In this study, the photodegradation of organophosphorus (OPs) pesticides in the honey medium was evaluated under sunlight irradiation. Some of the 22 samples collected at different sites contained OPs pesticides (Methyl parathion, Coumaphos and Fenitrothion) with an average of 8 ng/g. Moreover, three samples were found with pesticide residue levels exceeding the maximum residue limits (MRL ≥ 50 ng/g) imposed by the standard water (WHO). Gas chromatography (GC) combined with a tritium electron capture detector system was used for the analysis of OPs pesticides in honey. Total degradation of the Methyl parathion was obtained in less than 60 min of irradiation. Moreover, the elimination of the other OPs found in the samples was also effective with a rate of 85% for Coumaphos and Fenitrothion after 50 min of sunlight irradiation. The kinetics of the photodegradation reaction of all OPs pesticides studied followed a pseudo-first order model.

中文翻译：

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太阳光对蜂蜜培养基中有机磷农药的光降解作用。

在这项研究中，在阳光照射下评估了蜂蜜培养基中有机磷（OPs）农药的光降解。在不同地点收集的22个样品中，有一些含有OPs农药（甲基对硫磷，库马磷和杀nitro磷），平均含量为8 ng / g。此外，还发现了三个样品，其农药残留水平超过了标准水（WHO）规定的最大残留限量（MRL≥50 ng / g）。气相色谱（GC）结合a电子捕获检测器系统用于分析蜂蜜中的OPs农药。在不到60分钟的辐照下，甲基对硫磷完全降解。此外，在阳光照射50分钟后，消除样品中发现的其他OP的效果也很有效，对库马磷和杀nitro磷的比率为85％。