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Position: Home > Articles > Residue Dissipation and Dietary Risk Assessment of Cyromazine in Celtuce and Cos lettuce Modern Agrochemicals 2020 (3) 30-34+38

灭蝇胺在莴笋和油麦菜中残留消解及膳食风险评估

作者：

冯义志;潘金菊;李瑞娟;王晓玉;齐晓雪;刘同金;于建垒;梁林;左伯军

单位：

关键词：

灭蝇胺;莴笋;油麦菜;消解;风险评估

摘要：

本文建立了以QuEChERS为前处理,利用液质联用质谱检测莴笋和油麦菜中灭蝇胺残留的分析方法。在0.05～20 mg/kg添加水平下,灭蝇胺在莴笋和油麦菜中的平均回收率为90%～104%,相对标准偏差为1%～11%。应用该方法对莴笋和油麦菜中灭蝇胺的残留量进行了研究,试验结果表明,灭蝇胺在山东和浙江两地莴笋和油麦菜中半衰期为分别为6.9～7.7 d和6.1～9.6 d。按照有效成分168.75 g/hm2和253.125 g/hm2的用量,喷雾施药2～3次,施药间隔7 d,距末次施药后间隔3 d采样,测得莴笋叶、莴笋茎和油麦菜中灭蝇胺的残留中值分别为3.92、0.187、4.67 mg/kg。以此为基础对灭蝇胺进行长期膳食摄入风险评估。结果表明,灭蝇胺在所有登记作物中的总膳食摄入风险商为0.162,膳食风险在可接受范围。

译名：

Residue Dissipation and Dietary Risk Assessment of Cyromazine in Celtuce and Cos lettuce

作者：

FENG Yizhi;PAN Jinju;LI Ruijuan;WANG Xiaoyu;QI Xiaoxue;LIU Tongjin;YU Jianlei;LIANG Lin;ZUO Bojun;Key Laboratory for Chemical Pesticide of Shandong Province, Shandong Academy of Pesticide Sciences;Institute of Plant Protection, Shandong Academy of Agricultural Sciences;

关键词：

cyromazine;;celtuce;;cos lettuce;;dissipation;;dietary risk assessment

摘要：

An analytical method for the determination of cyromazine residues in celtuce and cos lettuce was established using high-performance liquid chromatography-tandem mass spectrometry(LC-MS/MS) after QuEChERS extraction. The recovery rates of cyromazine in celtuce and cos lettuce ranged from 90% to 104%. The relative standard deviations(RSDs)ranged from 1% to 11%. The method was applied to determine the residues of cyromazine in celtuce and cos lettuce. The half-lives of cyromazine in celtuce and cos lettuce were 6.9-7.7 d and 6.1-9.6 d. The ultimate residues of cyromazine in celtuce and cos lettuce were determined after the application at effective olosage of 168.75 g/hm2 and 253.125 g/hm2 for 2-3 times usage with application frequency of 7 d, in celtuce and cos lettuce 3 d after treatment. The median residue levels were3.92 mg/kg, 0.187 mg/kg, 4.67 mg/kg, in celtuce, celtuce stem and cos lettuce, respectively. The total risk quotient(RQ)values for cyromazine in all registered crops were 0.162, which were lower than RQ=1. Based on this analysis, dietary risk of cyromazine is within acceptable levels.

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灭蝇胺在莴笋和油麦菜中残留消解及膳食风险评估

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