Declining trends of polychlorinated dibenzo-p-dioxins, dibenzofurans and non-ortho PCBs in Canadian Arctic seabirds

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• 作者：Birgit M. Braune^a ; ^{birgit.braune@canada.ca} ; Mark L. Mallory^b
• 关键词：Canadian Arctic ; Seabird eggs ; Dioxins ; Temporal trends
• 刊名：Environmental Pollution
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：220
• 期：part_PA
• 页码：557-566
• 全文大小：1553 K
• 卷排序：220

文摘

PCDDs, PCDFs and non-ortho PCBs were measured in seabird eggs from Canada's Arctic. ΣPCDD, ΣPCDF and ΣnPCB declined from 1975 to 2014 in murre and fulmar eggs. Toxic equivalents (TEQs) also declined in murre and fulmar eggs from 1975 to 2014. The major PCDD/F congener was 2,3,4,7,8-PnCDF; PCB-126 was the main nPCB congener. nPCB-TEQ, and PCDF-TEQ in fulmar eggs, were major contributors to the TEQ profile.