摘要
[目的]建立一种同时测定梨中7种菊酯类农药的GC-MS方法。[方法]采用GC-MS法,QuEChERS法前处理梨样品,用乙腈溶液提取,PSA净化,对梨中7种菊酯类农药进行了多残留分析。[结果]7种菊酯类农药在0.01~1.0mg/L线性范围内,均呈现良好的线性关系,相关系数R2>0.9952;在0.01、0.1、0.5mg/kg3个加标质量分数下,各农药的平均回收率均在73.4%~106.0%之间,相对标准偏差在2.9%~7.8%之间。[结论]所建立的方法可以提供准确的定性和定量分析,操作简单、快速、灵敏度高,符合农药多残留检测要求,且所测梨的农药残留符合国家标准。
[Aims] To establish a GC-MS method for simultaneous determination of seven pyrethroid pesticides in pear.[Methods] Seven pyrethroid pesticide residues in pear were extracted with acetonitrile, purificated with PSA, and analyzed by GC-MS with QuEChERS.[Results] All the seven pyrethroid pesticides showed good linear relationship in the range of 0.01-1.0 mg/L with correlation coefficient R^2 > 0.9952. The recovery rates at 0.01, 0.1 and 0.5 mg/kg were between 73.4 and 106.0%, and the relative standard deviation was between 2.9 and 7.8%.[Conelusions] The established method can provide accurate qualitative and quantitative analysis. It is simple, rapid and sensitive. It meets the requirements of multi-residue detection of pesticides, and the pesticide residues in pear in the tested meet the national standards.
作者
卢琦
李慧冬
丁蕊艳
郭长英
方丽萍
张文君
毛江胜
陈子雷
LU Qi;LI Hui-dong;DING Rui-yan;GUO Chang-ying;FANG Li-ping;ZHANG Wen-jun;MAO Jiang-sheng;CHEN Zi-lei(Institute of Agricultural Quality Standards and Testing Technology,Shandong Academy of Agricultural Sciences,Agricultural Quality and Safety Risk Assessment Laboratory of the Ministry of Agriculture and Rural Areas (Jinan),Shandong Key Laboratory of Food Quality and Safety Testing Technology,Jinan 250100,China)
出处
《农药》
CAS
CSCD
北大核心
2019年第5期356-358,363,共4页
Agrochemicals
基金
国家现代农业产业技术体系(CARS-28-23)
山东省农业科学院农业科技创新工程(CXGC2017A03)资助
