NDLI: Multiresidue method for the control of pesticide residues in tomatoes and derived products

Content Provider	Royal Society of Chemistry (RSC)
Author	Rodríguez, Antonio Silva Díez, Nielene Mora Díaz, Teresa Galeano Valenzuela, María Isabel Acedo Peña, Arsenio Muñoz
Copyright Year	2012
Abstract	A new multiresidue method, intended for the routine analysis of 60 multi-class pesticides in tomatoes and derived products, has been developed. The method uses gas chromatography, with a large volume injection system and tandem mass spectrometry detection (LVI-GC-MS-MS). The pretreatment of the samples is fast and simple, as the pesticide residues are extracted from the sample with ethyl acetate in presence of NaHCO3 and anhydrous Na2SO4, without additional clean-up steps and, consequently, with cost and time saving benefits. The method presents appropriate selectivity and good sensitivity with limits of quantification (LOQs) between 0.5 and 20 μg kg−1, which are lower than the maximum residue levels established by several regulatory legislation. Average recoveries between 70 and 115%, with a relative standard deviation lower than 20% in all cases, and good linearity were obtained in the studied concentration range. For the routine analysis, a quality control system was applied to avoid false positive and false negative results.
Starting Page	2543
Ending Page	2549
Page Count	7
File Format	HTM / HTML PDF
ISSN	17599660
Volume Number	4
Issue Number	8
Journal	Analytical Methods
DOI	10.1039/c2ay25189b
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Gas chromatography False positives and false negatives Pesticide Ethyl acetate Mass spectrometry Coefficient of variation
Content Type	Text
Resource Type	Article
Subject	Analytical Chemistry Engineering Chemical Engineering

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