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首页> 外文期刊>Journal of pesticide science >A rapid and sensitive analysis of dithiocarbamate fungicides using modified QuEChERS method and liquid chromatography-tandem mass spectrometry
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A rapid and sensitive analysis of dithiocarbamate fungicides using modified QuEChERS method and liquid chromatography-tandem mass spectrometry

机译：用改性QueChers方法和液相色谱 - 串联质谱法对二硫代氨基甲酸酯杀菌剂的快速敏感分析

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摘要

We herein present a method for the analysis of 10 dithiocarbamate fungicides (DTCs) in beer, fruit juice, and malt samples, where the DTCs were converted into water-soluble sodium salts in the presence of NaHCO3 prior to methylation using dimethyl sulfate. Extraction of the methylated compounds from matrices was performed using a "quick, easy, cheap, effective, rugged, and safe" (QuEChERS) method. Following a dispersive solid -phase extraction as a clean-up step, the methylated compounds were detected by liquid chromatography -tandem mass spectrometry. Performance evaluation was carried out on beer, fruit juice, and malt samples using representative compounds. Accuracies of the spiked compounds from the various matrices ranged from 92.2 to 112.6%, and the limits of quantification of propineb, mancozeb, and thiuram were 0.52, 0.55, and 6.97 mu g/kg, respectively. The developed method was then applied in the determination of dithiocarbamate fungicide contents in commercial beer and fruit juice samples. (C) Pesticide Science Society of Japan
机译：我们在本文中，在使用二甲基硫酸甲酯之前，在啤酒，果汁和麦芽样品中分析10种二硫代氨基甲酰胺杀菌剂（DTCS）的方法，其中DTC在NaHCO 3存在下在NaHCO 3存在下转化为水溶性钠盐。使用“快速，容易，廉价，有效，坚固的”和安全的“（QueChers）方法进行来自基质的甲基化化合物的提取。在分散的固体萃取作为清洁步骤之后，通过液相色谱法检测甲基化化合物 - 用于质谱法。使用代表性化合物对啤酒，果汁和麦芽样品进行性能评估。来自各种基质的尖刺化合物的精度范围为92.2-112.6％，以及丙蛋白酶，mancozeb和硫仑的定量限值分别为0.52，<0.55，以及6.6.97μg/ kg。然后将开发方法应用于商业啤酒和果汁样品中二硫代氨基甲酸酯杀菌含量的测定。 （c）日本农药科学学会

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