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Arthropods, 2022, 11(1): 65-71
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Article

Determination of fenpropathrin residue by QuEChERS method and GC/MS

Bahareh Rafiei1, Seyed Reza Bastan2
1Plant Protection Research Department, Guilan Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Rasht, Iran
2Department of Agronomy, Rasht Branch, Islamic Azad University, Rasht, Iran

Received 15 November 2021;Accepted 25 December 2021;Published 1 March 2022
IAEES

Abstract
Chemical pesticides are used worldwide to control pests. This study investigated the residues of the pesticide fenpropathrin in greenhouse tomatoes (Vendor variety). Sample preparation was performed by QuEChERS method, and solid-phase extraction (SPE) cartridges were used for purification. Residual evaluation of this pesticide was carried out using doses (1, 2, and 4 g/lit) in greenhouse tomatoes. Samples were collected at intervals of one, three, five, seven, and ten days after spraying and analyzed by chromatographic gas spectroscopy. The results were compared with the maximum residue level (MRL = 0.5 mg/kg) established by Codex Alimentarius. The recovery of fenpropathrin was estimated to be 98.68% at a level of 0.5 ppm. In addition, the preharvest period for fenpropathrin 2 g/lit was determined in greenhouse tomatoes 3 days after spraying. The results also illustrated that increasing the dose of pesticide enhanced the remaining amount.

Keywords fenpropathrin;residue;QuEChERS;SPE;GC-MS.


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