Residues and Sources of DDT and HCH in Agricultural Soils in the Suburb of Beijing, China

Abstract:

Abstract. Twenty-five topsoil samples (0-20cm) were collected to determine the dichlorodiphenyltrichloroethane (DDT) and its metabolites, isomers of hexachlorocyclohexane (HCH) residues from the agricultural soil in the Miyun County. The average measured concentrations of HCH and DDT were 1.07±0.84 and 6.54±7.88 ng·g-1, separately (dry weight; n=25; shown as arithmetic mean and standard deviation), which were lower than most of the results reported in literatures. Both of the detectable rates of HCH and DDT were 100％ and the residual levels was lower than most of other Chinese region．According to the values of isomers ratios, it show that HCH mainly from residues, therefore there were still new sources of DDT which entered into the soil of the studied area.

• Periodical: Advanced Materials Research (Volumes 850-851)
• Pages: 1320-1325
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.850-851.1320
• Online since: December 2013
• Authors: Xin Rong Li*, Tong Ke Zhao, Shun Jiang Li, Cheng Jun Zhang
• Keywords: DDT, HCH, Organochlorine Pesticides (OCPs), Soil

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