" /><p>Loading Preview</p></div></div><div style="text-align: center;"><div class="scribd--no-preview-alert js-preview-unavailable"><p>Sorry, preview is currently unavailable. 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data-sort-order="default"><a class="ds-related-work--title js-related-work-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/87602775/Trace_Spectrophotometric_Determination_of_Dichlorvos_using_Diphenyl_Semicarbazide_DPC_in_Environmental_and_Agricultural_Samples">Trace Spectrophotometric Determination of Dichlorvos using Diphenyl Semicarbazide (DPC) in Environmental and Agricultural Samples</a><div class="ds-related-work--metadata"><a class="js-related-work-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="215226724" href="https://independent.academia.edu/EteshJanghel">Etesh Janghel</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Journal of the Chinese Chemical Society, 2007</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Trace Spectrophotometric Determination of Dichlorvos using 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determination of chlorobenzenes and chlorophenols through a stepwise interlaboratory study approach","attachmentId":46168310,"attachmentType":"pdf","work_url":"https://www.academia.edu/25804280/Improvements_in_the_determination_of_chlorobenzenes_and_chlorophenols_through_a_stepwise_interlaboratory_study_approach","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-related-work-grid-card-view-pdf" href="https://www.academia.edu/25804280/Improvements_in_the_determination_of_chlorobenzenes_and_chlorophenols_through_a_stepwise_interlaboratory_study_approach"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-related-work-sidebar-card" data-collection-position="5" data-entity-id="57021106" data-sort-order="default"><a class="ds-related-work--title js-related-work-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/57021106/Discussion_on_Alternatives_to_methanol_water_elution_of_solid_phase_extraction_columns_for_the_fractionation_of_high_log_Kow_organic_compounds_in_aqueous_environmental_samples_by_Durhan_et_al_J_Chromatogr_629_1993_67_74">Discussion on “Alternatives to methanol—water elution of solid-phase extraction columns for the fractionation of high log Kow organic compounds in aqueous environmental samples” by Durhan et al., J. Chromatogr., 629 (1993) 67–74</a><div class="ds-related-work--metadata"><a class="js-related-work-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="35182614" href="https://ucla.academia.edu/MichaelStenstrom">Michael Stenstrom</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Journal of Chromatography A, 1993</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Discussion on “Alternatives to methanol—water elution of solid-phase extraction columns for the fractionation of high log Kow organic compounds in aqueous environmental samples” by Durhan et al., J. 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sulfolane and alkanolamines in environmental studies : Environmental analysis</a><div class="ds-related-work--metadata"><a class="js-related-work-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="34879848" href="https://independent.academia.edu/PhillipFedorak">Phillip Fedorak</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Journal of Aoac International, 2002</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"A review of analytical methods for the determination of sulfolane and alkanolamines in environmental studies : Environmental analysis","attachmentId":53646279,"attachmentType":"pdf","work_url":"https://www.academia.edu/33631910/A_review_of_analytical_methods_for_the_determination_of_sulfolane_and_alkanolamines_in_environmental_studies_Environmental_analysis","alternativeTracking":true}"><span 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