{"id":43496,"date":"2022-05-11T00:00:00","date_gmt":"2022-05-11T00:00:00","guid":{"rendered":"https:\/\/discover.restek.com\/uncategorized\/optimized-polycyclic-aromatic-hydrocarbon-pah-analysis-by-gc-ms\/"},"modified":"2026-01-28T16:46:58","modified_gmt":"2026-01-28T16:46:58","slug":"optimized-polycyclic-aromatic-hydrocarbon-pah-analysis-by-gc-ms","status":"publish","type":"post","link":"https:\/\/discover.restek.com\/de\/articles\/evfa3822\/optimized-polycyclic-aromatic-hydrocarbon-pah-analysis-by-gc-ms","title":{"rendered":"Optimized Polycyclic Aromatic Hydrocarbon (PAH) Analysis by GC-MS"},"content":{"rendered":"\n<div class=\"wp-block-columns has-border-color is-layout-flex wp-container-core-columns-is-layout-47c7f9e9 wp-block-columns-is-layout-flex\" style=\"border-color:#e67e23;border-width:1px;padding-top:10px;padding-right:20px;padding-bottom:10px;padding-left:20px\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"has-text-align-center has-text-color has-link-color wp-elements-d07479615fc2c2e18b99c4a5b3110c52\" style=\"color:#e67e23\"><strong><em>Our Rxi-SVOCms column was named Best New Separations Product of the Year in the SelectScience Scientists&#8217; Choice Awards<\/em><\/strong><\/p>\n<\/div>\n<\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Rxi-SVOCms column provides good separation and response for critical environmental PAH compounds.<\/li>\n\n\n\n<li>Low column bleed ensures accuracy for late-eluting target analytes.<\/li>\n\n\n\n<li>Split injection SIM analysis minimizes inlet discrimination.<\/li>\n<\/ul>\n\n\n\n<p>Polycyclic aromatic hydrocarbons (PAH) are ubiquitous environmental contaminants that form both naturally and due to human activities, primarily through the incomplete combustion of carbon-containing materials. Because some polycyclic aromatic hydrocarbons are carcinogenic, trace-level monitoring of air, water, and soil samples is essential for assessing exposure. PAH analysis by GC-MS using an Rxi-SVOCms column under the optimized conditions shown below provides effective detection of the most relevant compounds.<\/p>\n\n\n\n<p>Using SIM mode and split injection to minimize inlet discrimination for a challenging coal tar sample, good chromatographic performance was seen for a range of PAH compounds. Volatile early eluting compounds exhibit good peak shapes and responses while low column bleed minimizes background interference and improves sensitivity for late eluting compounds. In addition, the efficiency and selectivity of the Rxi-SVOCms column provided good separation of isobaric PAHs, such as benzo[b]fluoranthene and benzo[k]fluoranthene. Good resolution was also obtained for indeno[123-cd]pyrene and dibenz[ah]anthracene (even when there is a disproportionate response), which minimizes the potential for biased results and reporting false positives.<\/p>\n\n\n<div class=\"wp-block-custom-chromatogram-article-top\"><div class=\"chromatogram-article-placeholder\"><div class=\"figure-heading\"><strong>Figure 1:<\/strong>\u00a0The efficiency and selectivity of Rxi-SVOCms columns ensure excellent separation of critical pairs for PAH analysis by GC-MS.<\/div><div class='chromatogram-article-inner-full'><div class=\"chromatogram-article-inner\">\n<div class=\"wp-block-custom-chromatogram-article\"><div class=\"wp-block-custom-chromatogram-article\"><div class=\"chromatogram-image wide-image\"><img decoding=\"async\" src=\"https:\/\/ez.restek.com\/images\/cgram\/gc_ev1606.png\" alt=\"Complex Mixture of Polycyclic Aromatic Hydrocarbons from Coal Tar on Rxi-SVOCms (SIM)\" title=\"-\"><\/div><p class=\"article-id\" style=\"text-align:center\"> GC_EV1606<\/p><div class=\"chromatogram-peaks\"><h4>Peaks<\/h4><table class=\"peaks col-lg-6 col-12 peak-50\">\n<thead><tr><th><\/th><th style=\"text-align: left;width: 75px\">Peaks<\/th><th style=\"text-align: center;width: 50px\">t<sub>R<\/sub> (min)<\/th><\/tr><\/thead>\n<tbody><tr><td class=\"num\">1.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Naphthalene\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/91-20-3\/Naphthalene\" target=\"_blank\" rel=\"noopener\">Naphthalene<\/a><\/td><td class=\"oth\">6.27<\/td><\/tr>\n<tr><td class=\"num\">2.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for 2-Methylnaphthalene\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/91-57-6\/2-Methylnaphthalene\" target=\"_blank\" rel=\"noopener\">2-Methylnaphthalene<\/a><\/td><td class=\"oth\">7.09<\/td><\/tr>\n<tr><td class=\"num\">3.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for 1-Methylnaphthalene\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/90-12-0\/1-Methylnaphthalene\" target=\"_blank\" rel=\"noopener\">1-Methylnaphthalene<\/a><\/td><td class=\"oth\">7.21<\/td><\/tr>\n<tr><td class=\"num\">4.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Biphenyl\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/92-52-4\/Biphenyl\" target=\"_blank\" rel=\"noopener\">Biphenyl<\/a><\/td><td class=\"oth\">7.66<\/td><\/tr>\n<tr><td class=\"num\">5.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for 2,6-Dimethylnaphthalene\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/581-42-0\/2,6-Dimethylnaphthalene\" target=\"_blank\" rel=\"noopener\">2,6-Dimethylnaphthalene<\/a><\/td><td class=\"oth\">7.84<\/td><\/tr>\n<tr><td class=\"num\">6.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Acenaphthylene\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/208-96-8\/Acenaphthylene\" target=\"_blank\" rel=\"noopener\">Acenaphthylene<\/a><\/td><td class=\"oth\">8.17<\/td><\/tr>\n<tr><td class=\"num\">7.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for (IS) Acenaphthene-d10\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/15067-26-2\/(IS) Acenaphthene-d10\" target=\"_blank\" rel=\"noopener\">(IS) Acenaphthene-d10<\/a><\/td><td class=\"oth\">8.35<\/td><\/tr>\n<tr><td class=\"num\">8.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Acenaphthene\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/83-32-9\/Acenaphthene\" target=\"_blank\" rel=\"noopener\">Acenaphthene<\/a><\/td><td class=\"oth\">8.39<\/td><\/tr>\n<tr><td class=\"num\">9.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for 2,3,5-Trimethylnaphthalene\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/2245-38-7\/2,3,5-Trimethylnaphthalene\" target=\"_blank\" rel=\"noopener\">2,3,5-Trimethylnaphthalene<\/a><\/td><td class=\"oth\">8.86<\/td><\/tr>\n<tr><td class=\"num\">10.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Fluorene\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/86-73-7\/Fluorene\" target=\"_blank\" rel=\"noopener\">Fluorene<\/a><\/td><td class=\"oth\">9.02<\/td><\/tr>\n<tr><td class=\"num\">11.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Dibenzothiophene\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/132-65-0\/Dibenzothiophene\" target=\"_blank\" rel=\"noopener\">Dibenzothiophene<\/a><\/td><td class=\"oth\">10.03<\/td><\/tr>\n<tr><td class=\"num\">12.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for (IS) Phenanthrene-D10\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/1517-22-2\/(IS) Phenanthrene-D10\" target=\"_blank\" rel=\"noopener\">(IS) Phenanthrene-D10<\/a><\/td><td class=\"oth\">10.16<\/td><\/tr>\n<tr><td class=\"num\">13.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Phenanthrene\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/85-01-8\/Phenanthrene\" target=\"_blank\" rel=\"noopener\">Phenanthrene<\/a><\/td><td class=\"oth\">10.19<\/td><\/tr>\n<\/tbody><\/table>\n<table class=\"peaks col-lg-6 col-12 peak-50\"><thead><tr><th><\/th><th style=\"text-align: left;width: 75px\">Peaks<\/th><th style=\"text-align: center;width: 50px\">t<sub>R<\/sub> (min)<\/th><\/tr><\/thead><tbody>\n<tr><td class=\"num\">14.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Anthracene\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/120-12-7\/Anthracene\" target=\"_blank\" rel=\"noopener\">Anthracene<\/a><\/td><td class=\"oth\">10.25<\/td><\/tr>\n<tr><td class=\"num\">15.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for 1-Methylphenanthrene\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/832-69-9\/1-Methylphenanthrene\" target=\"_blank\" rel=\"noopener\">1-Methylphenanthrene<\/a><\/td><td class=\"oth\">10.95<\/td><\/tr>\n<tr><td class=\"num\">16.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Fluoranthene\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/206-44-0\/Fluoranthene\" target=\"_blank\" rel=\"noopener\">Fluoranthene<\/a><\/td><td class=\"oth\">11.65<\/td><\/tr>\n<tr><td class=\"num\">17.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Pyrene\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/129-00-0\/Pyrene\" target=\"_blank\" rel=\"noopener\">Pyrene<\/a><\/td><td class=\"oth\">11.92<\/td><\/tr>\n<tr><td class=\"num\">18.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Benz[a]anthracene\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/56-55-3\/Benz[a]anthracene\" target=\"_blank\" rel=\"noopener\">Benz[a]anthracene<\/a><\/td><td class=\"oth\">13.46<\/td><\/tr>\n<tr><td class=\"num\">19.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for (IS) Chrysene-D12\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/1719-03-5\/(IS) Chrysene-D12\" target=\"_blank\" rel=\"noopener\">(IS) Chrysene-D12<\/a><\/td><td class=\"oth\">13.47<\/td><\/tr>\n<tr><td class=\"num\">20.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Chrysene\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/218-01-9\/Chrysene\" target=\"_blank\" rel=\"noopener\">Chrysene<\/a><\/td><td class=\"oth\">13.51<\/td><\/tr>\n<tr><td class=\"num\">21.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Benzo[b]fluoranthene*\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/205-99-2\/Benzo[b]fluoranthene\" target=\"_blank\" rel=\"noopener\">Benzo[b]fluoranthene*<\/a><\/td><td class=\"oth\">15.14<\/td><\/tr>\n<tr><td class=\"num\">22.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Benzo[k]fluoranthene\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/207-08-9\/Benzo[k]fluoranthene\" target=\"_blank\" rel=\"noopener\">Benzo[k]fluoranthene<\/a><\/td><td class=\"oth\">15.19<\/td><\/tr>\n<tr><td class=\"num\">23.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for (SS) Benzo[a]pyrene-d12\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/63466-71-7\/(SS) Benzo[a]pyrene-d12\" target=\"_blank\" rel=\"noopener\">(SS) Benzo[a]pyrene-d12<\/a><\/td><td class=\"oth\">15.66<\/td><\/tr>\n<tr><td class=\"num\">24.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Benzo[a]pyrene\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/50-32-8\/Benzo[a]pyrene\" target=\"_blank\" rel=\"noopener\">Benzo[a]pyrene<\/a><\/td><td class=\"oth\">15.70<\/td><\/tr>\n<tr><td class=\"num\">25.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Indeno[1,2,3-cd]pyrene\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/193-39-5\/Indeno[1,2,3-cd]pyrene\" target=\"_blank\" rel=\"noopener\">Indeno[1,2,3-cd]pyrene<\/a><\/td><td class=\"oth\">17.78<\/td><\/tr>\n<tr><td class=\"num\">26.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Dibenz[a,h]anthracene\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/53-70-3\/Dibenz[a,h]anthracene\" target=\"_blank\" rel=\"noopener\">Dibenz[a,h]anthracene<\/a><\/td><td class=\"oth\">17.83<\/td><\/tr>\n<tr><td class=\"num\">27.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Benzo[ghi]perylene\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/191-24-2\/Benzo[ghi]perylene\" target=\"_blank\" rel=\"noopener\">Benzo[ghi]perylene<\/a><\/td><td class=\"oth\">18.27<\/td><\/tr>\n<\/tbody><\/table><div class=\"peaknotes\">* Benzo[b]fluoranthene and benzo[j]fluoranthene coelution.<\/div><\/div><div class=\"chromatogram-conditions\"><h4>Conditions<\/h4><div class=\"conditions-container container-fluid\"><div class=\"row\"><table class=\"conditions col-lg-6 col-12\"><tr><th class=\"conditions_header\" scope=\"row\">Column<\/th><td>Rxi-SVOCms, 30 m, 0.25 mm ID, 0.25 \u00b5m (<a target=\"_blank\" href=\"https:\/\/www.restek.com\/p\/16623?utm_source=chromatograms&amp;utm_medium=link&amp;utm_campaign=GC_EV1606\" rel=\"noopener\">cat.# 16623<\/a>)<\/td><\/tr><tr class=\"cgram_header_row\"><th class=\"conditions_header\" scope=\"row\">Standard\/Sample<\/th><td>NIST SRM 1597a &#8211; complex mixture of polycyclic aromatic hydrocarbons from coal tar<\/td><\/tr>\n<tr><th class=\"sub conditions_header\" scope=\"row\">Diluent:<\/th><td>Dichloromethane<\/td><\/tr><tr class=\"cgram_header_row\"><th class=\"conditions_header\" scope=\"row\">Injection<\/th><td><\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Inj. Vol.:<\/th><td>1 \u00b5L split (split ratio 20:1)<\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Liner:<\/th><td>Topaz 4.0 mm ID single taper inlet liner with wool (<a target=\"_blank\" href=\"https:\/\/www.restek.com\/p\/23303?utm_source=chromatograms&amp;utm_medium=link&amp;utm_campaign=GC_EV1606\" rel=\"noopener\">cat.# 23303<\/a>)<\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Inj. Temp.:<\/th><td>250 \u00b0C<\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Split Vent Flow Rate:<\/th><td>24 mL\/min<\/td><\/tr><tr class=\"cgram_header_row\"><th class=\"conditions_header\" scope=\"row\" colspan=\"2\">Oven<\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Oven Temp.:<\/th><td>40 &#176;C (hold 0.5 min) to 280 &#176;C at 20 &#176;C\/min to 330 &#176;C at 6 &#176;C\/min (hold 4 min)<\/td><\/tr><tr class=\"cgram_header_row\"><th class=\"conditions_header\" scope=\"row\">Carrier Gas<\/th><td>He, constant flow<\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Flow Rate:<\/th><td>1.2 mL\/min<\/td><\/tr><\/table><table class=\"conditions col-lg-6 col-12\"><tr><th class=\"conditions_header\" scope=\"row\">Detector<\/th><td>MS<\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Mode:<\/th><td>SIM<\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">SIM Program:<\/th><td><\/td><\/tr><tr><td style=\"text-align:left\" colspan=\"2\"><table class=\"conditions_sim\"><thead><tr><th style=\"padding: 0 5px\">Group<\/th><th style=\"padding: 0 5px\">Start Time<br \/>(min)<\/th><th style=\"padding: 0 5px\">Ion(s) (m\/z)<\/th><th style=\"padding: 0 5px\">Dwell (ms)<\/th><\/tr><\/thead><tbody><tr><td style=\"vertical-align:top\">1<\/td><td style=\"vertical-align:top\">5.00<\/td><td>127.05, 128.05, 129.00 <\/td><td>10<\/td><\/tr><tr><td style=\"vertical-align:top\">2<\/td><td style=\"vertical-align:top\">6.75<\/td><td>115.10, 139.00, 141.00, 142.05 <\/td><td>10<\/td><\/tr><tr><td style=\"vertical-align:top\">3<\/td><td style=\"vertical-align:top\">7.47<\/td><td>141.00, 152.00, 153.05, 154.05, 155.05, 156.10, 162.10, 164.10 <\/td><td>10<\/td><\/tr><tr><td style=\"vertical-align:top\">4<\/td><td style=\"vertical-align:top\">8.03<\/td><td>150.00, 151.05, 152.05, 153.05, 154.10, 162.10, 164.10 <\/td><td>10<\/td><\/tr><tr><td style=\"vertical-align:top\">5<\/td><td style=\"vertical-align:top\">8.66<\/td><td>153.05, 155.10, 163.05, 164.10, 165.05, 166.05, 169.10, 170.10 <\/td><td>10<\/td><\/tr><tr><td style=\"vertical-align:top\">6<\/td><td style=\"vertical-align:top\">9.62<\/td><td>139.00, 151.95, 176.10, 177.10, 178.10, 179.10, 183.95, 185.00, 188.10, 189.10 <\/td><td>10<\/td><\/tr><tr><td style=\"vertical-align:top\">7<\/td><td style=\"vertical-align:top\">10.71<\/td><td>189.05, 190.05, 191.10, 192.10 <\/td><td>10<\/td><\/tr><tr><td style=\"vertical-align:top\">8<\/td><td style=\"vertical-align:top\">11.37<\/td><td>200.10, 201.10, 202.10, 203.05 <\/td><td>10<\/td><\/tr><tr><td style=\"vertical-align:top\">9<\/td><td style=\"vertical-align:top\">11.81<\/td><td>200.10, 201.05, 202.05, 203.05 <\/td><td>10<\/td><\/tr><tr><td style=\"vertical-align:top\">10<\/td><td style=\"vertical-align:top\">12.84<\/td><td>114.00, 120.00, 226.10, 227.10, 228.10, 229.10, 240.10 <\/td><td>10<\/td><\/tr><tr><td style=\"vertical-align:top\">11<\/td><td style=\"vertical-align:top\">14.44<\/td><td>126.00, 132.00, 250.10, 252.10, 253.10, 264.00 <\/td><td>10<\/td><\/tr><tr><td style=\"vertical-align:top\">12<\/td><td style=\"vertical-align:top\">15.51<\/td><td>126.00, 132.00, 250.05, 252.05, 253.05, 264.00 <\/td><td>10<\/td><\/tr><tr><td style=\"vertical-align:top\">13<\/td><td style=\"vertical-align:top\">16.95<\/td><td>137.95, 139.00, 274.05, 276.10, 277.10, 278.10, 279.10 <\/td><td>10<\/td><\/tr><tr><td style=\"vertical-align:top\">14<\/td><td style=\"vertical-align:top\">18.10<\/td><td>138.00, 274.05, 276.10, 277.10 <\/td><td>10<\/td><\/tr><\/tbody><\/table><\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Transfer Line Temp.:<\/th><td>280 \u00b0C<\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Analyzer Type:<\/th><td>Quadrupole <\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Source Type:<\/th><td>Extractor <\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Extractor Lens:<\/th><td>6 mm ID<\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Source Temp.:<\/th><td>330 \u00b0C<\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Quad Temp.:<\/th><td>150 \u00b0C<\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Tune Type:<\/th><td>DFTPP <\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Ionization Mode:<\/th><td>EI <\/td><\/tr><tr class=\"cgram_header_row\"><th class=\"conditions_header\" scope=\"row\">Instrument<\/th><td>Agilent 7890B GC &amp; 5977A MSD<\/td><\/tr><tr class=\"cgram_header_row\"><th class=\"conditions_header\" scope=\"row\">Sample Preparation<\/th><td>NIST SRM 1597a was diluted 5x in dichloromethane. Isotope-labeled IS\/SS are 20 pg on-column. Samples were aliquoted into amber 2 mL, 9 mm short-cap, screw-thread vials (<a target=\"_blank\" href=\"https:\/\/www.restek.com\/p\/21143?utm_source=chromatograms&amp;utm_medium=link&amp;utm_campaign=GC_EV1606\" rel=\"noopener\">cat.# 21143<\/a>) containing glass Big Mouth inserts (<a target=\"_blank\" href=\"https:\/\/www.restek.com\/p\/21782?utm_source=chromatograms&amp;utm_medium=link&amp;utm_campaign=GC_EV1606\" rel=\"noopener\">cat.# 21782<\/a>) and sealed with 2.0 mL, 9 mm short-cap, screw-vial closures (<a target=\"_blank\" href=\"https:\/\/www.restek.com\/p\/23842?utm_source=chromatograms&amp;utm_medium=link&amp;utm_campaign=GC_EV1606\" rel=\"noopener\">cat.# 23842<\/a>).<\/td><\/tr><tr class=\"cgram_header_row\"><th class=\"conditions_header\" scope=\"row\">Notes<\/th><td>The internal standard and surrogate standard mass on column is 20 pg.<\/td><\/tr><\/table><\/div><\/div><\/div><div class=\"chromatogram-pdf-link\"><a href=\"https:\/\/ez.restek.com\/images\/cgram\/gc_ev1606.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"18\" height=\"18\" viewBox=\"0 0 18 18\"><g data-name=\"Group 2996\"><path data-name=\"Rectangle 1246\" d=\"M0 0h18v18H0z\" style=\"fill: none;\"><\/path><\/g><g data-name=\"Group 2997\"><path data-name=\"Path 729\" d=\"M13.412 11.4v2.017H5.345V11.4H4v2.017a1.349 1.349 0 0 0 1.345 1.345h8.068a1.349 1.349 0 0 0 1.345-1.345V11.4zm-.672-2.694-.948-.948-1.741 1.735V4H8.706v5.493L6.965 7.758l-.948.948 3.361 3.361z\" transform=\"translate(-.437 -.414)\" style=\"fill: rgb(13, 123, 196);\"><\/path><\/g><\/svg>Download PDF<\/a><\/div><\/div><\/div>\n<\/div><\/div><\/div>\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n        <div class=\"cpb\">\n            <h3 class=\"cpb-heading\">Related Products<\/h3>\n            <hr class=\"cpb-heading-underline\" \/>\n            <div class=\"cpb-list\">\n                                    <div class=\"cpb-item\">\n                        <div class=\"cpb-col cpb-col--left\">\n                            <a class=\"cpb-catalog\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/de.restek.com\/p\/16623\">                                Catalog No. 16623                            <\/a>                        <\/div>\n                        <div class=\"cpb-col cpb-col--middle\">\n                            <div class=\"cpb-title\">Rxi-SVOCms GC Kapillars\u00e4ule, 30 m, 0.25 mm ID, 0.25 \u00b5m<\/div>\n                        <\/div>\n                        <div class=\"cpb-col cpb-col--right\">\n                                                            <a class=\"cpb-view-btn\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/de.restek.com\/p\/16623\">Produkt anzeigen<\/a>\n                                                    <\/div>\n                    <\/div>\n                                    <div class=\"cpb-item\">\n                        <div class=\"cpb-col cpb-col--left\">\n                            <a class=\"cpb-catalog\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/de.restek.com\/p\/23303\">                                Catalog No. 23303                            <\/a>                        <\/div>\n                        <div class=\"cpb-col cpb-col--middle\">\n                            <div class=\"cpb-title\">Topaz, Single Taper Inlet Liner, 4.0 mm x 6.5 x 78.5, f\u00fcr Agilent GCs, mit Quarzwolle, Premium-Deaktivierung, 5er Pack<\/div>\n                        <\/div>\n                        <div class=\"cpb-col cpb-col--right\">\n                                                            <a class=\"cpb-view-btn\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/de.restek.com\/p\/23303\">Produkt anzeigen<\/a>\n                                                    <\/div>\n                    <\/div>\n                                    <div class=\"cpb-item\">\n                        <div class=\"cpb-col cpb-col--left\">\n                            <a class=\"cpb-catalog\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/de.restek.com\/p\/21143\">                                Catalog No. 21143                            <\/a>                        <\/div>\n                        <div class=\"cpb-col cpb-col--middle\">\n                            <div class=\"cpb-title\">Short-Cap-Vial mit graduiertem Markierungsfeld, 9-425 Screw-Thread, 2.0 mL, 9 mm, 12 x 32 (nur Vial), braun, 1000er Pack<\/div>\n                        <\/div>\n                        <div class=\"cpb-col cpb-col--right\">\n                                                            <a class=\"cpb-view-btn\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/de.restek.com\/p\/21143\">Produkt anzeigen<\/a>\n                                                    <\/div>\n                    <\/div>\n                                    <div class=\"cpb-item\">\n                        <div class=\"cpb-col cpb-col--left\">\n                            <a class=\"cpb-catalog\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/de.restek.com\/p\/21782\">                                Catalog No. 21782                            <\/a>                        <\/div>\n                        <div class=\"cpb-col cpb-col--middle\">\n                            <div class=\"cpb-title\">Vial-Eins\u00e4tze, Glas, Big Mouth mit Bodenfeder, 50 \u03bcL, 1000er Pack<\/div>\n                        <\/div>\n                        <div class=\"cpb-col cpb-col--right\">\n                                                            <a class=\"cpb-view-btn\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/de.restek.com\/p\/21782\">Produkt anzeigen<\/a>\n                                                    <\/div>\n                    <\/div>\n                                    <div class=\"cpb-item\">\n                        <div class=\"cpb-col cpb-col--left\">\n                            <a class=\"cpb-catalog\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/de.restek.com\/p\/23842\">                                Catalog No. 23842                            <\/a>                        <\/div>\n                        <div class=\"cpb-col cpb-col--middle\">\n                            <div class=\"cpb-title\">Short Screw Kappen, Polypropylen, gerippt, Screw-Thread, PTFE\/Silikon-beschichtet, f\u00fcr Agilent 7693A, blau, vormontiert, 2.0 mL, 9 mm, 1000er Pack<\/div>\n                        <\/div>\n                        <div class=\"cpb-col cpb-col--right\">\n                                                            <a class=\"cpb-view-btn\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/de.restek.com\/p\/23842\">Produkt anzeigen<\/a>\n                                                    <\/div>\n                    <\/div>\n                                    <div class=\"cpb-item\">\n                        <div class=\"cpb-col cpb-col--left\">\n                            <a class=\"cpb-catalog\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/de.restek.com\/p\/28500\">                                Catalog No. 28500                            <\/a>                        <\/div>\n                        <div class=\"cpb-col cpb-col--middle\">\n                            <div class=\"cpb-title\">Restek elektronischer Leckdetektor<\/div>\n                        <\/div>\n                        <div class=\"cpb-col cpb-col--right\">\n                                                            <a class=\"cpb-view-btn\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/de.restek.com\/p\/28500\">Produkt anzeigen<\/a>\n                                                    <\/div>\n                    <\/div>\n                                    <div class=\"cpb-item\">\n                        <div class=\"cpb-col cpb-col--left\">\n                            <a class=\"cpb-catalog\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/de.restek.com\/p\/26023\">                                Catalog No. 26023                            <\/a>                        <\/div>\n                        <div class=\"cpb-col cpb-col--middle\">\n                            <div class=\"cpb-title\">SPE-Disks, Resprep-Harz, 47 mm, Faser, Styrol\/DVB-Harz, 20er Pck.<\/div>\n                        <\/div>\n                        <div class=\"cpb-col cpb-col--right\">\n                                                            <a class=\"cpb-view-btn\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/de.restek.com\/p\/26023\">Produkt anzeigen<\/a>\n                                                    <\/div>\n                    <\/div>\n                            <\/div>\n        <\/div>\n        \n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Polycyclic aromatic hydrocarbons (PAH) are some of the most difficult compounds to separate in semivolatiles methods. Rxi-SVOCms columns provide optimized resolution of 23 priority pollutants under the conditions established here.<\/p>\n","protected":false},"author":11,"featured_media":6727,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kadence_starter_templates_imported_post":false,"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"footnotes":""},"categories":[7],"tags":[],"industries-application":[2161],"post-badge":[],"resource-type":[2623],"product-library":[2372,2384,2386],"resource-technique":[2294,2301],"ppma_author":[414],"class_list":["post-43496","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-articles","industries-application-environmental","resource-type-featured-application","product-library-gas-chromatography-products","product-library-gc-columns","product-library-inlet-supplies","resource-technique-gas-chromatography-gc","resource-technique-mass-spectrometry-ms"],"acf":[],"taxonomy_info":{"category":[{"value":7,"label":"Articles"}],"industries-application":[{"value":2161,"label":"Environmental"}],"resource-type":[{"value":2623,"label":"Featured Application"}],"product-library":[{"value":2372,"label":"Gas Chromatography Products"},{"value":2384,"label":"GC Columns"},{"value":2386,"label":"Inlet Supplies"}],"resource-technique":[{"value":2294,"label":"Gas Chromatography (GC)"},{"value":2301,"label":"Mass Spectrometry (MS)"}]},"featured_image_src_large":["https:\/\/discover.restek.com\/wp-content\/uploads\/feature-EVFA3822-1024x536.jpg",1024,536,true],"author_info":{"display_name":"Restek Corporation","author_link":"https:\/\/discover.restek.com\/de\/author\/restek-corporation\/"},"comment_info":0,"category_info":[{"term_id":7,"name":"Articles","slug":"articles","term_group":0,"term_taxonomy_id":7,"taxonomy":"category","description":"","parent":0,"count":469,"filter":"raw","cat_ID":7,"category_count":469,"category_description":"","cat_name":"Articles","category_nicename":"articles","category_parent":0}],"tag_info":false,"authors":[{"term_id":414,"user_id":11,"is_guest":0,"slug":"restek-corporation","display_name":"Restek Corporation","avatar_url":{"url":"https:\/\/discover.restek.com\/wp-content\/uploads\/Restek_Favicon_300x300.jpg","url2x":"https:\/\/discover.restek.com\/wp-content\/uploads\/Restek_Favicon_300x300.jpg"},"0":null,"1":"","2":"","3":"","4":"","5":"","6":"","7":"","8":""}],"_links":{"self":[{"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/posts\/43496","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/comments?post=43496"}],"version-history":[{"count":10,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/posts\/43496\/revisions"}],"predecessor-version":[{"id":85559,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/posts\/43496\/revisions\/85559"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/media\/6727"}],"wp:attachment":[{"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/media?parent=43496"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/categories?post=43496"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/tags?post=43496"},{"taxonomy":"industries-application","embeddable":true,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/industries-application?post=43496"},{"taxonomy":"post-badge","embeddable":true,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/post-badge?post=43496"},{"taxonomy":"resource-type","embeddable":true,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/resource-type?post=43496"},{"taxonomy":"product-library","embeddable":true,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/product-library?post=43496"},{"taxonomy":"resource-technique","embeddable":true,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/resource-technique?post=43496"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/ppma_author?post=43496"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}