固相萃取气相色谱法测定蔬菜、水果中的多种有机磷农药残留  

Solid Phase Extraction GC Analysis of Phosphate Pesticide Residue in Vegetables and Fruits

作　　者：郑小严[1] 陆万平[2] 黄红霞[1] 陈金泉[2] 张兰[2] 

机构地区：[1]福建省中心检验所,福建福州350002 [2]福州大学食品安全分析与检测教育部重点实验室,福建福州350002

出　　处：《分析测试技术与仪器》2009年第3期144-150,共7页Analysis and Testing Technology and Instruments

基　　金：福建省科技厅重点项目(2007I0020;2007Y0060;2008Y0015);福建省高校新世纪优秀人才支持计划(HX2006-101)

摘　　要：建立了固相萃取气相色谱（SPE-GC）法测定蔬菜、水果中11种有机磷农药残留量的方法.样品经乙腈提取、浓缩后经弗罗里圭（florisil）固相萃取小柱净化,采用气相色谱-火焰热离子检测器（GC-FTD）测定.对于农药的3个添加水平,平均回收率为52.8±4.8%-115.3±3.0%（n=5）,RSD≤12.6%,方法的最小检出限在0.0126-0.052 mg/kg之间.方法快速、灵敏、准确、成本低,能满足蔬菜水果中多农残快速检测的分析要求.A rapid and sensitive method has been developed for the determination of 11 phosphate pesticides in vegetables and fruits by solid phase extraction and gas chromatographic determination.The samples were extracted by acetonitrile,and then cleaned up by self-made florisil solid phase extraction columella.Finally,they were determined on a gas chromatograph with a nitrogen phosphorous detector.The recoveries of this method ranged from 52.8±4.8% to 115.3±3.0% while spiked pesticide residues at three levels and the relative standard deviation were lower than 12.6%.The detection limit of this method ranged from 0.0126～0.052 mg/kg.This method is rapid and sensitive,it is applicable to the fast analysis of pesticide multi-residues in vegetables and fruits.

关 键 词：固相萃取 气相色谱 蔬菜 水果 有机磷 

分 类 号：O657.3[理学—分析化学]