摘要
为探明4种未登记农药(腐霉利、氯虫苯甲酰胺、甲维盐和多效唑)在黄桃上的安全性和消解特性,在施药后套袋和施药后不套袋2种处理方法下,开展了这4种农药在黄桃中的消解动态与膳食风险评估研究。建立了液相色谱-串联质谱联用(LC-MS/MS)分析方法同时测定黄桃中4种未登记农药残留量。结果表明,在0.05~5.0 mg·kg^(-1)(腐霉利、氯虫苯甲酰胺和多效唑)和0.001~0.05 mg·kg^(-1)(甲维盐)添加水平下,4种农药的平均回收率为75.6%~111.3%,相对标准偏差(RSD)为0.9%~5.2%。4种农药在黄桃中的降解均符合一级动力学方程。根据农药残留和风险评估结果,在推荐剂量下甲维盐和多效唑建议在黄桃上设置14 d的安全间隔期(PHI),氯虫苯甲酰胺建议设置3 d的PHI;腐霉利因降解比较缓慢,不建议在黄桃生产上使用。
To clarify food safety and dissipation dynamics of four unregistered pesticides(procymidone,chlorantraniliprole,emamectin benzoate and paclobutrazol)in yellow peach,the degradation dynamics and dietary risk assessment of these four pesticides in yellow peach were studied under two treatment methods of bagged and non-bagged.Based on liquid chromatography-tandem mass spectrometry(LC-MS/MS)technology,a simple and practical method was established to measure the residues of four unregistered pesticides in yellow peach.The mean recoveries of four pesticides in yellow peach were 75.6%-111.3%at spiking levels from 0.05 to 5.0 mg·kg^(-1)(procymidone,chlorantraniliprole and paclobutrazol)and 0.001 to 0.05 mg·kg^(-1)(emamectin benzoate)with relative standard deviation(RSD)of 0.9%-5.2%.The degradation of four pesticides in the yellow peach accorded with the first-order kinetic equation.Based on the results of pesticide residue and risk assessment,emamectin benzoate and paclobutrazol should be used on the yellow peach with a preharvest interval(PHI)of 14 days,and chlorantraniliprole should be used on the yellow peach with a PHI of 3 days at the recommended dose.Due to the slow degradation of procymidone,it is not recommended to use procymidone in yellow peach.
作者
刘玉红
金检生
陈丽萍
孙彩霞
LIU Yuhong;JIN Jiansheng;CHEN Liping;SUN Caixia(Institute of Agro-Product Safety and Nutrition,Zhejiang Academy of Agricultural Sciences,Hangzhou 310021,China;Agricultural Technology Promotion&Service Center of Wuxing District,Huzhou City,Huzhou 313000,Zhejiang,China;Agricultural Science and Technology Development Center of Huzhou,Huzhou 313000,Zhejiang,China)
出处
《浙江农业学报》
CSCD
北大核心
2024年第2期432-440,共9页
Acta Agriculturae Zhejiangensis
基金
农业标准化生产示范县创建(“一县一品一策”)重大专项(ZJNY2021001)。
关键词
黄桃
套袋
未登记农药
残留动态
风险评估
yellow peach
bagged
unregistered pesticide
residue dynamics
risk assessment
作者简介
刘玉红(1993—),女,安徽池州人,硕士,助理研究员,研究方向为农产品质量安全。E-mail:1608811490@qq.com;通信作者:孙彩霞,E-mail:suncaixia0571@126.com。
