Selection of a Representative Matrix for Calibration in Multianalyte Determination of Pesticides in Vegetables by Liquid Chromatography-Electrospray Tandem Mass Spectrometry |
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| Authors: | J L Martínez Vidal A Garrido Frenich T López López I Martínez Salvador L Hajjaj el Hassani M Hassan Benajiba |
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| Institution: | (1) Department of Analytical Chemistry, University of Almería, 04071 Almería, Spain;(2) Laboratory of Pesticide Residues CUAM, 04700 El Ejido Almería, Spain;(3) Département de Biologie, Université Abdelmalek Essaâdi, 93002 Tetouan, Morocco |
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| Abstract: | An analytical method for determining residues of twenty pesticides by liquid chromatography (LC) coupled to electrospray ionisation (ESI) tandem mass spectrometry (MS-MS) in eight commodities, cucumber, tomato, pepper, green bean, eggplant, zucchini, melon and watermelon, has been developed and validated. On one hand, calibration curves prepared in solvent were compared with calibration curves prepared in a blank matrix extract of each target matrix. On the other hand, calibration curves and recoveries for each commodity were compared. Cucumber was selected as potential reference matrix for the target vegetables. |
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| Keywords: | Column liquid chromatography-mass spectrometry Matrix effects Pesticide residues in vegetables |
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