Organochlorine pesticides and polychlorinated biphenyls in riverine runoff of the Pearl River Delta, China: Assessment of mass loading, input source and environmental fate

被引：137
作者：
Guan, Yu-Feng [1 ,2 ]
Wang, Ji-Zhong [1 ,2 ]
Ni, Hong-Gang [1 ,2 ]
Zeng, Eddy Y. [1 ]
机构：
[1] Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
来源：
ENVIRONMENTAL POLLUTION | 2009年 / 157卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Organochlorine pesticides; Polychlorinated biphenyls; Riverine runoff; Mass loading; Fate; Pearl River Delta; POLYCYCLIC AROMATIC-HYDROCARBONS; POLYBROMINATED DIPHENYL ETHERS; SOUTH CHINA; MOLECULAR MARKERS; SURFACE-WATER; SEDIMENTS; FLUXES; SEA; HEXACHLOROCYCLOHEXANE; EXCHANGE;
D O I：
10.1016/j.envpol.2008.08.011
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
A large-scale sampling program was conducted to simultaneously collect water samples at the eight major riverine runoff outlets of the Pearl River Delta (PRD), South China to assess the importance of riverine runoff in transporting anthropogenic pollutants from terrestrial sources to the coastal ocean. The concentrations of Sigma 21OCPS (sum of 21 OCP components) and Sigma(20)PCBs (sum of 20 PCB congeners) were 2.57-41.2 and 0.12-1.47 ng/L, respectively. Compositional distributions of DDTs suggested the possibility of new input sources in the study area, but contributions from dicofol seemed considerably low. The annual inputs of Sigma(21)OCPs and Sigma(20)PCBs were 3090 and 215 kg, with those of total HCHs and DDTs being 1110 and 1020 kg, respectively. A mass balance consideration indicated that riverine runoff is the major mode carrying OCPs from the PRD to the coastal ocean. and the majority of OCPs is further dissipated to open seas. (C) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码：618 / 624
页数：7
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