Journal
FOOD CHEMISTRY
Volume 113, Issue 2, Pages 712-719Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2008.07.103
Keywords
Pesticide residues; Fruit juices; MSPD; LC-MS; LC-MS(2)
Funding
- Ministry of Science of the Republic of Serbia [142002]
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A rapid and sensitive liquid chromatography-tandem mass spectrometry method has been developed for the analysis of acephate, monocrotophos, carbendazim, acetamiprid, dimethoate, simazine, carbofuran, atrazine, diuron, DNOC (4,6-dinitro-o-cresol), malathion and tebufenozide in fruit juices. Extracts were obtained by matrix solid-phase dispersion using diatomaceous earth as dispersant and dichloromethane as eluent. Significant matrix effects observed for most of the pesticides tested were eliminated using matrix-matched standards. The quantification of the analytes was carried out using the most sensitive transition. The confirmation of residues detected in real samples was performed by repeated injection and acquiring additional transitions to that used for quantification. Recoveries were in the range 71-118%. Repeatability of the method, expressed as the relative standard deviation, was in general between 5-15%. Low limits of detection (0.01-0.94 ng ml(-1)) and quantification (0.03-3.12 ng ml(-1)) were readily achieved with this method for all tested pesticides. (c) 2008 Elsevier Ltd. All rights reserved.
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