Residues and sources of DDT and HCH in agricultural soils in the suburb of Beijing, China
文献类型: 外文期刊
作者: Li, Xinrong 1 ; Zhao, Tongke 1 ; Li, Shunjiang 1 ; Zhang, Chengjun 1 ;
作者机构: 1.Beijing Acad Agr & Forestry Sci, Inst Plant Nutr & Nat Resources, Beijing 100097, Peoples R China
关键词: Organochlorine Pesticides (OCPs);DDT;HCH;soil
期刊名称:ADVANCES IN APPLIED SCIENCES AND MANUFACTURING, PTS 1 AND 2
ISSN: 1022-6680
年卷期: 2014 年 850-851 卷
页码:
收录情况: SCI
摘要: 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.
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