质谱法
探索者
串联质谱法
赭曲霉毒素A
选择性反应监测
农药残留
三级四极质谱仪
萃取(化学)
固相萃取
分析物
电喷雾电离
电喷雾
黄曲霉毒素
嘧霉胺
高效液相色谱法
作者
Jonatan V. Dias,Maria da Graça Pereira Nunes,Ionara R. Pizzutti,Bárbara Reichert,Aliar A. Jung,Carmem D. Cardoso
标识
DOI:10.1016/j.foodchem.2019.04.088
摘要
Abstract A simple and rapid method for simultaneous determination of pesticides and mycotoxins in red wine is presented. Sample preparation approach, called direct injection, consists of a sequence of only three steps: centrifugation, dilution and filtration. The analysis of extracts were performed by UPLC-MS/MS for determination of pesticides and mycotoxins. The method was assessed for linearity, limits of detection and quantification, matrix effects, selectivity, accuracy and precision. For recovery experiments, mycotoxins were divided in two groups according to their sensitivity in the UPLC-MS/MS system. More than 80% of the mycotoxins were reliably quantified at the lowest spike level studied (1 μg kg−1 for group 1 and 50 μg kg−1 for group 2). From the 185 evaluated pesticides, 144 showed acceptable results at 10 μg kg−1, the lowest spiked level. Matrix effects were, in most of the cases, negative, and that was observed for both pesticides and mycotoxins.
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