Organochlorine Pesticides in Soils from a Typical Alluvial Plain of the Yangtze River Delta Region,China |
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Authors: | Wenyou Hu Biao Huang Yongcun Zhao Weixia Sun Zhiquan Gu |
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Institution: | (1) State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China;(2) Zhangjiagang County Extension Agency, Jiangsu Province, 215600, China; |
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Abstract: | Residues of organochlorine pesticides (OCPs), dichlorodiphenyltrichloroethane (DDT) and hexachlorocyclohexane (HCH), their
risks and affecting factors in 544 representative soils collected from a typical alluvial plain of the Yangtze River Delta
region, China, were investigated. Mean concentrations of ΣDDT and ΣHCH in soils were 88.8 and 99 ng/g, respectively. Historical
application of DDT and HCH were the major sources of their residues in soils. Concentrations of DDT in soils had relative
greater levels of contamination, while concentrations of HCH were almost at safe levels. Residues of DDT and HCH in soils
were affected by soil types as well as soil textures. |
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