蔬菜中农药残留检测前处理方法对比研究
2016-12-20张冷思裔群英丁立彤徐春奎
张冷思++裔群英++丁立彤++徐春奎++李艳++陈梦静

摘要 使用黄瓜作为基质,对比QuEChERs方法和NY761-2008方法,通过对基质样品进行加标,考察不同前处理方法对蔬菜中农药残留的回收率的影响,考察结合气相色谱仪,通过改变加标浓度,比较2种前处理法在不同的加标浓度下回收率。结果表明:QuEChERs方法和NY761-2008方法在黄瓜为基质的条件下,加标参数在2种浓度的回收率都达到80%以上,2种方法都可满足实际检测中的需求,且QuEChERs方法更加环保、简单、快速。
关键词 蔬菜;农药残留;检测;前处理;方法对比
中图分类号 S63;S481.8 文献标识码 A 文章编号 1007-5739(2016)20-0092-02
Compare Study of Pre-treatment Method in Pesticide Residues Detection in Vegetables
ZHANG Leng-si YI Qun-ying DING Li-tong XU Chun-kui LI Yan CHEN Meng-jing
(Agricultural Quality Supervision and Testing Center of Yancheng City in Jiangsu Province,Yancheng Jiangsu 224002)
Abstract Taking cucumber as a substrate,QuEChERs method and NY761-2008 method were compared.Adding a certain concentration of the pesticide in to thereof to study the effection of different pre-treatment methods for the detection of pesticide residues in vegetables.Combined with gas chromatography the investigation test changed the concentration of pesticide added to compare recovery of different pre-treatment.The results showed that QuEChERs and NY761-2008 methods under the conditions of cucumber as a substrate,both method have more than 80% recovery rate,it means two methods both can meet the needs of actual testing,and QuEChERs can be more environmentally,friendly,simple and fast.
Key words vegetables;pesticides residues;detection Pre-treatment;method comparison
随着人们对健康、对生活质量的要求日益提高,人们对食品的质量安全越来越重视,国家也对食品安全监测力度在不断加大。在力求方便快速地检测蔬菜中农药的残留量的同时也对检测结果的准确性有着更高的要求,这对不仅仅促进农产品检测人员水平的提高,也对农药残留检测技术的不断改进和发展增加了动力[1]。食品中农药残留分析检测是保证食品安全的重要手段,同时,这也是药物分析领域的一个重要研究课题。由于农药品种广,用途千差万别,针对单一类型农药的分析方法已很难适应目前我国食品安全的检测分析要求。因此,一种前处理简便、快速且准确的适用于蔬菜或水果中农药多残留分析方法显得非常重要[2]。
uEchERS(Quick,Easy,Cheap,Effective,Rugged and Safe)方法2003年在美国诞生,这是一种以快速、简便、环境友好、减少试剂消耗为目标的分析方法,它出现的意义就是尽可能地用更少的时间更节约的试剂来实现高质量分析。……
