Multiresidue method for triazines and pyrethroids determination by solid-phase extraction and gas chromatography-tandem mass spectrometry

This research aimed at implementing and validating a method for analysis of pesticide residues in crops. QuEChERS extraction method with PSA purification was used following analyzes by gas chromatography with tandem mass spectrometry in Selected Reaction Monitoring mode. A short run method was succe...

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Published in:Journal of environmental science and health. Part B, Pesticides, food contaminants, and agricultural wastes Vol. 55; no. 10; pp. 865 - 875
Main Authors: Lachter, Daniela R., Nudi, Adriana H., Porto, Giovana F., Ribeiro, Raquel A. L., Wagener, Angela L. R., Masone, Carlos German
Format: Journal Article
Language:English
Published: Philadelphia Taylor & Francis 2020
Taylor & Francis Ltd
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Summary:This research aimed at implementing and validating a method for analysis of pesticide residues in crops. QuEChERS extraction method with PSA purification was used following analyzes by gas chromatography with tandem mass spectrometry in Selected Reaction Monitoring mode. A short run method was successfully developed for the determination of 41 pesticides, confirmed by two precursor-products for each analyte. The calibration curve for each analyte was linear at concentration range from 1 to 500 μg kg −1 with correlation coefficients higher than 0.99, low limits of detection (0.03 − 10.22 μg kg −1 ) and satisfactory precision. The developed method was used to investigate apples; mangos; strawberries; cucumbers and tomatoes from the Rio de Janeiro Food Distribution Center (CEASA).Most of the targeted pesticides (78%) were below detection limits. Apple and strawberry presented the highest pesticide contamination levels, many of which are not authorized by tthe Brazilian national regulatory agency (ANVISA).
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ISSN:0360-1234
1532-4109
DOI:10.1080/03601234.2020.1790266