Multiresidue determination of pesticides in fruit and vegetables by gas chromatography/tandem mass spectrometry

Auteur(s) :
Gamon M., Lleo C., Mocholi F., Mertens A.
Date :
Juin, 2001
Source(s) :
JOURNAL OF AOAC INTERNATIONAL. #84:4 p1209-1216
Adresse :
"GAMON M,GENERALITAT VALENCIANA,LAB AGROALIMENTARIO;PINTOR GOYA 8; VALENCIA 46100, SPAIN." amolina@ujaen.es

Sommaire de l'article

Pesticide residues in fruit and vegetables were determined by gas chromatography/tandem mass spectrometry (GC/MS/MS). Electron impact (EI)/MS/MS and chemical ionization (Cl)/MS/MS were developed for 80 compounds, including organochlorine, organophosphorus, organonitrogen, and pyrethroids, providing unambiguous spectral confirmation for these complex matrixes. Residues were extracted from samples with acetone followed by a mixture of dichloromethane-petroleum ether. Two injections per sample were required for analysis of the entire pesticide list by EI/MS/MS and CI/MS/MS. Initial steps involving cleanup and concentration of extracts were eliminated. The excellent selectivity and good linearity allowed quantification and identification of low levels of pesticides in the most difficult matrixes. The method has been used for routine analysis of many vegetables.

Source : Pubmed
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