{"id":629,"date":"2018-05-31T22:48:41","date_gmt":"2018-05-31T22:48:41","guid":{"rendered":"http:\/\/www.clowersresearch.com\/main\/?p=629"},"modified":"2018-05-31T22:49:23","modified_gmt":"2018-05-31T22:49:23","slug":"ambient-alkylphosphonic-acid-vapor-detection-and-ion-traps","status":"publish","type":"post","link":"http:\/\/www.clowersresearch.com\/main\/ambient-alkylphosphonic-acid-vapor-detection-and-ion-traps\/","title":{"rendered":"Ambient Alkylphosphonic Acid Vapor Detection and Ion Traps"},"content":{"rendered":"\n\t\t<style type=\"text\/css\">\n\t\t\t#gallery-1 {\n\t\t\t\tmargin: auto;\n\t\t\t}\n\t\t\t#gallery-1 .gallery-item {\n\t\t\t\tfloat: left;\n\t\t\t\tmargin-top: 10px;\n\t\t\t\ttext-align: center;\n\t\t\t\twidth: 100%;\n\t\t\t}\n\t\t\t#gallery-1 img {\n\t\t\t\tborder: 2px solid #cfcfcf;\n\t\t\t}\n\t\t\t#gallery-1 .gallery-caption {\n\t\t\t\tmargin-left: 0;\n\t\t\t}\n\t\t\t\/* see gallery_shortcode() in wp-includes\/media.php *\/\n\t\t<\/style>\n\t\t<div id='gallery-1' class='gallery galleryid-629 gallery-columns-1 gallery-size-large'><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='http:\/\/www.clowersresearch.com\/main\/ambient-alkylphosphonic-acid-vapor-detection-and-ion-traps\/pa_all_v3\/'><img width=\"1024\" height=\"249\" src=\"http:\/\/www.clowersresearch.com\/main\/wp-content\/uploads\/2018\/05\/PA_all_v3-1024x249.png\" class=\"attachment-large size-large\" alt=\"\" loading=\"lazy\" srcset=\"http:\/\/www.clowersresearch.com\/main\/wp-content\/uploads\/2018\/05\/PA_all_v3-1024x249.png 1024w, http:\/\/www.clowersresearch.com\/main\/wp-content\/uploads\/2018\/05\/PA_all_v3-300x73.png 300w, http:\/\/www.clowersresearch.com\/main\/wp-content\/uploads\/2018\/05\/PA_all_v3-768x187.png 768w, http:\/\/www.clowersresearch.com\/main\/wp-content\/uploads\/2018\/05\/PA_all_v3-250x61.png 250w, http:\/\/www.clowersresearch.com\/main\/wp-content\/uploads\/2018\/05\/PA_all_v3-150x36.png 150w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a>\n\t\t\t<\/dt><\/dl><br style=\"clear: both\" \/><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='http:\/\/www.clowersresearch.com\/main\/figure6\/'><img width=\"992\" height=\"702\" src=\"http:\/\/www.clowersresearch.com\/main\/wp-content\/uploads\/2018\/05\/Figure6.png\" class=\"attachment-large size-large\" alt=\"\" loading=\"lazy\" srcset=\"http:\/\/www.clowersresearch.com\/main\/wp-content\/uploads\/2018\/05\/Figure6.png 992w, http:\/\/www.clowersresearch.com\/main\/wp-content\/uploads\/2018\/05\/Figure6-300x212.png 300w, http:\/\/www.clowersresearch.com\/main\/wp-content\/uploads\/2018\/05\/Figure6-768x543.png 768w, http:\/\/www.clowersresearch.com\/main\/wp-content\/uploads\/2018\/05\/Figure6-212x150.png 212w, http:\/\/www.clowersresearch.com\/main\/wp-content\/uploads\/2018\/05\/Figure6-150x106.png 150w\" sizes=\"(max-width: 992px) 100vw, 992px\" \/><\/a>\n\t\t\t<\/dt><\/dl><br style=\"clear: both\" \/>\n\t\t<\/div>\n\n<p>Atmospheric flow tube-mass spectrometry (AFT-MS) first emerged in 2012 as an ambient vapor sampling technique developed by <a href=\"https:\/\/pubs.acs.org\/doi\/abs\/10.1021\/ac302828g\">Ewing et al.<\/a> and applied to the sensing of trace quantities of RDX molecules clustered with nitrate ions. This iteration of AFT-MS used selected-ion monitoring (SIM) during analysis via a triple-quadrupole mass spectrometer and subsequently has been applied to vapor analysis of <a href=\"https:\/\/pubs.acs.org\/doi\/abs\/10.1021\/ac402513r\">other explosives adducted with nitrate<\/a> as well as <a href=\"https:\/\/pubs.acs.org\/doi\/10.1021\/acs.analchem.8b01265\">positively-charged organophosphorus species clustered with amines as proton-bound dimers<\/a>. Building upon these initial AFT-MS experiments, we have recently applied the atmospheric flow tube ionization method to the detection of alkylphosphonic acids from methanol solution headspace and adducted with nitrate and nitrate-nitric acid species via linear ion trap mass spectrometry. This was performed in an effort not only to demonstrate the application of ion trap MS systems with AFT-MS, but also to characterize the gas-phase ion chemistry of a homologous series of alkylphosphonic acids including methylphosphonic acid (MPA), which is an environmental pollutant and hydrolysis product of some chemical agents. Our article, &#8220;<a href=\"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/rcm.8177\">Characterization of Alkylphosphonic Acid Vapors Using Atmospheric Flow Tube-Ion Trap Mass Spectrometry<\/a>,&#8221; can be found in <em>Rapid Communications in Mass Spectrometry<\/em>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Atmospheric flow tube-mass spectrometry (AFT-MS) first emerged in 2012 as an ambient vapor sampling technique developed by Ewing et al. and applied to the sensing of trace quantities of RDX molecules clustered with nitrate ions. This iteration of AFT-MS used selected-ion monitoring (SIM) during analysis via a triple-quadrupole mass spectrometer and subsequently has been applied [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":628,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"spay_email":""},"categories":[17,12,22],"tags":[],"jetpack_featured_media_url":"http:\/\/www.clowersresearch.com\/main\/wp-content\/uploads\/2018\/05\/LTQ_scheme_v4.png","_links":{"self":[{"href":"http:\/\/www.clowersresearch.com\/main\/wp-json\/wp\/v2\/posts\/629"}],"collection":[{"href":"http:\/\/www.clowersresearch.com\/main\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.clowersresearch.com\/main\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.clowersresearch.com\/main\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.clowersresearch.com\/main\/wp-json\/wp\/v2\/comments?post=629"}],"version-history":[{"count":7,"href":"http:\/\/www.clowersresearch.com\/main\/wp-json\/wp\/v2\/posts\/629\/revisions"}],"predecessor-version":[{"id":642,"href":"http:\/\/www.clowersresearch.com\/main\/wp-json\/wp\/v2\/posts\/629\/revisions\/642"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.clowersresearch.com\/main\/wp-json\/wp\/v2\/media\/628"}],"wp:attachment":[{"href":"http:\/\/www.clowersresearch.com\/main\/wp-json\/wp\/v2\/media?parent=629"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.clowersresearch.com\/main\/wp-json\/wp\/v2\/categories?post=629"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.clowersresearch.com\/main\/wp-json\/wp\/v2\/tags?post=629"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}