Dissipation behavior and risk assessment of butralin in soybean and soil under field conditions

文献类型: 外文期刊

第一作者: Li, Congdi

作者: Li, Congdi;Li, Li;Li, Wei;Yuan, Longfei;Li, Congdi;He, Yujian;Liu, Rong

作者机构:

关键词: Butralin;Dissipation;Residue;Risk assessment;Soybean

期刊名称:ENVIRONMENTAL MONITORING AND ASSESSMENT ( 影响因子:2.513; 五年影响因子:2.871 )

ISSN:

年卷期:

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收录情况: SCI

摘要: Dissipation behavior, final residue, and risk assessment of butralin in soybean, green soybean, plant, and soil were investigated. Butralin residues were extracted with acetonitrile and then soybean samples were detected with gas chromatography-mass spectrometer (GC-MS) and soil samples were determined with GC with nitrogen phosphorous detector (GC-NPD). The limit of quantification (LOQ) of the method was 0.01 mg/kg for soybean, green soybean, plant, and soil. Average recoveries ranged from 90.4 +/- 98.2% for green soybean, 86.2 +/- 86.6% for soybean, 86.0 +/- 98.8% for plant, and 85.0 +/- 106.8% for soil. The relative standard deviations (RSDs) were 2.0 +/- 7.2% for green soybean, 2.0 +/- 3.0% for soybean, 3.1 +/- 8.1% for plant, and 1.8 +/- 6.6% for soil. Half-lives of butralin in soil samples varied in the range of 11-22 days. At harvest time, final residues of butralin in soybean and green soybean were lower than LOQ. Risk assessment demonstrated that, at recommended dosage and frequency, butralin would not induce significant harm on humans. The study could be used as a quantitative basis for application of butralin on soybean.

分类号: X8

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