2017•PubMedRequires access
[Residues of Organochlorine Pesticides (OCPs) in Water and Sediments from Nansha Mangrove Wetland].
Yang Ding, Huanfang Huang, Hui Li, Jie Luo, Huang Zheng, Yan Sun, Dan Yang, Yuan Zhang, Shihua Qi
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Abstract
). Compared with other estuaries and harbors around the world, concentrations of OCPs in this study stayed at a median pollution level. The mean values of distribution coefficient of HCHs and DDTs between water and sediments were 857 and 368, respectively. Sediments in some parts of the area, whose distribution coefficient was relatively high, may bring water the secondary pollution. Source analysis indicated that HCHs mainly originated from the application of Lindane, and DDTs originated from mixed sources of dicofol and technical DDT. Compared with OCPs in water, OCPs in sediments might contain more historical residual components. OCPs in water had light ecological risk, but OCPs in sediments posed a potential high risk to mangrove ecosystem.