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采用乙酸乙酯萃取,结合气相色谱-串联质谱检测和液相色谱-串联质谱检测分析水果和蔬菜中的农药残留。

Analysis of pesticide residues in fruit and vegetables with ethyl acetate extraction using gas and liquid chromatography with tandem mass spectrometric detection.

作者信息

Pihlström Tuija, Blomkvist Gun, Friman Paula, Pagard Ulla, Osterdahl Bengt-Göran

机构信息

Research and Development Department, National Food Administration, P.O. Box 622, SE-751 26, Uppsala, Sweden.

出版信息

Anal Bioanal Chem. 2007 Nov;389(6):1773-89. doi: 10.1007/s00216-007-1425-6. Epub 2007 Jul 4.

Abstract

A multiresidue method based on extraction with ethyl acetate has been used at the Swedish National Food Administration since 1989 to monitor pesticide residues in fruit and vegetables. The method has been continuously adjusted, resulting in simple and quick analyses of pesticide residues. To recover basic pesticides, the addition of an alkali is necessary. The addition of sodium hydrogen carbonate has been shown to recover all pesticides effectively without any degradation. The liquid chromatography (LC) with tandem mass spectrometry (MS/MS) technique has made it possible to analyse more polar pesticides and to replace many single methods. The latest development in the multiresidue method, comprising the use of gas chromatography (GC) with MS/MS, has further improved the analysis by replacing the conventional GC detectors. The need for cleanup has been reduced or eliminated entirely. Consequently, the method has been simplified in a way that makes it possible to recover all included analytes in many different matrices in one single extraction and to detect them either with GC-MS/MS or with LC-MS/MS.

摘要

自1989年以来,瑞典国家食品管理局一直使用一种基于乙酸乙酯萃取的多残留方法来监测水果和蔬菜中的农药残留。该方法不断调整,实现了对农药残留的简单快速分析。为了回收碱性农药,添加碱是必要的。已证明添加碳酸氢钠可有效回收所有农药且不会造成任何降解。液相色谱(LC)与串联质谱(MS/MS)技术使得分析极性更强的农药并取代许多单一方法成为可能。多残留方法的最新进展,包括使用气相色谱(GC)与MS/MS,通过取代传统的GC检测器进一步改进了分析。净化需求已减少或完全消除。因此,该方法得到了简化,能够在一次萃取中从许多不同基质中回收所有包含的分析物,并使用GC-MS/MS或LC-MS/MS进行检测。

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