Distribution and bioaccumulation of polychlorinated biphenyls and organochlorine pesticides residues in sediments and Manila clams (Ruditapes philippinarum) from along the Mid-Western coast of Korea |
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| Authors: | Jin Young Choi Dong Beom Yang Gi Hoon Hong Kyung Hoon Shin |
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| Institution: | 1. Korea Institute of Ocean Science & Technology, 787, Haeanro, Ansan 426-744, Republic of Korea;2. Department of Marine Sciences and Covergent Technology, Hanyang University, Ansan 426-791, Republic of Korea |
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| Abstract: | The distribution and bioaccumulation features of PCBs, DDTs, and HCHs were investigated in the sediments and Manila clams collected from along the Mid-Western coast of Korea. The measured concentrations of ΣPCBs, ΣDDTs and ΣHCHs were 1.08–3.5, 0.12–0.35 and 0.090–0.30 ng g−1 dw in sediment, and 33–390, 7.4–46 and 6.3–27 ng g−1 lipid in Manila clam, respectively. Their levels were found to be relatively lower than those of other contaminated areas and the consumption of Manila clam from these areas seems to be safe for human health according to calculated lifetime cancer risk and hazard indices. The ΣPCBs and ΣDDTs concentrations in sediments showed a significant relationship to those in clams. The significant correlation was observed between BSAF in clams and Kow for each PCB congeners and DDT metabolites. These findings support that the PCBs and DDTs levels, which are highly hydrophobic chemicals, in clam reflect the sediment pollution through bioaccumulation. |
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| Keywords: | Persistent organic pollutants (POPs) Manila clam (Ruditapes philippinarum) BSAF Risk assessment Human risk assessment |
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