简介: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 pesti简介: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 íg/g depending on the pesticide and matrix) while minimizing
environmental concerns, time, and labor.详细>