Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China.
Mar Pollut Bull. 2012 Aug;64(8):1549-55. doi: 10.1016/j.marpolbul.2012.05.021. Epub 2012 Jun 12.
Forty-two surface sediment samples collected from the southern coastal East China Sea (ECS) were analyzed for organochlorine pesticides (OCPs). The results showed high concentrations of DDTs and parent DDT fractions in the nearshore area, suggesting that there is still a fresh input of these species from non-point sources, probably due to the recent usage of relevant products. However, for HCHs, the high concentrations with elevated β-HCH fraction were focused at the local major river estuaries, indicating that soils-released HCH input was mainly from the major river runoffs. The distribution and composition of OCPs in the coastal ECS could be more prominently controlled by the direct regional inputs rather than the general natural sorption process on particulate organic carbon. DDTs and chlordane are more important for their potential ecotoxicological risk on neighboring benthic community in the nearshore region and the local major river estuaries.
从中国东海（ECS）南部沿海采集了 42 个表层沉积物样本，用于分析有机氯农药（OCPs）。结果表明，近岸地区 DDTs 和母体 DDT 分数浓度较高，表明仍有非点源新鲜输入这些物质，可能是由于最近使用了相关产品。然而，对于 HCHs，高浓度且β-HCH 分数升高的情况主要集中在当地主要河流入海口，表明土壤释放的 HCH 输入主要来自于主要河流径流。ECS 沿海地区 OCPs 的分布和组成可能更多地受到直接区域输入的控制，而不是颗粒有机碳上的一般自然吸附过程。DDTs 和氯丹对近岸地区和当地主要河流入海口附近的底栖生物群落具有更大的潜在生态毒理学风险。
