果蔬产品中多组分有机磷农药残留测定新方法研究与应用  

Research and application of QuEChERS gas chromatography for the determination of multi-component organophosphorus coating drug residues in fruit and vegetable products

作　　者：张艳丽 刘宏伟 刘小丽 王丽娟 张斌 宋保军 Xiaoli;Wang Lijuan;Zhang Bin;Song Baojun(Hebi Product Quality Inspection and Testing Centre,Hebi 458000,He'nan,China)

机构地区：[1]鹤壁市产品质量检验检测中心,鹤壁458000

出　　处：《分析仪器》2024年第3期51-55,共5页Analytical Instrumentation

基　　金：河南省市场监管局科技项目2023sj25。

摘　　要：建立了QuEChERS-气相色谱仪测定蔬菜水果中20种有机磷农药残留的检测方法。净化包用阳离子交换树脂,代替PSA、GCB,在色谱柱前面加2米保护柱,20种有机磷农药残留的线性范围均为10~400g·L-1,线性相关系数(r2)均大于0.998,方法的检出限为0.01mg·kg-1。在3个不同添加水平下的加标回收率为70.0%~120%,RSD为1.2%~10%。该法操作简单、成本较低,可对蔬菜水果中多农药残留进行快速筛查。成本由一个样品50元降为5元。The purification package uses cation exchange resin instead of PSA and GCB,and a 2-meter protective column is added in front of the chromatographic column.The linear range of 20 organic phosphorus pesticide residues is 10-400g·L-1,and the linear correlation coefficient(r2)is greater than 0.998.The detection limit of the method is 0.01mg·kg-1.The recovery rates of spiking at three different levels of addition are 70.0%to 120%,and the RSD is 1.2%to 10%.This method is simple to operate and cost-effective.

关 键 词：气相色谱仪 QUECHERS 阳离子交换树脂 蔬菜水果 农药残留 

分 类 号：TS255.7[轻工技术与工程—农产品加工及贮藏工程]