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Atmospheric depositional fluxes and sources apportionment of organochlorine pesticides in the Pearl River Delta region, South China
Qiang Huang;  Jianzhong Song;  Ying Zhong;  Ping’an Peng;  Weilin Huang
2014
发表期刊Environmental Monitoring and Assessment
卷号186期号:1页码:247-256
摘要

Organochlorine pesticides (OCPs) have variously been phased out in agricultural activities, but they are still widely detected in air, water, and soil systems due to their recalcitrant nature in the environment. The purposes of this study were to assess potential OCP pollution via dry and wet deposition over the fast developing Pearl River Delta area with 41,700 km2, where the main effort has been focused on emerging pollutants such as petroleum hydrocarbons and PM2.5. We quantified both the dry and wet deposition fluxes of 19 OCPs including dichlorodiphenyltrichloroethanes (DDTs), endosulfans (Endos), and hexachlorocyclohexanes (HCHs). The results showed that each year about 67.4, 42.0, 15.0, and 8.07 kg of total OCPs, DDTs, Endos, and HCHs were returned to the ground, among which 11.7, 10.4, 0.84, and 0.16 kg were in the dry deposition forms. The large spatial variations in OCP deposition fluxes indicated that OCP pollution in the air is mainly influenced on local scales because evaporation from local soil is likely the major source of the phased out OCPs. Source analysis indicated that DDTs may be still in use as antifouling agent and/or dicofol, but Endos and HCHs were mainly derived from the residual of historical usage. The study suggests that the historical OCP pollutants are persistent at high levels in this area and should not be overlooked, while we tackle emerging pollutants.

关键词Deposition Flux pearl River Delta ddt endosulfan hch
收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.gyig.ac.cn/handle/42920512-1/9345
专题环境地球化学国家重点实验室
作者单位1.State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
2.Department of Environmental Sciences, Rutgers, The State University of New Jersey, New Brunswick, NJ 08901, USA
3.Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China
推荐引用方式
GB/T 7714
Qiang Huang;Jianzhong Song;Ying Zhong;Ping’an Peng;Weilin Huang. Atmospheric depositional fluxes and sources apportionment of organochlorine pesticides in the Pearl River Delta region, South China[J]. Environmental Monitoring and Assessment,2014,186(1):247-256.
APA Qiang Huang;Jianzhong Song;Ying Zhong;Ping’an Peng;Weilin Huang.(2014).Atmospheric depositional fluxes and sources apportionment of organochlorine pesticides in the Pearl River Delta region, South China.Environmental Monitoring and Assessment,186(1),247-256.
MLA Qiang Huang;Jianzhong Song;Ying Zhong;Ping’an Peng;Weilin Huang."Atmospheric depositional fluxes and sources apportionment of organochlorine pesticides in the Pearl River Delta region, South China".Environmental Monitoring and Assessment 186.1(2014):247-256.
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