农药学学报2012，Vol.14Issue(6)：685-688,4.DOI:10.3969/j.issn.1008-7303.2012.06.18
黄瓜中醚菌酯的残留及风险评估
Residue and risk assessment of kresoxim-methyl in cucumber under field conditions
摘要
Abstract
A rapid and effective method was developed for determination of kresoxim-methyl residue in cucumber. Field trials were designed to evaluate the dissipation and residue of kresoxim-methyl in cucumber at Guangzhou and Tianjin. The dietary exposure and risk assessment were also conducted by using the calculation of risk quotient(RQ). The samples were extracted by acetonitrile and detected by HPLC-MS/MS. The results showed good average recoveries of 91% -95% with relative standard deviations of 3.74% -9.99% at the spiked level of 0.01,0.05 and 0.5 mg/kg. The limit of detection (LOD) was 0.001 mg/kg and the limit of quantification (LOQ) was 0. 01 mg/kg. The results were found that the half lives of kresoxim-methly in cucumber of Guangzhou and Tianjin were 1.5 and 2.1 days,respectively,and the terminal residue was 0.08 -0.23 mg/kg 3 days after application, and lower than LOQ value 5 days after application,the RQ of kresoxim-methyl were far below 1. It predicted that it was safe for human being when using this pesticide to control powdery mildew on cucumber.关键词
醚菌酯/黄瓜/残留/风险评估Key words
kresoxim-methyl/cucumber/residue/risk assessment分类
资源环境引用本文复制引用
刘聪云,王有成,万凯,黄健祥,王富华..黄瓜中醚菌酯的残留及风险评估[J].农药学学报,2012,14(6):685-688,4.基金项目
广东省农业科学院院长基金(201219). （201219）
