Polychlorinated Naphthalenes, -Biphenyls, -Dibenzo-p-dioxins, and -Dibenzofurans in Double-Crested Cormorants and Herring Gulls from Michigan Waters of the Great Lakes

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• 作者：Kurunthachalam Kannan ; Klara Hilscherova ; Takashi Imagawa ; Nobuyoshi Yamashita ; Lisa L. Williams ; and John P. Giesy
• 刊名：Environmental Science & Technology
• 出版年：2001
• 出版时间：February 1, 2001
• 年：2001
• 卷：35
• 期：3
• 页码：441 - 447
• 全文大小：128K
• 年卷期：v.35,no.3(February 1, 2001)
• ISSN：1520-5851

文摘

Concentrations of polychlorinated dibenzo-p-dioxins(PCDDs), dibenzofurans (PCDFs), naphthalenes (PCNs),and biphenyls (PCBs) were measured in eggs of double-crested cormorants and herring gulls collected from Michiganwaters of the Great Lakes. Concentrations of PCNs ineggs of double-crested cormorants and herring gulls werein the ranges of 380-2400 and 83-1300 pg/g, wet wt,respectively. Concentrations of 2,3,7,8-substituted PCDDsand PCDFs were 10-200 times less than those of PCNs ineggs whereas those of total PCBs (380-7900 ng/g, wetwt) were 3-4 orders of magnitude greater. While the profileof PCB isomers and congeners between double-crestedcormorants and herring gulls was similar, the PCN isomerprofile differed markedly between these two species.PCN congeners 66/67 (1,2,3,4,6,7/1,2,3,5,6,7) accounted forgreater than 90% of the total PCN concentrations inherring gulls, whereas their contribution to total PCNconcentrations in double-crested cormorants ranged from18 to 40% (mean, 31%). The ratios of concentrations ofPCDDs to PCDFs were greater in herring gulls than in double-crested cormorants collected from the same locations,suggesting the ability of the former to metabolize PCDFcongeners relatively rapidly. 2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) equivalents (TEQs) contributed by PCNsin double-crested cormorant and herring gull eggs were2-3% of the sum TEQs of PCBs, PCDDs, PCDFs, and PCNs.PCB congener 126 (3,3',4,4',5-PeCB) accounted for 57-72% of the total TEQs in double-crested cormorant andherring gull eggs.