Abstract

COELLO-VILLANUEVA, Jocelyn María; ACERETO-ESCOFFIE, Pablo Oscar Martín; BARRON-ZAMBRANO, Jesús Alberto  and  MUNOZ-RODRIGUEZ, David. Evaluation of QuEChERS Method for GC Analysis of Pesticides in Tropical Fruits from Yucatan, Mexico. J. Mex. Chem. Soc [online]. 2017, vol.61, n.4, pp.290-296. ISSN 1870-249X.

The pesticides intake causes health problems; therefore, food must not exceed the maximum allowable limits. The aim of this work was the evaluation of a multi-residue method for the determination of eleven pesticides in tropical fruits of Yucatan, Mexico. Pesticide extraction was carried out with acetonitrile and clean-up by dispersive solid phase extraction (QuEChERS method). The extracts were analyzed by GC/MS. The quantification was performed by the external standard matrix match calibration. Most of the quantification limits were below 10 ng?g-1. In 70% of the cases, the relative standard deviation was lower than 15%. The pesticide recoveries ranged from 67.74% to 138.57%. The method allowed the quantification of pesticides in papaya, melon, dragon fruit and sugar apple.

Keywords : Gas chromatography; QuEChERS; multiresidue analysis; pesticides; tropical fruits.

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