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Sci Total Environ

Title:		"Organochlorine pesticides in seawater and the surrounding atmosphere of the marginal seas of China: spatial distribution, sources and air-water exchange"
Author(s):		Lin T; Li J; Xu Y; Liu X; Luo C; Cheng H; Chen Y; Zhang G;
Address:		"State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China"
Journal Title:		Sci Total Environ
Year:		2012
Volume:		20120731
Issue:
Page Number:		244 - 252
DOI:		10.1016/j.scitotenv.2012.07.028
ISSN/ISBN:		1879-1026 (Electronic) 0048-9697 (Linking)
Abstract:		"Shipboard air and surface seawater samples collected over the Yellow Sea, East China Sea and South China Sea were analyzed for organochlorine pesticides (OCPs). In air, gamma-hexachlorocyclohexane (HCH), trans-chlordane (TC) and cis-chlordane (CC) had significantly (p<0.001) higher concentrations than alpha-HCH, o,p'-Dichlorodiphenyltrichloroethane (DDT), p,p'-DDE, p,p'-DDT and alpha-endosulfan. Generally, alpha-HCH concentrations in the atmosphere were quite uniform over the Chinese marginal seas. However, the highest concentrations of gamma-HCH, TC, CC and DDT compounds were found in the southern parts of the marginal seas, and higher concentrations of alpha-endosulfan were observed in the northern part of the marginal seas. In water, the OCP concentrations varied over a narrow range, with hundreds picogram per liter levels. Air-water exchange gradients suggested net deposition or equilibrium for gamma-HCH and o,p'-DDT and net volatilization for alpha-HCH, CC, TC, p,p'-DDE and p,p'-DDT. Due to the potential source of those compounds from coastal water runoff, the ocean water played an important role of OCP sources for the atmosphere after a long period of OCP prohibition"
Keywords:		"Air Pollutants/analysis/*chemistry China Environmental Monitoring/methods Hydrocarbons, Chlorinated/*analysis Models, Chemical Oceans and Seas Pesticide Residues/*analysis Seawater/*analysis Water Pollutants/*analysis;"
Notes:		"MedlineLin, Tian Li, Jun Xu, Yue Liu, Xiang Luo, Chunling Cheng, Hairong Chen, Yingjun Zhang, Gan eng Research Support, Non-U.S. Gov't Netherlands 2012/08/04 Sci Total Environ. 2012 Oct 1; 435-436:244-52. doi: 10.1016/j.scitotenv.2012.07.028. Epub 2012 Jul 31"