杀虫剂
农药残留
电喷雾电离
基质(化学分析)
检出限
化学
色谱法
质谱法
液相色谱-质谱法中的离子抑制
残留物(化学)
串联质谱法
复矩阵
分析化学(期刊)
生物系统
有机化学
生物
农学
作者
Jiaan Qin,Yanwei Fu,Qian Lü,Xiaobing Dou,Jiaoyang Luo,Meihua Yang
标识
DOI:10.1016/j.microc.2020.105681
摘要
Matrix effects are major concerns in pesticide residue analysis, which can adversely affect the identification and quantification of pesticide residues especially for complex matrices. In this study, a flexible and effective electrospray ionization tandem mass spectrometry method based on matrix-matched monitoring ion selection strategy was developed to eliminate the interferences of complex matrice co-extractives in pesticide residue analysis. The detection ions of 27 typical pesticides were optimized to improve qualitative accuracy of pesticide residues in complex matrices Chrysanthemum. The optimized ionization and chromatographic conditions were used for the detection of 196 pesticides in Chrysanthemum. Using this strategy, the limit of quantification was determined to be ≤5 μg/kg and the recoveries were within 70–120% for the majority of the pesticides. This work provides a practical strategy and theoretical guidance for the development of pesticide detection in complex matrices.
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