农业环境与发展2016，Vol.33Issue(5)：449-458,10.DOI:10.13254/j.jare.2016.0149
天津地区土壤环境中有机氯农药残留特征
Residual Characters and Sources of Organochlorine Pesticides in Soils of Tianjin Area, China
王迎 1宋文筠 2王友诚 3张文具 1党秀芳 1王朝晖1
作者信息
- 1. 天津市环境监测中心，天津 300191
- 2. 天津市环境保护技术开发中心，天津 300191
- 3. 天津泰达投资控股有限公司，天津300457
- 折叠
摘要
Abstract
The spatial distribution characteristics and the sources of organochlorine pesticides(OCPs)were studied according to the field sampling and quantitative analysis of OCPs of soils in 188 points with 6 land-use types and 2 irrigation types from Tianjin area. This article investigated the residual levels , spatial and profile distribution of the isomers of hexachloro- cyclohexane soprocide(HCHs) and dichlorodiphenyl trichloroethane(DDTs)firstly, and then made the comparison with the residues in the past. The results showed that the con-tents of HCHs and DDTs in the soil of Tianjin reached to class A of the national standard. The distribution characteristics of HCHs in soils from Tianjin indicated that the inner suburban district and the coastal region were the most polluted areas, downtown took the second place, and outer suburban district was the least polluted. The distribution characteristics of DDTs showed that the inner suburban district and the downtown were the most polluted area, outer suburban district took the second place, and the coastal region was the least polluted. In different land-use types, there was the highest OCPs residues in urban green area. And there was no significant differences of OCPs residues between irrigation area and sewage irrigation area. The results of profile analysis indicated that the total amount of OCPs was mainly found in the 0~30 cm of farming layer. Based on the comparison of the residues of HCHs with that of DDTs, the degradation rate of DDTs was higher than that of HCHs, and abnormal residual levels were found in some areas of Tianjin.关键词
天津/表层土壤/有机氯农药Key words
Tianjin/surface soil/organochlorine pesticides分类
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王迎,宋文筠,王友诚,张文具,党秀芳,王朝晖..天津地区土壤环境中有机氯农药残留特征[J].农业环境与发展,2016,33(5):449-458,10.
