HISTORICAL CONTAMINATION AND SOURCES OF ORGANOCHLORINE PESTICIDES IN SEDIMENT CORES FROM XIAOHAI BAY, HAINAN PROVINCE,CHINA
Three sediment cores in Xiaohai Bay were collected for organochlorine pesticides analysis. The concentration of the surface sediments was lower than those from Xiamen and Quanzhou Bay, but was higher than those in Minjiang, Daya, and Pearl Delta. The concentration of sediment core located at the neck of Xiaohai Bay, near to the South Sea, is the highest in all three cores. This sediment core is located at the interchange place of freshwater and salt water; maybe the flocculation deposition is stronger than in other places, which is favor for the accumulation of organic pesticides in sediment. And the deposition condition is different for deep and surface sediment. DDTs at deep sediment were aged and mainly originated from weathered agricultural soils, and there were new DDT pesticide inputs at surface sediment. The study area is eutrophicated than in the past, which is polluted by agriculture and other human activity.
Xiaohai Bay Organochlorine Pesticides Historical Contamination and Sources
Xing X L Qi S H Yang D Zhang Y. Xu F.
Key Laboratory of Biogeology and Environmental Geology of Chinese Ministry of Education,China University of Geosciences,Wuhan,430074,P.R. China School of Environmental Studies,China University of Geosciences,Wuhan,430074,P.R. China
国际会议
北京
英文
1-6
2009-08-24（万方平台首次上网日期，不代表论文的发表时间）