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Leaching behavior of chlorpyrifos and its main metabolite TCP through 5 types of soil columns in laboratory conditions

文献类型: 会议论文

第一作者: Baoli Sun

作者: Baoli Sun 1 ; Hong Shan 1 ; Yiwei Dong 1 ; Jinli Huang 1 ; Chengfeng Tong 1 ;

作者机构: 1.Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences

关键词: Leaching;Soil column;TCP;Chlorpyrifos

会议名称: International Conference on Renewable Energy and Environmental Technology

主办单位:

页码: 170-175

摘要: By applying the OECD soil column method, the leaching behavior of chlorpyrifos and it main metabolite, 3,5,6-trichloro-2-pyridino(l TCP), in five types of saturated soil was compared. The results show the following: (1) Chlorpyrifos can be retained in the five types of saturated soil, and the rate of chlorpyrifos residues in the five types of soil columns are 86.9% (Black soil), 80.3% (Red soil), 77.9% (Limestone soil), 74.7% (fluvo-aquic soil) and 68.9% (Purple soil) of the application amount; (2) No chlorpyrifos was found in the leachate; (3) TCP could fully migrate in the five types of 30-cm-long soil columns and the TCP residues in these columns are 34.4% (Black soil), 29.6% (Red soil), 24.8% (Limestone soil),14.1% (fluvo-aquic soil) and 10.3% (Purple soil) of the application amount; (4) The average concentrations of TCP in the 400 mL leaching solution were from 0.31 μg·mL~(-1) to 0.23 μg·mL~(-1); and (5) The Koc and GUS values of the TCP in the five types of soil showed that TCP has a great leaching risk compared with its parent compound of chlorpyrifos.

分类号: X3-53

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