Multiresidue Method for the Analysis of Pesticide Residues in Fruits and Vegetables by Accelerated Solvent Extraction and Capillary Gas Chromatography

Abstract

An analytical procedure using accelerated solvent extraction and capillary gas chromatography with electron capture and flame photometric detections was developed to simultaneously determine residues of different pesticides in fruits and vegetables. Single laboratory validation of the method was carried out for 28 compounds selected from eight pesticide classes, in blank and fortified samples of fresh pear, cantaloupe, white potato, and cabbage. The method had to meet specific established validation criteria for regulatory purposes applicable to our laboratory. At each of the two fortification levels studied, 24 of the 28 pesticides gave recoveries of more than 70% with a coefficient of variation of less than 10%. With respect to existing procedures, the method showed acceptable limits of detection (from 0.0019 to 0.14 microg/g depending on the pesticide and matrix) while minimizing environmental concerns, time, and labor.

Detection of 2-Alkylcyclobutanones in Irradiated Meat, Poultry and Egg after Cooking

“…14,15) ASE has been effective in PCB analysis 15) and pesticide residue extraction, [16][17][18] and was comparable with supercritical fluid extraction in residue analysis of pollutants in soils, 19) and also dioxin analysis. 20) Concerning a toxic aspect of 2-DCB, possibilities of genotoxin and cancer promoter were indicated.…”

A gradual advancement of the extraction and cleanup techniques for residue analysis of pesticides in food matrices and liquid products: a review

“…Adou et al, 77 used ASE method and carried out single laboratory validation for 28 compounds selected from eight pesticide classes, in blank and fortified samples of fresh pear, cantaloupe, white potato, and cabbage. At each of the two fortification levels studied, 24 of the 28 pesticides gave recoveries of more than 70% with a coefficient of variation of less than 10%.…”

Modern Extraction Techniques for Pesticide Residues Determination in Plant and Soil Samples

“…In 2007, Barriada-Pereira et al described it as a satisfactory method for determining 21 OCPs in lettuce, tomato, spinach, potato, tomato and bean, and in the same year Carabias-Martínez et al (2007) used ASE to determine triazines in potato, carrot, lettuce, bean, zucchini and orange. ASE was also used for determination of 28 pesticides in pear, potato and cabbage (Adou et al, 2001). In subsequent studies, this list was expanded to 74 pesticides extracted from cucumber, lettuce and tomato (Garrido Frenich et al, 2005), and up to 130 pesticides extracted from oranges, nectarines and spinach (Cervera et al, 2010).…”