Polychlorinated Naphthalenes and Polychlorinated Biphenyls in Fishes from Michigan Waters Including the Great Lakes
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- 作者：Kurunthachalam Kannan ; Nobuyoshi Yamashita ; Takashi Imagawa ; Wim Decoen ; Jong Seong Khim ; Robert M. Day ; Cheryl L. Summer ; and John P. Giesy
- 刊名：Environmental Science & Technology
- 出版年：2000
- 出版时间：February 15, 2000
- 年：2000
- 卷：34
- 期：4
- 页码：566 - 572
- 全文大小：137K
- 年卷期：v.34,no.4(February 15, 2000)
- ISSN：1520-5851
文摘
Polychlorinated naphthalene (PCN) and polychlorinatedbiphenyl (PCB) congeners were measured in whole bodyand fillet of fishes collected from Michigan waters, includingthe Great Lakes, during 1996-1997. PCNs were found inall the fishes analyzed including those from Siskiwit Lake,a remote lake located near the southern shoreline ofIsle Royale National Park in Lake Superior. Concentrationsof total PCNs in fishes ranged from 19 to 31 400 pg/g,wet wt, and varied depending on sampling location andspecies. Fishes from the Detroit River contained the greatestconcentrations of both PCNs and PCBs. Concentrationsof total PCNs in fishes from Michigan waters were significantlycorrelated with the concentrations of PCBs. As withtotal PCN concentrations, the profiles of PCN isomer/congener distribution in fishes varied among samplinglocations and species. Fishes from the Detroit River containedPCN profile similar to that of Halowax 1014, whereasthose from Siskiwit Lake and Lake Superior containedgreater proportions of congeners which have greatbioaccumulative potential. Estimated concentrations of 2,3,7,8-tetrachlorodibenzo-p-dioxin equivalents (TEQs) of PCNsranged from 0.007 to 11 pg/g, wet wt. PCN congeners 66/67 and 69 accounted for greater than 80% of the TEQscontributed by PCNs. TEQs contributed by PCBs, estimatedbased on H4IIE bioassay-derived TEFs, were in therange of 0.06-11 pg/g, wet wt, which were similar tothose contributed by PCNs. When international TEFs (I-TEFs) for coplanar PCBs were applied, estimated PCB-TEQs ranged from 0.46 to 79 pg/g, wet wt, which were 5-10times greater than those that were estimated from H4IIETEFs. PCB congener 126 contributed greater than 50% of theTEQs contributed by PCBs in all the fishes. Overall,when similarly derived TEFs were used, PCNs contributed2-57% of the sum of TEQs of PCNs and PCBs.