Determination of HCH and DDT in soils following Wenchuan 5.12 Violent Earthquake in China |
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| Authors: | Weiwei Cui Qiangbin Zhang Xianlei Zhu Yunyang Wan Zhihuan Zhang Zhihua Fan Tieguan Wang |
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| Institution: | (1) Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, People’s Republic of China;(2) State Key Laboratory of Organic Chemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, People’s Republic of China;(3) College of Life Sciences, Hebei University, Baoding, 071002, People’s Republic of China; |
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| Abstract: | A large number of disinfectants and insecticides were used on a large scale after the Wenchuan 5.12 Violent Earthquake. The
disinfectants and insecticides, including HCH (hexachlorocyclohexane) and DDT (dichlorodiphenyltrichoroethane) as representative
OCPs, could lead to serious environmental problems. In order to disclose the residues of HCH and DDT in soils following the
Wenchuan 5.12 Violent Earthquake, surface soils in Dujiangyan City and Beichuan County were sampled in 2009. The samples were
analyzed by GC/MS after pre-treatment by ultrasonic solvent extraction. It has been found that the concentrations of γ-HCH,
β-HCH and 4,4′-DDT in soils of Beichuan County were 94–102.4, 14.1–36.1 and 2.9–4.3 times high their concentrations in those
of the Wolong Nature Reserve, and the concentrations in soils of Dujiangyan City were 52.4–61.6, 8.8–45.3 and 5.4–6.2 times
high their concentrations in soils of the Wolong Nature Reserve, respectively. According to the isomers of HCHs and metabolites
of DDTs, it could be concluded that these areas may have additional inputs of lindane and 4,4′-DDT. |
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| Keywords: | Wenchuan 5 12 Violent Earthquake HCH DDT soil pollution |
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