HCH and DDT Residues in Bivalves Anodonta woodiana from the Taihu Lake, China

文献类型： 外文期刊

第一作者： Bian, Xuesen

作者： Bian, Xuesen;Liu, Hongbo;Yang, Jian;Bian, Xuesen;Gan, Juli;Li, Rong

作者机构：

期刊名称：ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY （ 影响因子：2.804； 五年影响因子：3.399 ）

ISSN： 0090-4341

年卷期： 2009 年 56 卷 1 期

页码：

收录情况： SCI

摘要： The present article attempts to use freshwater bivalves Anodonta woodiana for monitoring the pollution of hexachlorocyclohexane isomers (alpha-, beta-, gamma-, delta-HCH), dichlorodiphenyltrichloroethanes (o, p', p, p'-DDT) and metabolites (p, p'-DDE, p, p'-DDD) in the Taihu Lake, China. A total of 36 bivalves were sampled from 4 sites of Huzhou city, Dapu of Yixing city, Xueyan of Changzhou city, and Wulihu of Wuxi city around the lake in August-October 2004. The organochlorines were detected in all bivalves, and the mean concentration of I DDTs pound (7.07 ng/g wet weight) was significantly higher than that of I HCHs pound (2.37 ng/g wet weight). Overall, I HCHs pound are at the highest concentrations in the bivalves from the Dapu and Huzhou site, whereas I DDTs pound are at highest concentrations in the bivalves from the Wulihu site. Compositions of I HCHs pound were predominated by alpha- and gamma-HCH isomers in the bivalves from all four study sites. Among these sampling sites, p, p'-DDT exhibited the highest percentage in the bivalves from Huzhou site. Furthermore, significant regional variations in compositions of both I DDTs pound and I HCHs pound had been identified. The residue levels of I DDTs pound and I HCHs pound in the bivalves of the present study were much lower than the corresponding residue limits for aquatic products of Ministry of Agriculture of China, FDA, and FAO/WHO. These findings suggest that Anodonta woodiana could serve as a unique bioindicator to monitor the HCH and DDT pollutions in the freshwater environment.

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