Determination and analysis of pes ticide residues in fieldgrown and greenhouse-grown tomatoes using liquid chromatography-mass spectrometry
Article Type:
Research/Original Article (بدون رتبه معتبر)

The present s tudy aimed to extract pes ticide residues in the field and greenhouse-grown tomatoes and homemade pas te based on the quick, easy, cheap, effective, rugged, and safe sample preparation method (QuEChERS) before determined by the liquid chromatography-mass spectrometry (LC-MS). The mean difference in percentage reduction of deltamethrin (DLM) and acetamiprid (ACT) in raw tomatoes of greenhouse-grown was obtained at 91.42 and 90.00%, respectively, which was insignificantly more than filed condition (84.91% and 86.34%). Maximum reduction percentages of the DLM in pas te under greenhouse and field tomato conditions were achieved by more than 95.86% and 93.11%, respectively. The residual concentration of both DLM (91.42%) and ACT (90.00%) in the greenhouse decreased more than the field (84.91% and 86.34%), respectively. Abamectin(ABA) reached below the MRL in a shorter time after spraying (2 days). Considering the pre-harves t interval (PHI) period of deltamethrin and abamectin can reach their residual concentration to the MRL in both conditions, which were determined by LC-MS. According to the results of the current s tudy, 7 and 5 days can be sugges ted as the PHI period of the acetamiprid for field and greenhouse-grown tomatoes, respectively. Therefore, using pes ticides in the proper dosage, considering appropriate PHI, and harves ting can reduce their residues in agricultural products.

Analytical Methods in Environmental Chemistry Journal, Volume:6 Issue: 1, Mar 2023
100 to 114  
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