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首页> 外文期刊>Chromatographia >Coupled Turbulent Flow Chromatography: LC–MS/MS Method for the Analysis of Pesticide Residues in Grapes, Baby Food and Wheat Flour Matrices
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Coupled Turbulent Flow Chromatography: LC–MS/MS Method for the Analysis of Pesticide Residues in Grapes, Baby Food and Wheat Flour Matrices

机译：湍流耦合色谱：LC-MS / MS法分析葡萄，婴儿食品和小麦粉基质中的农药残留

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摘要

This paper describes an on-line sample preparation method for the simultaneous determination of 48 pesticides in grapes, baby food and wheat flour matrices. Target pesticides were selected to represent a wide variety of chemical structures and three typical matrices were selected. Turbulent flow chromatography was applied for on-line sample cleanup directly coupled to LC–MS/MS. The aim of the method was to reduce total analysis time, eliminate manual laboratory work, provide clean extracts and achieve reproducible results. Single laboratory method validation was conducted establishing limits of detection between 0.8 and 6.0 ng g−1 for baby food, and 0.8–10.3 ng g−1 for other matrices. Within-day precision values varied between 4 and 18 %, while between-day precisions were in the range 5–22 %. Method recovery ranged from 67 to 124 %, and method accuracy was demonstrated by analysis of external quality control samples. The method was also tested on 24 different survey samples from both bio and organic origin. The method was shown to be convenient, fast and fit for purpose in meeting regulatory requirements for pesticide residue monitoring.
机译：本文介绍了一种在线样品制备方法，用于同时测定葡萄，婴儿食品和小麦粉基质中的48种农药。选择目标农药代表各种化学结构，并选择了三种典型的基质。湍流色谱法用于直接与LC-MS / MS耦合的在线样品净化。该方法的目的是减少总分析时间，消除手工实验室工作，提供干净的提取物并获得可重复的结果。进行了单实验室方法验证，确定婴儿食品的检出限在0.8至6.0 ng g-1 之间，而其他基质的检出限在0.8–10.3 ng g-1 之间。日内精度值在4％到18％之间变化，而日间精度在5-22％范围内。方法的回收率为67％至124％，并且通过分析外部质量控制样品证明了方法的准确性。该方法还对来自生物和有机来源的24种不同调查样本进行了测试。结果表明该方法方便，快速且适合用于满足农药残留监测法规要求。

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