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Studies on Dissipations and Residues of Indoxacarb under Different Field and Environmental Conditions

文献类型： 外文期刊

作者： Li, Ying-Hong 1 ; Wang, Xiang-Yun 2 ; Hua, Wei 3 ; Zhang, Hu 2 ;

作者机构： 1.Zhejiang Inst Food & Drug Control, NMPA Key Lab Testing & Warning Pharmceut Microbio, Hangzhou 310052, Peoples R China

2.Zhejiang Acad Agr Sci, Inst Qual & Standard Agroprod, Zhejiang Prov Key Lab Food Safety, Agr Minist,Key Lab Pesticide Residue Detect, Hangzhou 310021, Peoples R China

3.Sipcam Crop Sci Wuxi Co Ltd, Wuxi, Jiangsu, Peoples R China

期刊名称：JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY （ 影响因子：2.193； 五年影响因子：2.4 ）

ISSN： 2090-8865

年卷期： 2020 年 2020 卷

页码：

收录情况： SCI

摘要： Indoxacarb is a broad-spectrum insecticide and widely used in agriculture. The dissipations and residues of indoxacarb were researched at three different field sites in Beijing, Hunan, and Zhejiang provinces in China. Analytical methods for determining the residue of indoxacarb in paddy water, paddy soil, rice straw, rice hull, and brown rice were described. Indoxacarb residues were extracted from samples, cleaned up by solid phase extraction, and determined by high-performance liquid chromatography coupled with tandem mass spectrometry in the selected ion monitoring mode. The recoveries in paddy water, paddy soil, rice straw, rice hull, and brown rice matrices at three spiking levels ranged from 79.7% to 98.3%, respectively. The field and environmental conditions would affect the dissipations and residues of indoxacarb. The time to dissipate 50% of indoxacarb in paddy water, paddy soil, and rice straw was less than 9 days. The terminal residues obtained from Beijing at preharvest interval of 14 and 21 days were higher than the maximum limit of European Union. Therefore, a dosage of 24 g a. i. ha(-1) at 28 days preharvest interval with 3 spraying times was recommended. Such accumulation of measured data is necessary to provide guidance for the proper and safe use of this pesticide.

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