Pesticide residues in fruits and vegetables of the argentine domestic market: Occurrence and quality

The presence of pesticides in fruits and vegetables has been a growing concern in Argentina. Only three of the major marketplaces there have the necessary infrastructure to determine pesticide residues in produce. The aim of this study was to investigate the presence of such residues in nationally produced fruits and vegetables for domestic consumption in order to evaluate the present state of the market. A total of 135 of the most widely consumed fruits and vegetables were analyzed for 35 pesticides. The analyses utilized a QuEChERS™ multiresidue-extraction kit along with tandem gas chromatography–mass spectrometry. The results were evaluated according to maximum residue limits (MRLs) for each commodity and pesticide according to national regulation. Pesticides were detected in 65% of the total samples, in 44% of the positive samples at or below the MRLs, and in 56% above the MRLs. Oranges had the highest pesticide concentration detected, but carrots had the highest frequency of noncompliance among the produce items sampled. Five pesticides were detected at frequencies above 10%, the highest being chlorpyrifos in 25.9% of the total samples. In other countries, the percentage of samples above the MLR is 4 times lower than our findings, and 7 times lower for exported products. An implementation of programs designed to facilitate awareness, capacitation, and monitoring is urgently recommended.

Fil: Mac Loughlin, Tomas Mariano. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de Investigaciones del Medio Ambiente - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones del Medio Ambiente; Argentina

Fil: Peluso, María Leticia. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de Investigaciones del Medio Ambiente - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones del Medio Ambiente; Argentina

Fil: Etchegoyen, María Agustina. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de Investigaciones del Medio Ambiente - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones del Medio Ambiente; Argentina

Fil: Alonso, Lucas Leonel. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de Investigaciones del Medio Ambiente - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones del Medio Ambiente; Argentina

Fil: de Castro, María Cecilia. Universidad Nacional de La Plata. Facultad de Ciencias Exactas; Argentina

Fil: Percudani, María Cecilia. Universidad Nacional de La Plata. Facultad de Ciencias Exactas; Argentina

Fil: Marino, Damian Jose Gabriel. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de Investigaciones del Medio Ambiente - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones del Medio Ambiente; Argentina