{"id":43510,"date":"2020-11-01T13:30:00","date_gmt":"2020-11-01T13:30:00","guid":{"rendered":"https:\/\/discover.restek.com\/uncategorized\/seven-epa-methods-on-one-column-pair-using-a-micro-ecd\/"},"modified":"2026-02-11T22:06:50","modified_gmt":"2026-02-11T22:06:50","slug":"seven-epa-methods-on-one-column-pair-using-a-micro-ecd","status":"publish","type":"post","link":"https:\/\/discover.restek.com\/ja\/articles-zh\/evss1013\/seven-epa-methods-on-one-column-pair-using-a-micro-ecd","title":{"rendered":"Seven EPA Methods on One Column Pair Using a micro-ECD"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">Analyze Pesticides, PCBs, Herbicides and More on a Single Rtx-CLPesticides Column Set, Using a micro-ECD and Dual Column Analysis<\/h2>\n\n\n\n<p>Get fast separations without sacrificing resolution by using Restek\u2019s proprietary Rtx-CLPesticides and Rtx-CLPesticides2 columns for multiple environmental methods. Instead of changing columns between GC-ECD methods, you can save time by analyzing chlorinated pesticides, PCBs, herbicides, and other halogenated compounds on a single column set using dual column analysis and an Agilent micro-ECD. As shown here, Rtx-CLPesticides and Rtx-CLPesticides2 columns have a unique selectivity and are ideal for multiple GC-ECD methods. Compare them to your current column set and you\u2019ll see the Restek advantage!<\/p>\n\n\n\n<p>Rtx-CLPesticides columns offer the best overall performance for organochlorine pesticides analysis, as well as many other dual column analysis GC-ECD methods (0.32 mm ID columns).<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th><strong>Method Compound List<\/strong><\/th><th><strong>Column Pair<\/strong><\/th><th><strong>Analysis Time (min)<\/strong><\/th><th><strong>Coelutions<\/strong><\/th><th><strong>Restek Advantage<\/strong><\/th><\/tr><\/thead><tbody><tr><th rowspan=\"3\"><a href=\"https:\/\/discover.restek.com\/en\/articles\/evar4498\/method-8081b-organochlorine-pesticides-analysis-by-gc\" data-type=\"link\" data-id=\"https:\/\/discover.restek.com\/en\/articles\/evar4498\/method-8081b-organochlorine-pesticides-analysis-by-gc\"><strong>8081B<\/strong><br><strong>(Organochlorine pesticides analysis)<\/strong><\/a><\/th><td>Rtx-CLPesticides \/<br>Rtx-CLPesticides2<\/td><td>7 \/ 7<\/td><td>0 \/ 0<\/td><td rowspan=\"3\">Increase sample throughput with 7 min analyses and baseline resolution.<\/td><\/tr><tr><td>Competitor A<br>column 1 \/ column 2<\/td><td>7 \/ 8<\/td><td>0 \/ 1<\/td><\/tr><tr><td>Competitor B<br>column 1 \/ column 2<\/td><td>10 \/ 9<\/td><td>0 \/ 0<\/td><\/tr><tr><th colspan=\"5\">&nbsp;<\/th><\/tr><tr><th rowspan=\"3\"><strong><a href=\"https:\/\/discover.restek.com\/en\/articles\/evar4500\/method-8081b-organochlorine-pesticides-analysis-by-gc-extended\" data-type=\"link\" data-id=\"https:\/\/discover.restek.com\/en\/articles\/evar4500\/method-8081b-organochlorine-pesticides-analysis-by-gc-extended\">8081B (extended)(Organochlorine pesticides analysis)<\/a><\/strong><\/th><td>Rtx-CLPesticides \/<br>Rtx-CLPesticides2<\/td><td>24 \/ 23<\/td><td>1 \/ 2<\/td><td rowspan=\"3\">Best balance of speed and selectivity. <br>All compounds are resolved on at least one column.<\/td><\/tr><tr><td>Competitor A<br>column 1 \/ column 2<\/td><td>27 \/ 29<\/td><td>0 \/ 3<\/td><\/tr><tr><td>Competitor B<br>column 1 \/ column 2<\/td><td>NDP \/ 16<\/td><td>NDP \/ 3<\/td><\/tr><tr><th colspan=\"5\">&nbsp;<\/th><\/tr><tr><th rowspan=\"3\"><strong><a href=\"https:\/\/discover.restek.com\/articles\/evar4502\/method-8082a-polychlorinated-biphenyls-pcbs-analysis-by-gc\">8082A<br>(Polychlorinated biphenyls [PCBs], Aroclors analysis)<\/a><\/strong><\/th><td>Rtx-CLPesticides \/<br>Rtx-CLPesticides2<\/td><td>7 \/ 7<\/td><td>n\/a<\/td><td rowspan=\"3\">Fast PCB analysis times.<\/td><\/tr><tr><td>Competitor A<br>column 1 \/ column 2<\/td><td>6 \/ 7<\/td><td>n\/a<\/td><\/tr><tr><td>Competitor B<br>column 1 \/ column 2<\/td><td>24 \/ 21<\/td><td>n\/a<\/td><\/tr><tr><th colspan=\"5\">&nbsp;<\/th><\/tr><tr><th rowspan=\"3\"><strong><a href=\"https:\/\/discover.restek.com\/articles\/evar4501\/method-8151a-chlorinated-herbicides-analysis-by-gc-using-methylation-or-pentafluorobenzylation-derivatization\" data-type=\"link\" data-id=\"https:\/\/discover.restek.com\/articles\/evar4501\/method-8151a-chlorinated-herbicides-analysis-by-gc-using-methylation-or-pentafluorobenzylation-derivatization\">8151A<br>(Chlorinated herbicides analysis)<\/a><\/strong><\/th><td>Rtx-CLPesticides \/<br>Rtx-CLPesticides2<\/td><td>13 \/ 13<\/td><td>1 \/ 0<\/td><td rowspan=\"3\">More elution order changes improve confidence in confirmational results.<\/td><\/tr><tr><td>Competitor A<br>column 1 \/ column 2<\/td><td>13 \/ 13<\/td><td>0 \/ 0<\/td><\/tr><tr><td>Competitor B<br>column 1 \/ column 2<\/td><td>16 \/ 15<\/td><td>1 \/ 1<\/td><\/tr><tr><th colspan=\"5\">&nbsp;<\/th><\/tr><tr><th rowspan=\"3\"><strong><a href=\"https:\/\/discover.restek.com\/articles\/evar4499\/method-504-1-edb-dbcp-and-123tcp-analysis-in-water-by-microextraction-and-gc\" data-type=\"link\" data-id=\"https:\/\/discover.restek.com\/articles\/evar4499\/method-504-1-edb-dbcp-and-123tcp-analysis-in-water-by-microextraction-and-gc\">504.1<br>(EDB, DBCP, TCP analysis)<\/a><\/strong><\/th><td>Rtx-CLPesticides \/<br>Rtx-CLPesticides2<\/td><td>6 \/ 6<\/td><td>0 \/ 0<\/td><td rowspan=\"3\">Reliably separate analytes from trihalomethane interferences.<\/td><\/tr><tr><td>Competitor A<br>column 1 \/ column 2<\/td><td>6 \/ 6<\/td><td>0 \/ 0<\/td><\/tr><tr><td>Competitor B<br>column 1 \/ column 2<\/td><td>NDP<\/td><td>NDP<\/td><\/tr><tr><th colspan=\"5\">&nbsp;<\/th><\/tr><tr><th rowspan=\"3\"><strong><a href=\"https:\/\/discover.restek.com\/articles\/evar4504\/method-505-analysis-of-organohalide-pesticides-and-commercial-pcbs-in-water-by-microextraction-and-gc\" data-type=\"link\" data-id=\"https:\/\/discover.restek.com\/articles\/evar4504\/method-505-analysis-of-organohalide-pesticides-and-commercial-pcbs-in-water-by-microextraction-and-gc\">505<br>(Organohalide pesticides analysis)<\/a><\/strong><\/th><td>Rtx-CLPesticides \/<br>Rtx-CLPesticides2<\/td><td>18 \/ 18.5<\/td><td>1 \/ 1<\/td><td rowspan=\"3\">All compounds resolved on at least one column.<\/td><\/tr><tr><td>Competitor A<br>column 1 \/ column 2<\/td><td>14 \/ 14<\/td><td>0 \/ 1<\/td><\/tr><tr><td>Competitor B<br>column 1 \/ column 2<\/td><td>35 \/ 36<\/td><td>1 \/ 2<\/td><\/tr><tr><th colspan=\"5\">&nbsp;<\/th><\/tr><tr><th rowspan=\"3\"><strong><a href=\"https:\/\/discover.restek.com\/articles\/evar4503\/method-508-1-determination-of-chlorinated-pesticides-and-herbicides-analysis-by-liquid-solid-extraction-and-electron-capture-gc\" data-type=\"link\" data-id=\"https:\/\/discover.restek.com\/articles\/evar4503\/method-508-1-determination-of-chlorinated-pesticides-and-herbicides-analysis-by-liquid-solid-extraction-and-electron-capture-gc\">508.1<br>(Chlorinated pesticides, herbicides, organohalides analysis)<\/a><\/strong><br><strong><br><\/strong><\/th><td>Competitor A<br>column 1 \/ column 2<\/td><td>21 \/ 23<\/td><td>0 \/ 3<\/td><td rowspan=\"3\">Good balance of speed and resolution.<\/td><\/tr><tr><td>Competitor A<br>column 1 \/ column 2<\/td><td>21 \/ 23<\/td><td>0 \/ 3<\/td><\/tr><tr><td>Competitor B<br>column 1 \/ column 2<\/td><td>18 \/ 17<\/td><td>2 \/ 4<\/td><\/tr><tr><th colspan=\"5\">&nbsp;<\/th><\/tr><tr><th rowspan=\"3\"><strong><a href=\"https:\/\/discover.restek.com\/articles\/evar4505\/method-552-2-determination-of-haloacetic-acids-and-dalapon-analysis-in-drinking-water-by-ion-exchange-liquid-solid-extraction-and-gc-with-an-electron-capture-detector\" data-type=\"link\" data-id=\"https:\/\/discover.restek.com\/articles\/evar4505\/method-552-2-determination-of-haloacetic-acids-and-dalapon-analysis-in-drinking-water-by-ion-exchange-liquid-solid-extraction-and-gc-with-an-electron-capture-detector\">552.2<br>(Haloacetic acids, dalapon analysis)<\/a><\/strong><br><strong><br><\/strong><\/th><td>Rtx-CLPesticides \/<br>Rtx-CLPesticides2<\/td><td>12 \/ 12<\/td><td>0 \/ 0<\/td><td rowspan=\"3\">No coelutions\u2014get accurate results for compounds that coelute on other columns.<\/td><\/tr><tr><td>Competitor A<br>column 1 \/ column 2<\/td><td>8 \/ 9<\/td><td>1 \/ 1<\/td><\/tr><tr><td>Competitor B<br>column 1 \/ column 2<\/td><td>NDP \/ 10<\/td><td>NDP \/ 1<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Comparison based on published competitor data. All columns tested were 0.32 mm ID. NDP = no data published.<\/p>\n\n\n\n<p>NOTE: Analyzing dirty or derivatized samples can contaminate your column. Restek does not recommend analyzing trace-level pesticide samples following derivatized samples (e.g., Methods 8151A and 552.2) without first performing inlet maintenance. Standard steps include trimming the guard column and changing the inlet liner, seal, O-ring, and septum.<\/p>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Get improved resolution, faster analyses, and less downtime by using Rtx-CLPesticides and Rtx-CLPesticides2 columns for multiple GC\/ECD methods. Instead of changing columns between methods, you can save time by analyzing chlorinated pesticides, PCBs, herbicides, and other halogenated compounds on a single column set. Rtx-CLPesticides and Rtx-CLPesticides2 columns have a unique selectivity and outperform other column sets offered specifically for multiple GC\/ECD methods.<\/p>\n","protected":false},"author":11,"featured_media":6751,"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":[786],"tags":[],"industries-application":[2161],"post-badge":[],"resource-type":[],"product-library":[2372,2384],"resource-technique":[2294],"ppma_author":[414],"class_list":["post-43510","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-articles-zh","industries-application-environmental","product-library-gas-chromatography-products","product-library-gc-columns","resource-technique-gas-chromatography-gc"],"acf":[],"taxonomy_info":{"category":[{"value":786,"label":"\u6587\u7ae0"}],"industries-application":[{"value":2161,"label":"Environmental"}],"product-library":[{"value":2372,"label":"Gas Chromatography Products"},{"value":2384,"label":"GC Columns"}],"resource-technique":[{"value":2294,"label":"Gas Chromatography (GC)"}]},"featured_image_src_large":["https:\/\/discover.restek.com\/wp-content\/uploads\/feature-EVSS1013-1024x536.jpg",1024,536,true],"author_info":{"display_name":"Restek Corporation","author_link":"https:\/\/discover.restek.com\/ja\/author\/restek-corporation\/"},"comment_info":0,"category_info":[{"term_id":786,"name":"\u6587\u7ae0","slug":"articles-zh","term_group":0,"term_taxonomy_id":786,"taxonomy":"category","description":"","parent":0,"count":465,"filter":"raw","cat_ID":786,"category_count":465,"category_description":"","cat_name":"\u6587\u7ae0","category_nicename":"articles-zh","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\/ja\/wp-json\/wp\/v2\/posts\/43510","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/discover.restek.com\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/discover.restek.com\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/discover.restek.com\/ja\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/discover.restek.com\/ja\/wp-json\/wp\/v2\/comments?post=43510"}],"version-history":[{"count":8,"href":"https:\/\/discover.restek.com\/ja\/wp-json\/wp\/v2\/posts\/43510\/revisions"}],"predecessor-version":[{"id":87291,"href":"https:\/\/discover.restek.com\/ja\/wp-json\/wp\/v2\/posts\/43510\/revisions\/87291"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/discover.restek.com\/ja\/wp-json\/wp\/v2\/media\/6751"}],"wp:attachment":[{"href":"https:\/\/discover.restek.com\/ja\/wp-json\/wp\/v2\/media?parent=43510"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/discover.restek.com\/ja\/wp-json\/wp\/v2\/categories?post=43510"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/discover.restek.com\/ja\/wp-json\/wp\/v2\/tags?post=43510"},{"taxonomy":"industries-application","embeddable":true,"href":"https:\/\/discover.restek.com\/ja\/wp-json\/wp\/v2\/industries-application?post=43510"},{"taxonomy":"post-badge","embeddable":true,"href":"https:\/\/discover.restek.com\/ja\/wp-json\/wp\/v2\/post-badge?post=43510"},{"taxonomy":"resource-type","embeddable":true,"href":"https:\/\/discover.restek.com\/ja\/wp-json\/wp\/v2\/resource-type?post=43510"},{"taxonomy":"product-library","embeddable":true,"href":"https:\/\/discover.restek.com\/ja\/wp-json\/wp\/v2\/product-library?post=43510"},{"taxonomy":"resource-technique","embeddable":true,"href":"https:\/\/discover.restek.com\/ja\/wp-json\/wp\/v2\/resource-technique?post=43510"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/discover.restek.com\/ja\/wp-json\/wp\/v2\/ppma_author?post=43510"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}