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Several methods for particle-phase characterization have been recently developed to better detect and infer more accurately the sources and fates of sub-100 nm particles, but a detailed comparison of different approaches is missing. Here we report on the chemical composition of secondary organic aerosol (SOA) nanoparticles from experimental studies of α-pinene ozonolysis at −50, −30, and −10 ∘C and intercompare the results measured by different techniques. The experiments were performed at the Cosmics Leaving OUtdoor Droplets (CLOUD) chamber at the European Organization for Nuclear Research (CERN). The chemical composition was measured simultaneously by four different techniques: (1) thermal desorption–differential mobility analyzer (TD–DMA) coupled to a NO3- chemical ionization–atmospheric-pressure-interface–time-of-flight (CI–APi–TOF) mass spectrometer, (2) filter inlet for gases and aerosols (FIGAERO) coupled to an I− high-resolution time-of-flight chemical ionization mass spectrometer (HRToF-CIMS), (3) extractive electrospray Na+ ionization time-of-flight mass spectrometer (EESI-TOF), and (4) offline analysis of filters (FILTER) using ultra-high-performance liquid chromatography (UHPLC) and heated electrospray ionization (HESI) coupled to an Orbitrap high-resolution mass spectrometer (HRMS). Intercomparison was performed by contrasting the observed chemical composition as a function of oxidation state and carbon number, by estimating the volatility and comparing the fraction of volatility classes, and by comparing the thermal desorption behavior (for the thermal desorption techniques: TD–DMA and FIGAERO) and performing positive matrix factorization (PMF) analysis for the thermograms. We found that the methods generally agree on the most important compounds that are found in the nanoparticles. However, they do see different parts of the organic spectrum. We suggest potential explanations for these differences: thermal decomposition, aging, sampling artifacts, etc. We applied PMF analysis and found insights of thermal decomposition in the TD–DMA and the FIGAERO. Caudillo, Lucía; Surdu, Mihnea; Lopez, Brandon; Wang, Mingyi; Thoma, Markus; Bräkling, Steffen; Buchholz, Angela; Simon, Mario; Wagner, Andrea C; Müller, Tatjana; Granzin, Manuel; Heinritzi, Martin; Amorim, Antonio; Bell, David M; Brasseur, Zoé; Dada, Lubna; Duplissy, Jonathan; Finkenzeller, Henning; He, Xu-Cheng; Lamkaddam, Houssni; Mahfouz, Naser G A; Makhmutov, Vladimir; Manninen, Hanna E; Marie, Guillaume; Marten, Ruby; Mauldin, Roy L; Mentler, Bernhard; Onnela, Antti; Petäjä, Tuukka; Pfeifer, Joschka; Philippov, Maxim; Piedehierro, Ana A; Rörup, Birte; Scholz, Wiebke; Shen, Jiali; Stolzenburg, Dominik; Tauber, Christian; Tian, Ping; Tomé, António; Umo, Nsikanabasi Silas; Wang, Dongyu S; Wang, Yonghong; Weber, Stefan K; Welti, André; Zauner-Wieczorek, Marcel; Baltensperger, Urs; Flagan, Richard C; Hansel, Armin; Kirkby, Jasper; Kulmala, Markku; Lehtipalo, Katrianne; Worsnop, Douglas R; Haddad, Imad El; Donahue, Neil M; Vogel, Alexander L; Kürten, Andreas; Curtius, Joachim" /> <meta name="keywords" content="CERN Document Server, WebSearch, CERN Document Server" /> <script type="text/javascript" src="https://cds.cern.ch/js/jquery.min.js"></script>  <link rel="stylesheet" href="https://cds.cern.ch/img/webnews.css" type="text/css" />  <script type="text/javascript" src="https://cds.cern.ch/js/webnews.js?v=20131009"></script> <meta property="fb:app_id" content="137353533001720"/> <script type="text/x-mathjax-config"> MathJax.Hub.Config({ tex2jax: {inlineMath: [['$','$']], processEscapes: true}, showProcessingMessages: false, messageStyle: "none" }); 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Phys." name="citation_journal_title" /> <meta content="23" name="citation_volume" /> <meta content="6613-6631" name="citation_firstpage" /> <meta content="2023" name="citation_publication_date" /> <meta name="citation_online_date" content="2024/03/09"> <meta content="10.5194/acp-23-6613-2023" name="citation_doi" /> <meta name="citation_pdf_url" content="https://cds.cern.ch/record/2891194/files/acp-23-6613-2023.pdf" />  <meta content="submitter" property="og:title" /> <meta content="An intercomparison study of four different techniques for measuring the chemical composition of nanoparticles" property="og:title" /> <meta content="website" property="og:type" /> <meta content="https://cds.cern.ch/record/2891194" property="og:url" /> <meta content="CERN Document Server" property="og:site_name" /> <meta content="submitter" property="og:description" /> <meta content="Currently, the complete chemical characterization of nanoparticles (&lt; 100 nm) represents an analytical challenge, since these particles are abundant in number but have negligible mass. Several methods for particle-phase characterization have been recently developed to better detect and infer more accurately the sources and fates of sub-100 nm particles, but a detailed comparison of different approaches is missing. Here we report on the chemical composition of secondary organic aerosol (SOA) nanoparticles from experimental studies of α-pinene ozonolysis at −50, −30, and −10 ∘C and intercompare the results measured by different techniques. The experiments were performed at the Cosmics Leaving OUtdoor Droplets (CLOUD) chamber at the European Organization for Nuclear Research (CERN). The chemical composition was measured simultaneously by four different techniques: (1) thermal desorption–differential mobility analyzer (TD–DMA) coupled to a NO3- chemical ionization–atmospheric-pressure-interface–time-of-flight (CI–APi–TOF) mass spectrometer, (2) filter inlet for gases and aerosols (FIGAERO) coupled to an I− high-resolution time-of-flight chemical ionization mass spectrometer (HRToF-CIMS), (3) extractive electrospray Na+ ionization time-of-flight mass spectrometer (EESI-TOF), and (4) offline analysis of filters (FILTER) using ultra-high-performance liquid chromatography (UHPLC) and heated electrospray ionization (HESI) coupled to an Orbitrap high-resolution mass spectrometer (HRMS). Intercomparison was performed by contrasting the observed chemical composition as a function of oxidation state and carbon number, by estimating the volatility and comparing the fraction of volatility classes, and by comparing the thermal desorption behavior (for the thermal desorption techniques: TD–DMA and FIGAERO) and performing positive matrix factorization (PMF) analysis for the thermograms. We found that the methods generally agree on the most important compounds that are found in the nanoparticles. However, they do see different parts of the organic spectrum. We suggest potential explanations for these differences: thermal decomposition, aging, sampling artifacts, etc. We applied PMF analysis and found insights of thermal decomposition in the TD–DMA and the FIGAERO." property="og:description" />  <meta content="summary" name="twitter:card" /> <style></style> </head> <body class="CERN32Document32Server search" lang="no">  <div id="cern-toolbar"> <h1><a href="http://cern.ch" title="CERN">CERN <span>Accelerating science</span></a></h1> <ul> <li class="cern-accountlinks"><a class="cern-account" href="https://cds.cern.ch/youraccount/login?ln=no&referer=https%3A//cds.cern.ch/record/2891194%3Fln%3Dno" title="Sign in to your CERN account">Sign in</a></li> <li><a class="cern-directory" href="http://cern.ch/directory" title="Search CERN resources and browse the directory">Directory</a></li> </ul> </div>   <div role="banner" class="clearfix" id="header"> <div class="header-inner inner"> <hgroup class="clearfix"> <h2 id="site-name"> <a rel="home" title="Home" href="/"><span>CERN Document Server</span></a> </h2> <h3 id="site-slogan">Access articles, reports and multimedia content in HEP</h3> </hgroup> <div role="navigation" id="main-navigation" class="cdsmenu"> <h2 class="element-invisible">Main menu</h2><ul class="links inline clearfix"> <li class="menu-386 first active-trail"><a class="active-trail" href="https://cds.cern.ch/?ln=no">Søk</a></li> <li class="menu-444 "><a class="" title="" href="https://cds.cern.ch/submit?ln=no">Send inn</a></li> <li class="menu-426 "><a class="" href="https://cds.cern.ch/help/?ln=no">Hjelp</a></li> <li class="leaf hassubcdsmenu"> <a hreflang="en" class="header" href="https://cds.cern.ch/youraccount/display?ln=no">Brukerinnstillinger</a> <ul class="subsubcdsmenu"><li><a href="https://cds.cern.ch/youralerts/list?ln=no">Your alerts</a></li><li><a href="https://cds.cern.ch/yourbaskets/display?ln=no">Your baskets</a></li><li><a href="https://cds.cern.ch/yourcomments?ln=no">Your comments</a></li><li><a href="https://cds.cern.ch/youralerts/display?ln=no">Your searches</a></li></ul></li> </ul> </div> </div> </div>  <table class="navtrailbox"> <tr> <td class="navtrailboxbody"> <a href="/?ln=no" class="navtrail">Hovedsiden</a> > An intercomparison study of four different techniques for measuring the chemical composition of nanoparticles </td> </tr> </table> </div> <div class="pagebody"><div class="pagebodystripemiddle"> <div class="detailedrecordbox"> <div class="detailedrecordtabs"> <div> <ul class="detailedrecordtabs"><li class="on first"><a href="/record/2891194/?ln=no">Informasjon </a></li><li class=""><a href="/record/2891194/files?ln=no">Files </a></li></ul> <div id="tabsSpacer" style="clear:both;height:0px"> </div></div> </div> <div class="detailedrecordboxcontent"> <div class="top-left-folded"></div> <div class="top-right-folded"></div> <div class="inside">  <abbr class="unapi-id" title="2891194"></abbr> <style type="text/css">  </style> <table class="formatRecordTableFullWidth" > <tr> <td class="formatRecordHeader" style="background-image: url('https://cds.cern.ch/img/journals.jpg');" colspan="2">  Article </td> </tr> <script type="text/javascript"> $( document ).ready(function() { $('.showAuthor').on('click', function() { var author = '<p>' + $(this).data('name') + '</p>'; var affiliation = $(this).data('affiliation') + '</br>'; var contribution = $(this).data('contribution') + '</br>'; $.magnificPopup.open({ items: { src: '<div id="ovelary-mathjax" class="overlay-white oc-content overlay-white-500">' + author + affiliation + contribution + '</div>', type: 'inline' }, callbacks: { open: function() { var div = document.getElementById("overlay-mathjax") MathJax.Hub.Queue(["Typeset", MathJax.Hub, div]); }, } }) }) }); </script> <tr><td class="formatRecordLabel"> Title </td><td style="padding-left:5px;"><b>An intercomparison study of four different techniques for measuring the chemical composition of nanoparticles</b></td></tr> <tr><td class="formatRecordLabel"><span style="white-space:nowrap;"> Author(s) </span> </td><td style="padding-left:5px;"> <script type="text/javascript"> function toggle_authors_visibility(){ var more = document.getElementById('more'); var link = document.getElementById('link'); var extension = document.getElementById('extension'); if (more.style.display=='none'){ more.style.display = ''; extension.style.display = 'none'; link.innerHTML = "Skjul" } else { more.style.display = 'none'; extension.style.display = ''; link.innerHTML = "Vis alle 57 forfattere" } link.style.color = "rgb(204,0,0);" } function set_up(){ var extension = document.getElementById('extension'); extension.innerHTML = ""; toggle_authors_visibility(); } </script> <a name="show_hide" /><a href="https://cds.cern.ch/search?f=author&p=Caudillo%2C%20Luc%C3%ADa&ln=no">Caudillo, Lucía</a> (Frankfurt U., FIAS ; Frankfurt U.) ; <a href="https://cds.cern.ch/search?f=author&p=Surdu%2C%20Mihnea&ln=no">Surdu, Mihnea</a> (PSI, Villigen) ; <a href="https://cds.cern.ch/search?f=author&p=Lopez%2C%20Brandon&ln=no">Lopez, Brandon</a> (Carnegie Mellon U.) ; <a href="https://cds.cern.ch/search?f=author&p=Wang%2C%20Mingyi&ln=no">Wang, Mingyi</a> (Carnegie Mellon U. ; Caltech) ; <a href="https://cds.cern.ch/search?f=author&p=Thoma%2C%20Markus&ln=no">Thoma, Markus</a> (Frankfurt U., FIAS ; Frankfurt U.) ; <a href="https://cds.cern.ch/search?f=author&p=Br%C3%A4kling%2C%20Steffen&ln=no">Bräkling, Steffen</a> (LLNL, Livermore) ; <a href="https://cds.cern.ch/search?f=author&p=Buchholz%2C%20Angela&ln=no">Buchholz, Angela</a> (Aalto U.) ; <a href="https://cds.cern.ch/search?f=author&p=Simon%2C%20Mario&ln=no">Simon, Mario</a> (Frankfurt U., FIAS ; Frankfurt U.) ; <a href="https://cds.cern.ch/search?f=author&p=Wagner%2C%20Andrea%20C&ln=no">Wagner, Andrea C</a> (Frankfurt U., FIAS ; Frankfurt U.) ; <a href="https://cds.cern.ch/search?f=author&p=M%C3%BCller%2C%20Tatjana&ln=no">Müller, Tatjana</a> (Frankfurt U., FIAS ; Frankfurt U. ; Mainz, Max Planck Inst.)<span id="more" style=""> ; <a href="https://cds.cern.ch/search?f=author&p=Granzin%2C%20Manuel&ln=no">Granzin, Manuel</a> (Frankfurt U., FIAS ; Frankfurt U.) ; <a href="https://cds.cern.ch/search?f=author&p=Heinritzi%2C%20Martin&ln=no">Heinritzi, Martin</a> (Frankfurt U., FIAS ; Frankfurt U.) ; <a href="https://cds.cern.ch/search?f=author&p=Amorim%2C%20Antonio&ln=no">Amorim, Antonio</a> (CMAF, Lisbon) ; <a href="https://cds.cern.ch/search?f=author&p=Bell%2C%20David%20M&ln=no">Bell, David M</a> (PSI, Villigen) ; <a href="https://cds.cern.ch/search?f=author&p=Brasseur%2C%20Zo%C3%A9&ln=no">Brasseur, Zoé</a> (Helsinki U.) ; <a href="https://cds.cern.ch/search?f=author&p=Dada%2C%20Lubna&ln=no">Dada, Lubna</a> (PSI, Villigen) ; <a href="https://cds.cern.ch/search?f=author&p=Duplissy%2C%20Jonathan&ln=no">Duplissy, Jonathan</a> (Helsinki U. ; Helsinki Inst. of Phys.) ; <a href="https://cds.cern.ch/search?f=author&p=Finkenzeller%2C%20Henning&ln=no">Finkenzeller, Henning</a> (Colorado U.) ; <a href="https://cds.cern.ch/search?f=author&p=He%2C%20Xu-Cheng&ln=no">He, Xu-Cheng</a> (Helsinki U.) ; <a href="https://cds.cern.ch/search?f=author&p=Lamkaddam%2C%20Houssni&ln=no">Lamkaddam, Houssni</a> (PSI, Villigen) ; <a href="https://cds.cern.ch/search?f=author&p=Mahfouz%2C%20Naser%20G%20A&ln=no">Mahfouz, Naser G A</a> (Carnegie Mellon U.) ; <a href="https://cds.cern.ch/search?f=author&p=Makhmutov%2C%20Vladimir&ln=no">Makhmutov, Vladimir</a> (Lebedev Inst. ; Moscow, ITEP) ; <a href="https://cds.cern.ch/search?f=author&p=Manninen%2C%20Hanna%20E&ln=no">Manninen, Hanna E</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Marie%2C%20Guillaume&ln=no">Marie, Guillaume</a> (Frankfurt U., FIAS ; Frankfurt U.) ; <a href="https://cds.cern.ch/search?f=author&p=Marten%2C%20Ruby&ln=no">Marten, Ruby</a> (PSI, Villigen) ; <a href="https://cds.cern.ch/search?f=author&p=Mauldin%2C%20Roy%20L&ln=no">Mauldin, Roy L</a> (Colorado U. ; Carnegie Mellon U.) ; <a href="https://cds.cern.ch/search?f=author&p=Mentler%2C%20Bernhard&ln=no">Mentler, Bernhard</a> (Innsbruck U.) ; <a href="https://cds.cern.ch/search?f=author&p=Onnela%2C%20Antti&ln=no">Onnela, Antti</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Pet%C3%A4j%C3%A4%2C%20Tuukka&ln=no">Petäjä, Tuukka</a> (Helsinki U.) ; <a href="https://cds.cern.ch/search?f=author&p=Pfeifer%2C%20Joschka&ln=no">Pfeifer, Joschka</a> (Frankfurt U. ; CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Philippov%2C%20Maxim&ln=no">Philippov, Maxim</a> (Lebedev Inst.) ; <a href="https://cds.cern.ch/search?f=author&p=Piedehierro%2C%20Ana%20A&ln=no">Piedehierro, Ana A</a> (Helsinki Inst. of Phys.) ; <a href="https://cds.cern.ch/search?f=author&p=R%C3%B6rup%2C%20Birte&ln=no">Rörup, Birte</a> (Helsinki U.) ; <a href="https://cds.cern.ch/search?f=author&p=Scholz%2C%20Wiebke&ln=no">Scholz, Wiebke</a> (Innsbruck U.) ; <a href="https://cds.cern.ch/search?f=author&p=Shen%2C%20Jiali&ln=no">Shen, Jiali</a> (Helsinki U.) ; <a href="https://cds.cern.ch/search?f=author&p=Stolzenburg%2C%20Dominik&ln=no">Stolzenburg, Dominik</a> (Helsinki U.) ; <a href="https://cds.cern.ch/search?f=author&p=Tauber%2C%20Christian&ln=no">Tauber, Christian</a> (Vienna U., Dept. Math.) ; <a href="https://cds.cern.ch/search?f=author&p=Tian%2C%20Ping&ln=no">Tian, Ping</a> (Beijing Normal U.) ; <a href="https://cds.cern.ch/search?f=author&p=Tom%C3%A9%2C%20Ant%C3%B3nio&ln=no">Tomé, António</a> (UBI, Covilha) ; <a href="https://cds.cern.ch/search?f=author&p=Umo%2C%20Nsikanabasi%20Silas&ln=no">Umo, Nsikanabasi Silas</a> (KIT, Karlsruhe, IKP) ; <a href="https://cds.cern.ch/search?f=author&p=Wang%2C%20Dongyu%20S&ln=no">Wang, Dongyu S</a> (PSI, Villigen) ; <a href="https://cds.cern.ch/search?f=author&p=Wang%2C%20Yonghong&ln=no">Wang, Yonghong</a> (Helsinki U.) ; <a href="https://cds.cern.ch/search?f=author&p=Weber%2C%20Stefan%20K&ln=no">Weber, Stefan K</a> (Frankfurt U. ; CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Welti%2C%20Andr%C3%A9&ln=no">Welti, André</a> (Helsinki Inst. of Phys.) ; <a href="https://cds.cern.ch/search?f=author&p=Zauner-Wieczorek%2C%20Marcel&ln=no">Zauner-Wieczorek, Marcel</a> (Frankfurt U., FIAS ; Frankfurt U.) ; <a href="https://cds.cern.ch/search?f=author&p=Baltensperger%2C%20Urs&ln=no">Baltensperger, Urs</a> (PSI, Villigen) ; <a href="https://cds.cern.ch/search?f=author&p=Flagan%2C%20Richard%20C&ln=no">Flagan, Richard C</a> (Caltech) ; <a href="https://cds.cern.ch/search?f=author&p=Hansel%2C%20Armin&ln=no">Hansel, Armin</a> (Innsbruck U.) ; <a href="https://cds.cern.ch/search?f=author&p=Kirkby%2C%20Jasper&ln=no">Kirkby, Jasper</a> (Frankfurt U. ; CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Kulmala%2C%20Markku&ln=no">Kulmala, Markku</a> (Helsinki U. ; Helsinki Inst. of Phys. ; Beijing U. of Chem. Tech.) ; <a href="https://cds.cern.ch/search?f=author&p=Lehtipalo%2C%20Katrianne&ln=no">Lehtipalo, Katrianne</a> (Helsinki U. ; Helsinki Inst. of Phys.) ; <a href="https://cds.cern.ch/search?f=author&p=Worsnop%2C%20Douglas%20R&ln=no">Worsnop, Douglas R</a> (Helsinki U. ; New England Nucl.) ; <a href="https://cds.cern.ch/search?f=author&p=Haddad%2C%20Imad%20El&ln=no">Haddad, Imad El</a> (PSI, Villigen) ; <a href="https://cds.cern.ch/search?f=author&p=Donahue%2C%20Neil%20M&ln=no">Donahue, Neil M</a> (Carnegie Mellon U.) ; <a href="https://cds.cern.ch/search?f=author&p=Vogel%2C%20Alexander%20L&ln=no">Vogel, Alexander L</a> (Frankfurt U., FIAS ; Frankfurt U.) ; <a href="https://cds.cern.ch/search?f=author&p=K%C3%BCrten%2C%20Andreas&ln=no">Kürten, Andreas</a> (Frankfurt U., FIAS ; Frankfurt U.) ; <a href="https://cds.cern.ch/search?f=author&p=Curtius%2C%20Joachim&ln=no">Curtius, Joachim</a> (Frankfurt U., FIAS ; Frankfurt U.)</span> <span id="extension"></span> <small><i><a id="link" href="#" onclick="toggle_authors_visibility()" style="color:rgb(204,0,0);"></a></i></small><script type="text/javascript">set_up()</script></td></tr> <tr><td class="formatRecordLabel"> Publication </td><td style="padding-left:5px;">2023</td></tr> <tr><td class="formatRecordLabel"> Number of pages </td><td style="padding-left:5px;">19</td></tr> <tr><td class="formatRecordLabel"> In: </td><td style="padding-left:5px;"><a href="http://dx.doi.org/10.5194/acp-23-6613-2023"><i>Atmos. Chem. Phys.</i> 23 (2023) 6613-6631</a> </a></td></tr> <tr><td class="formatRecordLabel"> DOI </td><td style="padding-left:5px;"><a href="http://dx.doi.org/10.5194/acp-23-6613-2023" title="DOI" target="_blank">10.5194/acp-23-6613-2023</a> <tr><td class="formatRecordLabel"> Subject category </td><td style="padding-left:5px;">Chemical Physics and Chemistry</td></tr> <tr><td class="formatRecordLabel"> Accelerator/Facility, Experiment </td><td style="padding-left:5px;"><a href="https://cds.cern.ch/search?p=CLOUD&f=693__a">CLOUD</a></td></tr> <tr><td class="formatRecordLabel"> Abstract </td><td style="padding-left:5px;">Currently, the complete chemical characterization of nanoparticles (< 100 nm) represents an analytical challenge, since these particles are abundant in number but have negligible mass. Several methods for particle-phase characterization have been recently developed to better detect and infer more accurately the sources and fates of sub-100 nm particles, but a detailed comparison of different approaches is missing. Here we report on the chemical composition of secondary organic aerosol (SOA) nanoparticles from experimental studies of α-pinene ozonolysis at −50, −30, and −10 ∘C and intercompare the results measured by different techniques. The experiments were performed at the Cosmics Leaving OUtdoor Droplets (CLOUD) chamber at the European Organization for Nuclear Research (CERN). The chemical composition was measured simultaneously by four different techniques: (1) thermal desorption–differential mobility analyzer (TD–DMA) coupled to a NO3- chemical ionization–atmospheric-pressure-interface–time-of-flight (CI–APi–TOF) mass spectrometer, (2) filter inlet for gases and aerosols (FIGAERO) coupled to an I− high-resolution time-of-flight chemical ionization mass spectrometer (HRToF-CIMS), (3) extractive electrospray Na+ ionization time-of-flight mass spectrometer (EESI-TOF), and (4) offline analysis of filters (FILTER) using ultra-high-performance liquid chromatography (UHPLC) and heated electrospray ionization (HESI) coupled to an Orbitrap high-resolution mass spectrometer (HRMS). Intercomparison was performed by contrasting the observed chemical composition as a function of oxidation state and carbon number, by estimating the volatility and comparing the fraction of volatility classes, and by comparing the thermal desorption behavior (for the thermal desorption techniques: TD–DMA and FIGAERO) and performing positive matrix factorization (PMF) analysis for the thermograms. We found that the methods generally agree on the most important compounds that are found in the nanoparticles. However, they do see different parts of the organic spectrum. We suggest potential explanations for these differences: thermal decomposition, aging, sampling artifacts, etc. We applied PMF analysis and found insights of thermal decomposition in the TD–DMA and the FIGAERO.</td></tr> <tr><td class="formatRecordLabel"> Copyright/License </td><td style="padding-left:5px;">publication: © 2023-2024 Author(s) (License: <a href="https://creativecommons.org/licenses/by/4.0/">CC-BY-4.0</a>)</td></tr> </table> <br/>Corresponding record in: <a href="http://inspirehep.net/record/2765966">Inspire</a> <small> </small> <br/> <br/><br/><div align="right"><div style="padding-bottom:2px;padding-top:30px;"><span class="moreinfo" style="margin-right:10px;"> <a href="" class="moreinfo">Back to search</a> </span></div></div> <div class="bottom-left-folded"><div class="recordlastmodifiedbox" style="position:relative;margin-left:1px"> Element opprettet 2024-03-09, sist endret 2024-09-25</div></div> <div class="bottom-right-folded" style="text-align:right;padding-bottom:2px;"> <span class="moreinfo" style="margin-right:10px;"><a href="/search?ln=no&p=recid%3A2891194&rm=wrd" class="moreinfo">Lignende elementer</a></span></div> </div> </div> </div> <br/> <br /> <div class="detailedrecordminipanel"> <div class="top-left"></div><div class="top-right"></div> <div class="inside"> <div id="detailedrecordminipanelfile" style="width:33%;float:left;text-align:center;margin-top:0"> <div><small class="detailedRecordActions">Fulltekst:</small> <br /><a href="/record/2891194/files/acp-23-6613-2023.pdf"><img style="border:none" src="/img/file-icon-text-34x48.gif" alt="Last ned fulltekst" /><br />PDF</a><br /></div> </div> <div id="detailedrecordminipanelreview" style="width:30%;float:left;text-align:center"> </div> <div id="detailedrecordminipanelactions" style="width:36%;float:right;text-align:right;"> <ul class="detailedrecordactions"> <li><a href="/yourbaskets/add?ln=no&recid=2891194">Legg i egen kurv</a></li> <li>Eksporter som <a style="text-decoration:underline;font-weight:normal" href="/record/2891194/export/hx?ln=no">BibTeX</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2891194/export/hm?ln=no">MARC</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2891194/export/xm?ln=no">MARCXML</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2891194/export/xd?ln=no">DC</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2891194/export/xe?ln=no">EndNote</a>,  <a style="text-decoration:underline;font-weight:normal" href="/record/2891194/export/xn?ln=no">NLM</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2891194/export/xw?ln=no">RefWorks</a> </li> </ul> <div style='padding-left: 13px;'>  <div id="bookmark"></div> <div id="bookmark_sciencewise"></div> <style type="text/css"> #bookmark_sciencewise, #bookmark {float: left;} #bookmark_sciencewise li {padding: 2px; width: 25px;} #bookmark_sciencewise ul, #bookmark ul {list-style-image: none;} </style> <script type="text/javascript" src="/js/jquery.bookmark.min.js"></script> <style type="text/css">@import "/css/jquery.bookmark.css";</style> <script type="text/javascript">// <![CDATA[ $.bookmark.addSite('sciencewise', 'ScienceWise.info', 'https://cds.cern.ch/img/sciencewise.png', 'en', 'bookmark', 'http://sciencewise.info/bookmarks/cds:2891194/add'); $('#bookmark_sciencewise').bookmark({sites: ['sciencewise']}); $('#bookmark').bookmark({ sites: ['facebook', 'twitter', 'linkedin', 'google_plusone'], icons: '/img/bookmarks.png', url: 'https://cds.cern.ch/record/2891194', addEmail: true, title: "An intercomparison study of four different techniques for measuring the chemical composition of nanoparticles", description: "Currently, the complete chemical characterization of nanoparticles\n(<\u2009100\u2009nm) represents an analytical challenge, since these particles\nare abundant in number but have negligible mass. Several methods for\nparticle-phase characterization have been recently developed to better\ndetect and infer more accurately the sources and fates of sub-100\u2009nm\nparticles, but a detailed comparison of different approaches is missing.\nHere we report on the chemical composition of secondary organic aerosol\n(SOA) nanoparticles from experimental studies of \u03b1-pinene ozonolysis\nat \u221250, \u221230, and \u221210\u2009\u2218C and intercompare the results measured by different\ntechniques. The experiments were performed at the Cosmics Leaving OUtdoor\nDroplets (CLOUD) chamber at the European Organization for Nuclear Research\n(CERN). The chemical composition was measured simultaneously by four\ndifferent techniques: (1) thermal desorption\u2013differential mobility analyzer\n(TD\u2013DMA) coupled to a NO3- chemical ionization\u2013atmospheric-pressure-interface\u2013time-of-flight (CI\u2013APi\u2013TOF) mass\nspectrometer, (2) filter inlet for gases and aerosols (FIGAERO) coupled to an\nI\u2212 high-resolution time-of-flight chemical ionization mass spectrometer\n(HRToF-CIMS), (3) extractive electrospray Na+ ionization\ntime-of-flight mass spectrometer (EESI-TOF), and (4) offline analysis of\nfilters (FILTER) using ultra-high-performance liquid chromatography (UHPLC)\nand heated electrospray ionization (HESI) coupled to an Orbitrap\nhigh-resolution mass spectrometer (HRMS). Intercomparison was performed by\ncontrasting the observed chemical composition as a function of oxidation\nstate and carbon number, by estimating the volatility and comparing the\nfraction of volatility classes, and by comparing the thermal desorption\nbehavior (for the thermal desorption techniques: TD\u2013DMA and FIGAERO) and\nperforming positive matrix factorization (PMF) analysis for the thermograms.\nWe found that the methods generally agree on the most important compounds\nthat are found in the nanoparticles. However, they do see different parts of\nthe organic spectrum. We suggest potential explanations for these\ndifferences: thermal decomposition, aging, sampling artifacts, etc. We\napplied PMF analysis and found insights of thermal decomposition in the\nTD\u2013DMA and the FIGAERO." }); // ]]> </script>  </div> </div> <div style="clear:both;margin-bottom: 0;"></div> </div> <div class="bottom-left"></div><div class="bottom-right"></div> </div> </div></div> <footer id="footer" class="pagefooter clearfix">  <div class="pagefooterstripeleft"> CERN Document Server :: <a class="footer" href="https://cds.cern.ch/?ln=no">Søk</a> :: <a class="footer" href="https://cds.cern.ch/submit?ln=no">Send inn</a> :: <a class="footer" href="https://cds.cern.ch/youraccount/display?ln=no">Brukerinnstillinger</a> :: <a class="footer" href="https://cds.cern.ch/help/?ln=no">Hjelp</a> :: <a class="footer" href="https://cern.service-now.com/service-portal?id=privacy_policy&se=CDS-Service" target="_blank">Privacy Notice</a> <br /> Powered by <a class="footer" href="http://invenio-software.org/">Invenio</a> <br /> Vedlikeholdt av <a class="footer" href="https://cern.service-now.com/service-portal?id=service_element&name=CDS-Service">CDS Service</a> - Need help? 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