[Distribution of organochlorine pesticides in surface sediments from Huangpu River and its risk evaluation].
This paper reports 20 organochlorine pesticides (OCPs) in surface sediments of Huangpu River in Shanghai, China. Pesticides were analyzed by GC/ECD with dual column. The concentration range of sigmaOCPs in sediments was 2.65-19.54 ng/g. DDTs, BHCs, methoxychlor and dieldrin had higher concentration than others. The concentration range of DDTs and BHCs was 0.68-4.43 ng/g and 0.14-0.77 ng/g, respectively, which shows concentration of DDTs was higher than BHCs. OCPs content increasing from upper to downstream Huangpu River implicats that discharging of industrial effluents and inflow of Suzhou River offered lots of OCPs to middle-lower Huangpu River. Distribution of OCPs components indicate that OCPs in sediments may be derived from the aged and weathered agricultural soils. According to correlation analysis between OCPs and TOC of sediments, TOC content influences the distribution of OCPs in sediment strongly. Contamination level of OCPs in sediment of Huangpu River is relatively lower than other areas. Comparing with ERL and ERM value of risk evaluation, sediments in middle-lower Huangpu River pose a bit high risk to consumers of bottom feeders.
Hu
Xiong-xing
XX
School of Environmental Science and Technology, Shanghai Jiaotong University, Shanghai 200240, China.
Han
Zhong-hao
ZH
Zhou
Ya-kang
YK
Cheng
Jin-ping
JP
Wang
Wen-hua
WH
D002681:China; D005618:Fresh Water / Q000032:analysis*; D006843:Hydrocarbons, Chlorinated / Q000032:analysis*; D010573:Pesticide Residues / Q000032:analysis*; D018570:Risk Assessment; D045483:Rivers; D014874:Water Pollutants, Chemical / Q000032:analysis*
D006843:Hydrocarbons, Chlorinated; D010573:Pesticide Residues; D014874:Water Pollutants, Chemical