Kinetic Study of the Dissipation of Diazinon Pesticide Using UHPLC Method in Peach, and Cherry Samples

In this study, an optimized QuEChERS method combined with ultra-high-performance liquid chromatography (UHPLC) was employed to quantify residue levels. The amount of diazinon pesticide in peach and cherry samples at days after use with the permitted dose of ۲۵ g was ۱.۶۶ mg/kg for peach samples and ۱.۸۲ mg/kg for cherry samples. The first-order kinetic model describes the loss patterns in all products, with half-lives of ۱.۸ days for the peach samples and ۱.۹ days for the cherry samples. Method validation was achieved based on the recovery percentage values obtained from the samples for inter-day repeatability RSDs% (n=۲۱) for peach samples ۱۳.۲% and cherry samples ۱۵.۶%. The method validation was obtained recovery values from the samples for intera-day repeatability RSDs% (n=۷) was achieved based on the ۹۲.۵–۱۰۶.۲% recovery for the peach samples with RSD ≤۷.۱%, and was achieved based on the ۹۲.۰–۱۰۲.۰% recovery for cherry samples with RSD ≤۵.۲%. The proposed UHPLC method could selectively separate diazinon pesticides from peach, and cherry samples. Furthermore, the method in this research employed can be adapted for studying other pesticide compounds with low concentrations in fruits, water, and soil, highlighting the versatility of the method employed.

کلیدواژه ها:

Diazinon pesticide ، dissipation ، Half-Lives ، Peach and Cherry samples ، UHPLC method