Organochlorine pesticides in sediments of Laizhou Bay and its adjacent rivers, North China

MARINE POLLUTION BULLETIN

卷:62

Article

Zhong, Guangcai^1,3  Tang, Jianhui¹  Zhao, Zhen¹  Pan, Xiaohui¹  Chen, Yingjun¹  Li, Jun²  Zhang, Gan² 

[1] Chinese Acad Sci, Key Lab Coastal Zone Environm Proc, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China

[2] Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Guangdong, Peoples R China

[3] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

关键词: Bohai Sea;    Laizhou Bay;    Organochlorine pesticides;    DDTs;    Sediments;   

DOI  :  10.1016/j.marpolbul.2011.08.018

来源: Elsevier

【 摘 要 】

Organochlorine pesticides (HCHs, DDTs and HCB) have been investigated in sediments of Laizhou Bay and its adjacent rivers. The average concentrations of HCHs, DDTs and HCBs are 0.09 ng/g dw, 0.59 and 0.05 for marine sediments and 0.55, 8.6 and 1.1 for riverine sediments, respectively. Laizhou Bay is less contaminated by HCHs and DDTs in comparison with other coastal regions around the world, including the other two biggest bays in Bohai Sea. Fresh input of lindane and dicofol-type DDT were found in several riverine sites. Relatively strong TOC-dependence of HCB distribution in the entire studied area suggested no point source existed and/or water sediment equilibrium achieved. No significant difference of alpha/gamma-HCH ratios have been observed between marine and riverine sediments. However, o,p'-DDT/p,p'-DDT ratios varied largely between the two regions. (C) 2011 Elsevier Ltd. All rights reserved.

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