{"id":60794,"date":"2025-11-07T15:10:36","date_gmt":"2025-11-07T15:10:36","guid":{"rendered":"https:\/\/discover.restek.com\/?p=60794"},"modified":"2026-01-08T14:22:14","modified_gmt":"2026-01-08T14:22:14","slug":"large-volume-injection-of-pesticides-using-low-pressure-gas-chromatography","status":"publish","type":"post","link":"https:\/\/discover.restek.com\/fr\/posters-presentations-fr\/gnot5325\/large-volume-injection-of-pesticides-using-low-pressure-gas-chromatography","title":{"rendered":"Large Volume Injection of Pesticides Using Low-Pressure Gas Chromatography"},"content":{"rendered":"\n<p>Concurrent Solvent Recondensation Large Sample Volume splitless injection (CSR-LVSI, or LVI) is a gas chromatography sample injection technique that overcomes the limitation of using a smaller sample volume of 1 to 2 \u00b5L, which is typical of conventional splitless injections. Low-Pressure Gas Chromatography (LPGC) is a novel technique that has been successfully applied for multiresidue pesticide detection and quantification. The LPGC configuration with the restrictor\/guard column facilitates the requirements of a CSR-LVSI and has the potential to improve the sensitivity and lower detection limits. Peak shapes of large-volume injections using both acetonitrile and acetonitrile\u2013toluene were evaluated in the range of 1\u201325 \u00b5L, and the relationship between the peak area and injection volume was established. The large volume injections (>10 \u00b5L) resulted in peak splitting when acetonitrile was used. The later eluting peaks were affected more while the effect of increased volume on peak areas for larger than 10 \u00b5L injections was negligible. The calibration parameters were compared for 1 and 5 \u00b5L injection. The limits of detection and other parameters were comparable between the two injection volumes. This presentation will describe both CSR-LVSI and LPGC and demonstrate the applicability of combining these techniques using a variety of solvents.<\/p>\n\n\n\n<div data-wp-interactive=\"core\/file\" class=\"wp-block-file\"><object data-wp-bind--hidden=\"!state.hasPdfPreview\" hidden class=\"wp-block-file__embed\" data=\"https:\/\/discover.restek.com\/wp-content\/uploads\/poster-aoac-2022-large-volume-injection-of-pesticides-using-low-pressure-gas-chromatography.pdf\" type=\"application\/pdf\" style=\"width:100%;height:600px\" aria-label=\"Embed of poster-aoac-2022-large-volume-injection-of-pesticides-using-low-pressure-gas-chromatography.\"><\/object><a id=\"wp-block-file--media-3f8ae909-6396-4b51-b757-e09f24e340f3\" href=\"https:\/\/discover.restek.com\/wp-content\/uploads\/poster-aoac-2022-large-volume-injection-of-pesticides-using-low-pressure-gas-chromatography.pdf\">poster-aoac-2022-large-volume-injection-of-pesticides-using-low-pressure-gas-chromatography<\/a><a href=\"https:\/\/discover.restek.com\/wp-content\/uploads\/poster-aoac-2022-large-volume-injection-of-pesticides-using-low-pressure-gas-chromatography.pdf\" class=\"wp-block-file__button wp-element-button\" download aria-describedby=\"wp-block-file--media-3f8ae909-6396-4b51-b757-e09f24e340f3\">Download<\/a><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Concurrent Solvent Recondensation Large Sample Volume splitless injection (CSR-LVSI, or LVI) is a gas chromatography sample injection technique that overcomes the limitation of using a smaller sample volume of 1 to 2 \u00b5L, which is typical of conventional splitless injections. Low-Pressure Gas Chromatography (LPGC) is a novel technique that has been successfully applied for multiresidue pesticide detection and quantification. The LPGC configuration with the restrictor\/guard column facilitates the requirements of a CSR-LVSI and has the potential to improve the sensitivity and lower detection limits. Peak shapes of large-volume injections using both acetonitrile and acetonitrile\u2013toluene were evaluated in the range of 1\u201325 \u00b5L, and the relationship between the peak area and injection volume was established. The large volume injections (>10 \u00b5L) resulted in peak splitting when acetonitrile was used. The later eluting peaks were affected more while the effect of increased volume on peak areas for larger than 10 \u00b5L injections was negligible. The calibration parameters were compared for 1 and 5 \u00b5L injection. The limits of detection and other parameters were comparable between the two injection volumes. This presentation will describe both CSR-LVSI and LPGC and demonstrate the applicability of combining these techniques using a variety of solvents.<\/p>\n","protected":false},"author":50,"featured_media":0,"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":[812],"tags":[],"industries-application":[],"post-badge":[],"resource-type":[],"product-library":[],"resource-technique":[],"hf_cat_post":[],"ppma_author":[593,591,439],"class_list":["post-60794","post","type-post","status-publish","format-standard","hentry","category-posters-presentations-fr"],"acf":[],"taxonomy_info":{"category":[{"value":812,"label":"Posters &amp; Presentations"}]},"featured_image_src_large":false,"author_info":{"display_name":"Jana Hepner, PhD","author_link":"https:\/\/discover.restek.com\/fr\/author\/jana-hepner-phd\/"},"comment_info":0,"category_info":[{"term_id":812,"name":"Posters &amp; Presentations","slug":"posters-presentations-fr","term_group":0,"term_taxonomy_id":812,"taxonomy":"category","description":"","parent":0,"count":118,"filter":"raw","cat_ID":812,"category_count":118,"category_description":"","cat_name":"Posters &amp; Presentations","category_nicename":"posters-presentations-fr","category_parent":0}],"tag_info":false,"authors":[{"term_id":593,"user_id":0,"is_guest":1,"slug":"joe-konschnik","display_name":"Joe Konschnik","avatar_url":{"url":"https:\/\/discover.restek.com\/wp-content\/uploads\/people-konschnik-joe.jpg","url2x":"https:\/\/discover.restek.com\/wp-content\/uploads\/people-konschnik-joe.jpg"},"0":null,"1":"","2":"","3":"","4":"","5":"","6":"","7":"","8":""},{"term_id":591,"user_id":50,"is_guest":0,"slug":"jana-hepner-phd","display_name":"Jana Hepner, PhD","avatar_url":{"url":"https:\/\/discover.restek.com\/wp-content\/uploads\/people-hepner-jana.jpg","url2x":"https:\/\/discover.restek.com\/wp-content\/uploads\/people-hepner-jana.jpg"},"0":null,"1":"","2":"","3":"","4":"","5":"","6":"","7":"","8":""},{"term_id":439,"user_id":19,"is_guest":0,"slug":"jaap-de-zeeuw","display_name":"Jaap de Zeeuw","avatar_url":{"url":"https:\/\/discover.restek.com\/wp-content\/uploads\/people-de-zeeuw-jaap.jpg","url2x":"https:\/\/discover.restek.com\/wp-content\/uploads\/people-de-zeeuw-jaap.jpg"},"0":null,"1":"","2":"","3":"","4":"","5":"","6":"","7":"","8":""}],"_links":{"self":[{"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/posts\/60794","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/users\/50"}],"replies":[{"embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/comments?post=60794"}],"version-history":[{"count":3,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/posts\/60794\/revisions"}],"predecessor-version":[{"id":63133,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/posts\/60794\/revisions\/63133"}],"wp:attachment":[{"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/media?parent=60794"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/categories?post=60794"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/tags?post=60794"},{"taxonomy":"industries-application","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/industries-application?post=60794"},{"taxonomy":"post-badge","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/post-badge?post=60794"},{"taxonomy":"resource-type","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/resource-type?post=60794"},{"taxonomy":"product-library","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/product-library?post=60794"},{"taxonomy":"resource-technique","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/resource-technique?post=60794"},{"taxonomy":"hf_cat_post","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/hf_cat_post?post=60794"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/ppma_author?post=60794"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}