Leaching behavior of chlorpyrifos and its main metabolite TCP through 5 types of soil columns in laboratory conditions
文献类型: 外文期刊
第一作者: Sun, Baoli
作者: Sun, Baoli;Shan, Hong;Dong, Yiwei;Huang, Jinli;Tong, Chengfeng
作者机构:
关键词: Leaching;soil column;TCP;chlorpyrifos
期刊名称:ENVIRONMENTAL TECHNOLOGY AND RESOURCE UTILIZATION II
ISSN: 1660-9336
年卷期: 2014 年 675-677 卷
页码:
收录情况: SCI
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 mu g.mL(-1) to 0.23 mu g.mL(-1); and (5) The K-oc 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.
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