| Sources of polychlorinated dibenzo-p-dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs), and coplanar polychlorinated biphenyls (Co-PCBs), and their bioaccumulation through the marine food web in Sendai Bay, Japan. | |
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MedLine Citation:
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PMID: 12948237 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The concentrations of PCDD/F and Co-PCB congeners in seawater, sediment, Pacific oyster, Japanese anchovy, marbled sole, and Japanese flounder samples from Sendai Bay, Japan, were analyzed. The compositions of total PCDD/F and total Co-PCB concentrations in sediment and Pacific oyster reflected that in seawater--the compositions of total PCDD, PCDF, and Co-PCB concentrations were approximately 60, 10, and 30%, respectively. The compositions in Japanese anchovy, marbled sole, and Japanese flounder were different from those in seawater and sediment-the ratio of total Co-PCB concentration to total PCDD/F plus Co-PCB concentrations in Japanese anchovy, marbled sole, and Japanese flounder was above 90%. Tetrachlorinated PCDDs (T4CDDs), such as 1,3,6,8- and 1,3,7,9-T4CDD, were the predominant congeners in seawater and sediment; the total T4CDD concentrations in seawater and sediment were approximately 46 and 48% of the total PCDD concentration. Furthermore, shipments of the herbicide 1,3,5-trichloro-2-(4-nitrophenoxy)benzene to Miyagi Prefecture, the so-called granary of Japan, were the highest in Japan over the last 12 years. The major sources of PCDD/Fs and Co-PCBs in Sendai Bay, which is in Miyagi Prefecture, are impurities in chlorinated herbicides. The order of concentration of PCDD/Fs was Pacific oyster > Japanese anchovy = marbled sole > Japanese flounder; the concentration in Japanese flounder, which is a higher-trophic-level consumer in the marine food web, was lower than that in shellfish (Pacific oyster) and Japanese anchovy, which are lower-trophic-level consumers. The order of concentration of Co-PCBs was Pacific oyster < Japanese anchovy = marbled sole < Japanese flounder; the concentrations in the higher-trophic-level consumers were higher than the concentrations in the lower-trophic-level consumers. Different PCDD/F congeners tended to bioaccumulate in different organisms. On the other hand, all species of Co-PCB congener tended to bioaccumulate in all organisms. |
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Authors:
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Yutaka Okumura; Yoh Yamashita; Satoshi Isagawa |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Journal of environmental monitoring : JEM Volume: 5 ISSN: 1464-0325 ISO Abbreviation: J Environ Monit Publication Date: 2003 Aug |
Date Detail:
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Created Date: 2003-09-01 Completed Date: 2003-12-12 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 100968688 Medline TA: J Environ Monit Country: England |
Other Details:
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Languages: eng Pagination: 610-8 Citation Subset: IM |
Affiliation:
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Tohoku National Fisheries Research Institute, Fisheries Research Agency, 3-27-5 Shinhama, Shiogama, Miyagi 985-0001, Japan. okumura@affrc.go.jp |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Benzofurans / analysis*, pharmacokinetics* Environmental Pollutants / analysis*, pharmacokinetics* Fishes Food Chain* Geologic Sediments / chemistry Japan Ostreidae / chemistry Polychlorinated Biphenyls / analysis*, pharmacokinetics* Soil Pollutants / analysis*, pharmacokinetics* Tetrachlorodibenzodioxin / analogs & derivatives*, analysis*, pharmacokinetics* Tissue Distribution Water Pollutants, Chemical / analysis*, pharmacokinetics* |
| Chemical | |
Reg. No./Substance:
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0/Benzofurans; 0/Environmental Pollutants; 0/Polychlorinated Biphenyls; 0/Soil Pollutants; 0/Water Pollutants, Chemical; 0/chlorinated dibenzofurans; 0/polychlorodibenzo-4-dioxin; 1746-01-6/Tetrachlorodibenzodioxin |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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