{"id":2623,"date":"2003-12-22T20:39:09","date_gmt":"2003-12-23T02:39:09","guid":{"rendered":"https:\/\/kermitmurray.com\/murray\/?p=2623"},"modified":"2019-08-22T20:46:39","modified_gmt":"2019-08-23T01:46:39","slug":"nitrocellulose-matrix-for-ir-maldi-of-pahss","status":"publish","type":"post","link":"https:\/\/kermitmurray.com\/research\/2003\/12\/nitrocellulose-matrix-for-ir-maldi-of-pahss\/","title":{"rendered":"A nitrocellulose matrix for infrared matrix-assisted laser desorption\/ionization of polycyclic aromatic hydrocarbons"},"content":{"rendered":"\n<div class=\"wp-block-caxton-grid relative\"><div class=\"absolute absolute--fill\"><div class=\"cover bg-center absolute absolute--fill\" style=\"background-color:;background-image:linear-gradient( );\"><\/div><div class=\"absolute absolute--fill\" style=\"background-color:;background-image:linear-gradient( );opacity:1;\"><\/div><\/div><div class=\"relative caxton-columns caxton-grid-block\" style=\"padding-top:0;padding-left:0;padding-bottom:0;padding-right:0;grid-template-columns:repeat(12, 1fr)\" data-tablet-css=\"padding-left:em;padding-right:em;\" data-mobile-css=\"padding-left:em;padding-right:em;\">\n<div class=\"wp-block-caxton-section relative\" style=\"grid-area:span 1\/span 12\"><div class=\"absolute absolute--fill\"><div class=\"cover bg-center absolute absolute--fill\" style=\"background-color:;background-image:linear-gradient( );\"><\/div><div class=\"absolute absolute--fill\" style=\"background-color:;background-image:linear-gradient( );opacity:1;\"><\/div><\/div><div class=\"relative caxton-section-block\" style=\"padding-top:5px;padding-left:5px;padding-bottom:5px;padding-right:5px\" data-mobile-css=\"padding-left:1em;padding-right:1em;\" data-tablet-css=\"padding-left:1em;padding-right:1em;\">\n<p>S.N. Jackson, S.M. Dutta, K.K. Murray, &#8220;A nitrocellulose matrix for infrared matrix-assisted laser desorption\/ionization of polycyclic aromatic hydrocarbons,&#8221;\u00a0<em>Rapid Commun. Mass Spectrom.<\/em><strong>18<\/strong>\u00a0(2004) 228\u2013230. doi:<a href=\"http:\/\/doi.org\/10.1002\/rcm.1296\">10.1002\/rcm.1296<\/a>.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Abstract<\/h4>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"alignright is-resized\"><a href=\"https:\/\/kermitmurray.com\/murray\/?attachment_id=2625\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kermitmurray.com\/murray\/wp-content\/uploads\/2019\/08\/Fig2-848x1024.gif\" alt=\"IR-MALDI mass spectra of benzo[a]pyrene with a nitrocellulose matrix \" class=\"wp-image-2625\" width=\"636\" height=\"768\" srcset=\"https:\/\/kermitmurray.com\/research\/wp-content\/uploads\/2019\/08\/Fig2-848x1024.gif 848w, https:\/\/kermitmurray.com\/research\/wp-content\/uploads\/2019\/08\/Fig2-248x300.gif 248w, https:\/\/kermitmurray.com\/research\/wp-content\/uploads\/2019\/08\/Fig2-768x928.gif 768w, https:\/\/kermitmurray.com\/research\/wp-content\/uploads\/2019\/08\/Fig2-1568x1894.gif 1568w\" sizes=\"auto, (max-width: 636px) 100vw, 636px\" \/><\/a><figcaption>IR-MALDI mass spectra of benzo[a]pyrene with a nitrocellulose matrix at the indicated wavelengths between 2.45 and 3.85 mm. The spectra are an average of five laser shots and are plotted on the same scale.<\/figcaption><\/figure><\/div>\n\n\n\n<p>Infrared\nmatrix-assisted laser desorption\/ionization (IR-MALDI) of low molecular weight\npolycylic aromatic hydrocarbons (PAHs) was performed using a 3 \u00b5m mid-infrared\nlaser and nitrocellulose as the matrix.&nbsp;\nNo other liquid or solid matrix material was added. Positive ion mass\nspectra obtained with the nitrocellulose matrix contain an intense molecular\nion peak with no interference from matrix or alkali cations. PAH mass spectra\nwere obtained at wavelengths between 2.44 to 3.88 mm with the best performance between 2.5 and 3.0 \u00b5m and near 3.6 \u00b5m. The\nrelative intensities of the analyte signal at the different wavelengths is\nconsistent with absorption of the IR radiation by the nitrocellulose with a\npossible additional contribution due to the absorption of residual water or\nsolvent. <\/p>\n<\/div><\/div>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":2625,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[134,5],"tags":[9,153,155,154],"class_list":["post-2623","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-lsu","category-publication","tag-maldi","tag-opo","tag-pah","tag-wavelength","entry"],"_links":{"self":[{"href":"https:\/\/kermitmurray.com\/research\/wp-json\/wp\/v2\/posts\/2623","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kermitmurray.com\/research\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kermitmurray.com\/research\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kermitmurray.com\/research\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/kermitmurray.com\/research\/wp-json\/wp\/v2\/comments?post=2623"}],"version-history":[{"count":4,"href":"https:\/\/kermitmurray.com\/research\/wp-json\/wp\/v2\/posts\/2623\/revisions"}],"predecessor-version":[{"id":2628,"href":"https:\/\/kermitmurray.com\/research\/wp-json\/wp\/v2\/posts\/2623\/revisions\/2628"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/kermitmurray.com\/research\/wp-json\/wp\/v2\/media\/2625"}],"wp:attachment":[{"href":"https:\/\/kermitmurray.com\/research\/wp-json\/wp\/v2\/media?parent=2623"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kermitmurray.com\/research\/wp-json\/wp\/v2\/categories?post=2623"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kermitmurray.com\/research\/wp-json\/wp\/v2\/tags?post=2623"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}