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Updated: Oct 11, 2025

Avocado Sample Preparation Using the QuEChERS Method with Ammonium Formate for Pesticide Analysis
Published on: December 8, 2023
Pesticide residues analysis in passion fruit and its processed products by LC-MS/MS and GC-MS/MS: Method validation,
Joseane de Oliveira Mozzaquatro1, Izabelle Araújo César1, Anna Eduarda Barbosa Pinheiro1
1Laboratory of Toxicology, Department of Pharmacy, University of Brasília, Brasília, Federal District 70910-900, Brazil.
Abstract:
A method for the determination of 80 pesticides (including five metabolites) in passion fruit using ethyl acetate extraction and dispersive solid-phase extraction followed by LC-MS/MS and GC-MS/MS was validated at LOQ of 0.005 or 0.010 mg kg-1 (70 to 120% recovery; RSD ≤ 20%). Fifty-five passion fruit samples were obtained from producers, and 30 samples of frozen pulp and 12 samples of flour purchased. About 27% of the pesticides were detected; at least one in 60% of the peel samples, mainly imidacloprid and carbendazim (max. of 0.274 mg kg-1). Median processing factor was 0.5 for washed peel and 6.5 for dried peel (flour). About 63% of frozen pulp samples were positive, and 4 flour samples contained residues, mainly methamidophos. About 70% of the detected pesticides are not authorized in passion fruit in Brazil. Chronic and acute exposure from the consumption of passion fruit products did not indicate a health concern.
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