{"id":43508,"date":"2025-03-25T00:00:00","date_gmt":"2025-03-25T00:00:00","guid":{"rendered":"https:\/\/discover.restek.com\/uncategorized\/is-current-generation-of-polychlorinated-biphenyls-exceeding-peak-production-of-the-1970s\/"},"modified":"2025-11-19T19:40:04","modified_gmt":"2025-11-19T19:40:04","slug":"is-current-generation-of-polychlorinated-biphenyls-exceeding-peak-production-of-the-1970s","status":"publish","type":"post","link":"https:\/\/discover.restek.com\/fr\/articles\/evot4460\/is-current-generation-of-polychlorinated-biphenyls-exceeding-peak-production-of-the-1970s","title":{"rendered":"Is Current Generation of Polychlorinated Biphenyls Exceeding Peak Production of the 1970s?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><strong>Author(s):<\/strong> David Megson<sup>1,2<\/sup>, Grace Idowu<sup>1,3<\/sup>, Courtney D. Sandau<sup>1,4<\/sup><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1. Chemistry Matters Inc., Calgary, Canada, 2. Manchester Metropolitan University, Manchester, UK, 3. Restek Corporation, 4. Mount Royal University, Calgary, Canada<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Published By:<\/strong> Science of The Total Environment<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Volume:<\/strong> 924<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Year of Publication:<\/strong> 2024<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Link:<\/strong> <a href=\"https:\/\/doi.org\/10.1016\/j.scitotenv.2024.171436\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/doi.org\/10.1016\/j.scitotenv.2024.171436<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Abstract:<\/strong> Polychlorinated biphenyls (PCBs) are man-made chemicals that were once widely produced as commercial mixtures for various industrial applications. PCBs were later recognized as environmental pollutants and health hazards, leading to their global phase-out and strict regulations on their production, use, and disposal. Most investigations on PCBs focus on measuring the specific PCBs present in commercial mixtures or marker compounds representing those mixtures. However, there are new sources of PCBs that are gaining more attention. These \u2018by-product PCBs\u2019 are inadvertently produced in certain chemical and product formulations. Our estimates show that U.S. legislation currently permits the generation of more by-product PCBs (~100 million lb. (~45,000 Tonnes) per year) than during peak commercial production of the 1970s (85 million lb. (~39,000 Tonnes) per year). These PCBs are currently going un-detected in most investigations. Therefore, they may be posing a growing, unmonitored environmental and human health risk. Most people assume PCBs to be legacy pollutants from historically formulated commercial mixtures. However, our research suggests that due to the emergence of by-product PCBs they may need to be reconsidered as an emerging pollutant of concern.<\/p>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>The emergence of by-product PCBs may be posing a growing, unmonitored environmental and human health risk. This research suggests these compounds may need to be reconsidered as an emerging pollutant of concern.<\/p>\n","protected":false},"author":28,"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":[7],"tags":[],"industries-application":[2254,2255,2253,2766,2258],"post-badge":[],"resource-type":[568],"product-library":[2517,2519],"resource-technique":[2332],"ppma_author":[669,448,666],"class_list":["post-43508","post","type-post","status-publish","format-standard","hentry","category-articles","industries-application-analisi-dellaria","industries-application-acque-potabili-acque-reflue","industries-application-ambientale","industries-application-semivolatiles","industries-application-analisi-del-suolo-sedimenti-biota","resource-type-third-party-peer-reviewed-publications","product-library-prodotti-per-cromatografia-liquida","product-library-prodotti-per-la-preparazione-del-campione","resource-technique-gascromatografia-gc"],"acf":[],"taxonomy_info":{"category":[{"value":7,"label":"Articles"}],"industries-application":[{"value":2254,"label":"Analisi dell\u2019Aria"},{"value":2255,"label":"Acque Potabili e Acque Reflue"},{"value":2253,"label":"Ambientale"},{"value":2766,"label":"Semivolatiles"},{"value":2258,"label":"Analisi del Suolo, Sedimenti, Biota"}],"resource-type":[{"value":568,"label":"Third-Party &amp; Peer Reviewed Publications"}],"product-library":[{"value":2517,"label":"Prodotti per Cromatografia Liquida"},{"value":2519,"label":"Prodotti per la Preparazione del Campione"}],"resource-technique":[{"value":2332,"label":"Gascromatografia (GC)"}]},"featured_image_src_large":false,"author_info":{"display_name":"Grace Idowu, PhD","author_link":"https:\/\/discover.restek.com\/fr\/author\/grace-idowu\/"},"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":455,"filter":"raw","cat_ID":7,"category_count":455,"category_description":"","cat_name":"Articles","category_nicename":"articles","category_parent":0}],"tag_info":false,"authors":[{"term_id":669,"user_id":0,"is_guest":1,"slug":"david-megson","display_name":"David Megson","avatar_url":"https:\/\/secure.gravatar.com\/avatar\/?s=96&d=mm&r=g","author_category":"1","first_name":"David","last_name":"Megson","user_url":"","job_title":"","description":"Chemistry Matters Inc., Calgary, Canada. Manchester Metropolitan University, Manchester, UK"},{"term_id":448,"user_id":28,"is_guest":0,"slug":"grace-idowu","display_name":"Grace Idowu, PhD","avatar_url":{"url":"https:\/\/discover.restek.com\/wp-content\/uploads\/people-idowu-grace.jpg","url2x":"https:\/\/discover.restek.com\/wp-content\/uploads\/people-idowu-grace.jpg"},"author_category":"1","first_name":"Grace","last_name":"Idowu, PhD","user_url":"","job_title":"","description":"Dr. Grace Idowu was formerly with Restek as a principal scientist in the GC applications laboratory. She received her PhD in chemistry from the University of Manitoba, Canada; her master\u2019s degree in environmental and petroleum geochemistry from Newcastle University, UK; and her bachelor of technology degree in pure and applied chemistry from Ladoke Akintola University, Nigeria. Grace's doctoral and post-doctoral research focused on the development and validation of GC methods for polycyclic aromatic compounds in environmental matrices. She has extensive experience developing analytical methods for GC-MS, GC-MS\/MS, and GCxGC-MS, and her current research focuses primarily on persistent organic pollutants in environmental matrices."},{"term_id":666,"user_id":0,"is_guest":1,"slug":"courtney-d-sandau","display_name":"Courtney D. Sandau","avatar_url":"https:\/\/secure.gravatar.com\/avatar\/?s=96&d=mm&r=g","author_category":"1","first_name":"Courtney D.","last_name":"Sandau","user_url":"","job_title":"","description":"Chemistry Matters Inc., Calgary, Canada. Mount Royal University, Calgary, Canada"}],"_links":{"self":[{"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/posts\/43508","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\/28"}],"replies":[{"embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/comments?post=43508"}],"version-history":[{"count":3,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/posts\/43508\/revisions"}],"predecessor-version":[{"id":66284,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/posts\/43508\/revisions\/66284"}],"wp:attachment":[{"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/media?parent=43508"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/categories?post=43508"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/tags?post=43508"},{"taxonomy":"industries-application","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/industries-application?post=43508"},{"taxonomy":"post-badge","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/post-badge?post=43508"},{"taxonomy":"resource-type","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/resource-type?post=43508"},{"taxonomy":"product-library","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/product-library?post=43508"},{"taxonomy":"resource-technique","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/resource-technique?post=43508"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/ppma_author?post=43508"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}