Determination of Organophosphorus Pesticides Residues in Vegetables by Rapid GC-MS Coupled with Direct Single-drop Microextraction

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Determination of Organophosphorus Pesticides Residues in Vegetables by Rapid GC-MS Coupled with Direct Single-drop Microextraction

- Determination of Organophosphorus Pesticides Residues in Vegetables by Rapid GC-MS Coupled with Direct Single-drop Microextraction
- Vol. 35, Issue 5, Pages: 569-573(2016)
- 作者机构：
  
  南昌市疾病预防控制中心
- 作者简介：
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Determination of Organophosphorus Pesticides Residues in Vegetables by Rapid GC-MS Coupled with Direct Single-drop Microextraction. [J]. 35(5):569-573(2016)
DOI：

Determination of Organophosphorus Pesticides Residues in Vegetables by Rapid GC-MS Coupled with Direct Single-drop Microextraction. [J]. 35(5):569-573(2016) DOI：

摘要

建立了液下单液滴微萃取/快速气相色谱-质谱联用测定蔬菜中多种有机磷农药残留的方法，并对前处理条件进行了优化。采用液下单液滴微萃取技术对样品进行萃取和浓缩，以快速气相色谱-质谱(GC-MS)分离检测，内标法定量。在优化条件下，治螟磷、甲拌磷、异稻瘟净、甲基对硫磷、皮蝇磷、马拉硫磷、毒死蜱、水胺硫磷和喹硫磷9种有机磷农药的色谱峰分离良好，相关系数均不低于0.995 8，检出限为0.32~0.91 μg/kg，加标回收率为83.2%~134.5%，相对标准偏差(n=5)为3.4%~16.5%。该方法样品前处理简单，分析快速，灵敏度高，能够应用于蔬菜中这9种有机磷农药残留的检测。

Abstract

A rapid method was developed for the determination of organophosphorus pesticides residues in vegetables using GC-MS coupled with direct single drop microextraction(SDME).The samples were extracted and enriched by direct SDME,then the target compounds were analyzed by GC-MS under selected ion monitering(SIM) mode,and quantified by the internal standard.Under the optimized conditions,9 kinds of organophosphorus pesticides,including sulfotep,phorate,iprobenfos,methyl parathion,ronnel,malathion,chlorpyrifos,isocarbophos and quinalphos,were successfully separated.The correlation coefficients were not less than 0.995 8,and the detection limits ranged from 0.32 μg/kg to 0.91 μg/kg.The recoveries were in the range of 83.2%-1345% with RSDs(n=5) of 3.4%-16.5%.The developed method was simple,rapid and sensitive,and could be applied in the determination of 9 kinds of organophosphorus pesticides residues in vegetables.

关键词

液下单液滴微萃取有机磷快速气相色谱-质谱联用蔬菜

Keywords

direct single-drop microextractionorganophosphorusrapidgas chromatography-mass spectrometry(GC-MS)vegetables

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Related Institution

School of Investigation，People′s Public Security University of China

School of Chemistry and Chemical Engineering，Southeast University

Institute of Forensic Science and Tecnology of Nanjing Public Security Bureau

Pesticide Safety Evaluation Research Center，Institute for Agro-food Standards and Testing Technology，Shanghai Academy of Agricultural Sciences

Shanghai Agriculture Technical Extension Service Center

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