Table of Contents
Chromatography Research International
Volume 2011, Article ID 713256, 6 pages
http://dx.doi.org/10.4061/2011/713256
Research Article

Determination of Insecticide Residues in Vegetal Fruits

1Departamento de Química Analítica e Físico Química, Universidade Federal do Ceará, Rua do Contorno, S/N Campus do Pici Bl 940 CEP, 60451-970 Fortaleza, CE, Brazil
2Parque de Desenvolvimento Tecnológico do Ceará, Universidade Federal do Ceará, Campus do Pici, CEP, 60457-970 Fortaleza, CE, Brazil
3Departamento de Engenharia Hidráulica e Saneamento, Universidade Federal do Ceará, Rua do Contorno, S/N Campus do Pici Bl 713 CEP, 60451-970 Fortaleza, CE, Brazil

Received 4 November 2010; Accepted 23 December 2010

Academic Editor: Esther Turiel

Copyright © 2011 Dasciana Rodrigues et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Pesticides compounds represent an important class of pollutants for food, soil and surface water resources. Thus, a simplified method using gas chromatography was used for determining five insecticide residues in fruit samples produced in Ceará State (Brazil). The insecticides were simultaneously extracted from the fruit samples with a mixture of water-methanol (1 : 1% v/v) from lipid-containing crops and then reextracted with ethyl acetate. Cleanup by silica gel column chromatography was not necessary. The extracts were analyzed by GC-ECD. Analytical parameters, such as limit of detection (LOD), limit of quantification (LOQ), linearity, precision, and recovery were considered for the orange fruit. A sufficient recovery of 52.1, 57.0, 49.5, and 108.5% for parathion methyl, malathion, chlorpyrifos, and 2,4-dichlorophenol was found. The compounds 2,4-dichlorophenol, malathion, parathion methyl, and chlorpyrifos were found in all the fruit samples analyzed.