Dissipation of chlorpyrifos and residue analysis in rice, soil and water under paddy field conditions

文献类型： 外文期刊

第一作者： Zhang, Xiao

作者： Zhang, Xiao;Shen, Yan;Yu, Xiang-yang;Liu, Xian-jin;Zhang, Xiao

作者机构：

关键词： chlorpyrifos;dissipation;residues;rice plant;soil;water

期刊名称：ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY （ 影响因子：6.291； 五年影响因子：6.393 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： The analytical method for the residues of chlorpyrifos in rice plants, water and soil was developed and dissipation of chlorpyrifos under field conditions was studied. The limit of detection (LOD) of chlorpyrifos was 0.006 mg kg~(-1) and the limit of quantification (LOQ) was found to be 0.04 mg kg~(-1) in rice plant (water) and 0.02 mg kg"1 in the other substrates, respectively. The results showed that the initial residues of chlorpyrifos in Nanjing and Guangxi were 4.99 and 6.05 mg kg"1 (rice plant), 1.35 and 1.58 mg kg~(-1) (water) and 0.51 and 0.63 mg kg~(-1) (soil), respectively. The half-lives of chlorpyrifos in rice plant, water and soil from Nanjing were 4.28, 0.58 and 1.35 day, respectively, and the half-lives of those from Guangxi were 3.86, 0.52 and 1.21 day, respectively. The husked rice, rice hull and straw samples were found to contain chlorpyrifos well below the maximum residue limit (MRL) following the recommended dosage, the residues of chlorpyrifos in soil were undetectable under all application levels and frequencies after 28 day of applications.

分类号： X

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