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当前位置: 首页 > 文章 > 虱螨脲在韭菜与土壤中的残留分析及膳食风险评估 农药 2018,57 (8) 578-581
Position: Home > Articles > Residual Analysis and Dietary Risk Assessment of Lufenuron in Leek and Soil Agrochemicals 2018,57 (8) 578-581

虱螨脲在韭菜与土壤中的残留分析及膳食风险评估

作  者：
郭鸿莹;侯新港;齐颖慧;王博;赵晓峰;王鑫宏;逯忠斌;侯志广
单  位：
吉林农业大学资源环境学院;吉林省农业技术推广总站
关键词：
虱螨脲;高效液相色谱串联质谱;韭菜;消解动态;农药风险评估
摘  要：
[目的]研究虱螨脲在韭菜和土壤中的残留和消解动态。[方法]样品中的虱螨脲用乙腈提取,采用QuEChERS法净化,通过高效液相色谱-串联质谱法测定虱螨脲的残留量。[结果]韭菜和土壤中虱螨脲的回收率为73.0%～89.5%,相对标准偏差为1.6%～10.4%。虱螨脲在韭菜和土壤中的半衰期分别为1.6 d和37.5～40.4 d,韭菜和土壤中的最终残留量分别为0.010～0.080 mg/kg和0.373～5.384 mg/kg,虱螨脲的风险商值为1.32×10-3,远低于1,为可接受风险。[结论]根据研究结果,建议我国虱螨脲在韭菜中的MRL值为0.1 mg/kg,且使用1%虱螨脲颗粒剂时的推荐施药剂量的高剂量22 500 g/hm2(225 g a.i./hm2),施药次数为1次,安全间隔期为7 d。
译  名：
Residual Analysis and Dietary Risk Assessment of Lufenuron in Leek and Soil
作  者：
GUO Hong-ying;HOU Xin-gang;QI Ying-hui;WANG Bo;ZHAO Xiao-feng;WANG Xin-hong;LU Zhong-bin;HOU Zhi-guang;College of Resource and Environmental Science, Jilin Agricultural University;Jilin Provincial Agro-tech Central Extension Station;
关键词：
lufenuron;;HPLC-MS/MS;;leek;;decline dynamics;;pesticide risk assessment
摘  要：
[Aims] The aims were to study the residue and degradation dynamics of the Lufenuron in the leek and soil.[Methods] The lufenuron in leek and soil samples were extracted with acetonitrile, purified by Qu ECh ERS method, and determined by HPLC-MS/MS. [Results] The recoveries of lufenuron in leek and soil were 70.3-89.5% with the relative standard deviations of 1.6-10.4%. The half-lives of lufenuron were 1.6 d in leek and 37.5-40.4 d in soil. The final residues of lufenuron were 0.010-0.080 mg/kg in leek and 0.373-5.384 mg/kg in soil. The risk quotient for lufenuron was 1.32 ×10-3, far less than 1, which was acceptable risk. [Conclusions] According to the research results, it is suggested that the value of MRL for lufenuron in leek should be 0.1 mg/kg in China, and the recommended dosage is22 500 g/ha(225 g a.i./ha) that according the higher dose of the prescribed dose when is used the lufenuron 1%granules, application frequency is the one time and the safety interval is 7 d.

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