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Volume 20 Issue 4
Aug 2009
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Article Contents
Yinghui Wang, Shihua Qi, Xinli Xing, Xiangyi Gong, Junhua Yang, Meihui Xu. Distribution and Ecological Risk Evaluation of Organochlorine Pesticides in Sediments from Xinghua Bay, China. Journal of Earth Science, 2009, 20(4): 763-770. doi: 10.1007/s12583-009-0060-x
Citation: Yinghui Wang, Shihua Qi, Xinli Xing, Xiangyi Gong, Junhua Yang, Meihui Xu. Distribution and Ecological Risk Evaluation of Organochlorine Pesticides in Sediments from Xinghua Bay, China. Journal of Earth Science, 2009, 20(4): 763-770. doi: 10.1007/s12583-009-0060-x

Distribution and Ecological Risk Evaluation of Organochlorine Pesticides in Sediments from Xinghua Bay, China

doi: 10.1007/s12583-009-0060-x
Funds:

Eco-geochemical Surveying Project of Fujian Province 

the Foundation of Key Laboratory of Biogeology and Environmental Geology of the Minstry of Education BGEG200612

the Youth Science Foundation of Guangxi, China 0728098

the National Natural Science Foundation of China 40473043

More Information
  • Corresponding author: Qi Shihua, shihuaqi@cug.edu.cn
  • Received Date: 18 Dec 2008
  • Accepted Date: 17 Mar 2009
  • The concentrations of organochlorine pesticides (OCPs) in sediments from Xinghua (兴化) Bay, Fujian (福建) Province, China, were determined. The OCP concentrations ranged from 2.48 to 313.88 ng/g, with a more serious contamination in the upper sediment. But the OCP concentration in the upper layer was less than that in the lower sediment at the exit of the bay due to the influence of the Coriolis force. At the joint of the internal and external bays, OCPs accumulated abundantly because of freshwater and seawater mingling. The isomer percentage combined with isomer ratios indicated that DDTs (dichlorodiphengltrichloroethanes) were mainly derived from long-term weather soils, while lindane was introduced recently to the bay. The rivers flowing into the bay contributed more to DDT and HCH (hexachlorocyclohexane) contamination, especially at low tide. Compared with the corresponding quality guidelines from Ingersoll, the sediments from Xinghua Bay were likely to pose biological impairment and should be taken into account.

     

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