CUI Weiwei1, ZHANG Qiangbin1,2*, ZHU Xianlei1, WAN Yunyang1, ZHANG Zhihuan1,2, FAN Zhihua3, and WANG Tieguan1,2
(1. College of Geosciences, China University of Petroleum; Beijing 102249, China;
2. State Key Laboratory of Petroleum Resource and Prospecting, China University of Petroleum; Beijing 102249, China;
3. Department of Environmental and Occupational Medicine, University of Medicine and Dentistry of NJ-Rutgers University, Piscataway, NJ 08854, USA)
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.
Key words Wenchuan 5.12 Violent Earthquake; HCH; DDT; soil pollution
* Corresponding author, E-mail:zhangq@cup.edu.cn
CHINESE JOURNAL OF GEOCHEMISTRY Vol. 30, No. 1, 2011, page 125-131
© Science Press and Institute of Geochemistry, CAS and Springer-Verlag Berlin Heidelberg 2011
