气相色谱-负化学离子化-质谱法同时分析果蔬中9种有机磷农药残留

食品科学 ›› 2012, Vol. 33 ›› Issue (18): 198-201.

气相色谱-负化学离子化-质谱法同时分析果蔬中9种有机磷农药残留

范玉兰1，王星梅1，薛珺1，李勋1,*，林竹光2

1.赣南师范学院化学化工学院 2.厦门大学化学化工学院

收稿日期:2011-07-31 修回日期:2012-07-12 出版日期:2012-09-25 发布日期:2012-09-07
通讯作者: 范玉兰 E-mail:fanyl@gnnu.cn
基金资助:
MSPD-GC-MS测定脐橙中多种农药残留分析方法研究;脐橙中有机磷农药残留的分析方法研究

Multiresidue Determination of Organophosphorus Pesticides in Fruits and Vegetables by Gas Chromatography-Negative Chemical Ionization-Mass Spectrometry

Received:2011-07-31 Revised:2012-07-12 Online:2012-09-25 Published:2012-09-07

摘要/Abstract

摘要： 建立同时分析果蔬中多种有机磷农药残留。果蔬样品经乙酸乙酯提取剂提取与Florisil硅藻土层析柱净化后，以乙硫磷为内标物，采用气相色谱-负化学离子化-质谱法同时的选择离子监测方式对多种有机磷农药残留进行定性与定量分析。结果表明：此方法快速、简便、灵敏度高和选择性好；9种有机磷农药残留的检测限为0.12～1.21μg/kg，平均回收率为76.5%～112%，相对标准偏差为1.45%～11.0%。

关键词: 气相色谱-负化学离子化-质谱法, 有机磷农药, 农药残留, 水果, 蔬菜

Abstract: A gas chromatography-negative chemical ionization-mass spectrometry (GC-NCI-MS) method was established to simultaneously determine 9 organophosphorus pesticide residues in fruits and vegetables. Samples were extracted with ethyl acetate and cleaned up on a Florisil column before GC-NCI-MS analysis in a selective ion-monitoring (SIM) mode. The internal standard used was ethion. The presented method was rapid, simple, sensitive and selective. The detection limits of this method for 9 organophosphorus pesticides were in the range of 0.12－1.21 μg/kg. The average recovery rates of 9 organophosphorus pesticides varied from 76.5% to 112% with a relative standard deviation of 1.45%－11.0%.

Key words: gas chromatography-negative chemical ionization-mass spectrometry (GC-NCI-MS), organophosphorus pesticides, pesticide residues, fruits, vegetables

中图分类号:

TS207.3

范玉兰1，王星梅1，薛珺1，李勋1,*，林竹光2. 气相色谱-负化学离子化-质谱法同时分析果蔬中9种有机磷农药残留[J]. 食品科学, 2012, 33(18): 198-201.

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