Clothianidin dissipation in tomato and soil, and distribution in tomato peel and flesh

文献类型: 外文期刊

第一作者: Li, Li

作者: Li, Li;Jiang, Gaiqing;Liang, Hongwu;Sun, Dali;Li, Wei;Liu, Congyun;Liang, Hongwu

作者机构:

关键词: Clothianidin;Tomato;Soil;Dissipation;Distribution

期刊名称:FOOD CONTROL ( 影响因子:5.548; 五年影响因子:5.498 )

ISSN: 0956-7135

年卷期: 2012 年 25 卷 1 期

页码:

收录情况: SCI

摘要: Clothianidin, a new neonicotinoid insecticide, was systematically evaluated. An analytical method using gas chromatography with electron capture detection was developed. Recoveries were between 92% and 102%, with relative standard deviations from 3% to 5% at three fortified levels. The decrease of clothianidin in tomato and soil samples under field conditions at Beijing, Shandong, and Anhui were determined. The dissipation rates of clothianidin fit first-order kinetics. Its half-lives ranged from 6.7 to 12.7 days in soil, and 7.0 to 11.9 days in tomato. On the suggested pre-harvest interval of 7 days, the distribution of clothianidin in tomato peel and flesh was studied. Most residues were found on the peel. Hence, removing the tomato peel before consumption is advisable. The stability of clothianidin fortified at 0.3 or 3 mg/kg in frozen green and red ripe tomatoes was also determined. The half-life mainly depended on the spiked levels of this pesticide. (C) 2011 Elsevier Ltd. All rights reserved.

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