Polychlorinated biphenyls and organochlorine pesticides in surface sediments from Shantou Bay, China: Sources, seasonal variations and inventories.
Sediments from Shantou Bay, China, were analyzed for polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCPs) for the first time. The concentrations of PCBs and OCPs were 0.54-55.5ngg-1and 2.19-16.9ngg-1(dry weight), respectively. Source identification showed that tri-CBs and penta-CBs were manufactured and used in the last century, while usage of antifouling paint might still serve as a significant source of sediment DDT. Concentrations of PCBs and HCHs significantly (p<0.05) increased after wet season, suggesting that atmospheric deposition and surface runoff played an important role in distribution of historical pollutants. Additionally, the adverse biological effects could occasionally occur for DDT in sediments. The mass inventories were preliminarily calculated for PCBs (90.1ngcm-2and 0.09tons) and OCPs (61.8ngcm-2and 0.062tons) in Shantou Bay, while as part of the "reservoir" of organochlorine compounds to the global ocean, its role cannot be neglected.
Marine Biology Institute, Shantou University, Shantou, Guangdong 515063, China.
Jingchun
J
Shi
Marine Biology Institute, Shantou University, Shantou, Guangdong 515063, China.
Ping
P
Li
Marine Biology Institute, Shantou University, Shantou, Guangdong 515063, China.
Yuelin
Y
Li
Marine Biology Institute, Shantou University, Shantou, Guangdong 515063, China. Electronic address: whliu@stu.edu.cn.
Wenhua
W
Liu
State Key Laboratory of Environmental and Biological Analysis, Hong Kong Baptist University, 224 Waterloo Road, Kowloon Tong, Hong Kong, China.
Gene Jin-Shu
GJ
Zheng
State Key Laboratory of Environmental and Biological Analysis, Hong Kong Baptist University, 224 Waterloo Road, Kowloon Tong, Hong Kong, China.
Li
L
Xiang
Marine Biology Institute, Shantou University, Shantou, Guangdong 515063, China.
Zhongwen
Z
Huang
D061006:Bays; D002681:China; D004784:Environmental Monitoring; D019015:Geologic Sediments; D006843:Hydrocarbons, Chlorinated / Q000032:analysis*; D010575:Pesticides / Q000032:analysis*; D011078:Polychlorinated Biphenyls / Q000032:analysis*; D012621:Seasons; D014874:Water Pollutants, Chemical / Q000032:analysis*
D006843:Hydrocarbons, Chlorinated; D010575:Pesticides; D014874:Water Pollutants, Chemical; D011078:Polychlorinated Biphenyls
Estuary; Mass inventory; OCPs; PCBs; Shantou Harbor; Surface sediments