Doctoral School of Science and Technology, Research Platform for Environmental Sciences (EDST-PRASE), Lebanese University, Rafic Hariri Campus, Hadath-Mount Lebanon, Lebanon.
Department of Plant Protection, Faculty of Agricultural Engineering and Veterinary Medicine, Lebanese University, Dekweneh-Beirut, Lebanon.
Molecules. 2021 Feb 22;26(4):1176. doi: 10.3390/molecules26041176.
The QuEChERS method was applied to the determination of pesticide residues in vine () leaves by LC-MSMS. The method was validated in-house for 33 pesticides representing 17 different chemical groups, that are most commonly used in grape production. Recoveries for the pesticides tested ranged from 75 to 104%, and repeatability and reproducibility relative standard deviations (RSD% and RSD%) were less than 20%. The method was applied to the analysis of pesticide residues in 17 market brands of vine leaves processed according to three different preservation methods and sampled from the Lebanese market. Dried vine leaves were more contaminated with pesticide residues than those preserved in brine or stuffed vine leaves. The systemic fungicides were the most frequently detected among all the phytosanitary compounds usually applied to grape production. Brine-preserved and stuffed vine leaves contained lower concentrations of the residues but still contained a cocktail of different pesticides.
QuEChERS 方法被应用于通过 LC-MSMS 检测葡萄叶中的农药残留。该方法在内部对 33 种农药进行了验证，这些农药代表了葡萄生产中最常用的 17 种不同的化学物质组。测试的农药回收率在 75%至 104%之间，重复性和再现性相对标准偏差（RSD%和 RSD%）小于 20%。该方法被应用于分析根据三种不同的保存方法加工的来自黎巴嫩市场的 17 个品牌的葡萄叶中的农药残留。与用盐水保存或填充的葡萄叶相比，干燥的葡萄叶受到更多的农药残留污染。在所有通常用于葡萄生产的植物保护化合物中，系统性杀菌剂是最常检测到的。用盐水保存和填充的葡萄叶中的残留浓度较低，但仍含有不同农药的混合物。
