Determination of 14 Lipophilic Pesticide Residues in Raw Propolis by Selective Sample Preparation and Gas Chromatography-Tandem Mass Spectrometry

文献类型： 外文期刊

第一作者： Wang, Xiangyun

作者： Wang, Xiangyun;Han, Lijun;Min, Shungeng;Wang, Zhiwei;Di, Shanshan;Jin, Yinyin;Qi, Peipei;Wang, Xinquan;Xiao, Yingping;Xue, Xiaofeng

作者机构：

关键词： Tau-fluvalinate; Pyrethroids; EMR-Lipid; GC-MS; MS

期刊名称：FOOD ANALYTICAL METHODS （ 影响因子：3.366； 五年影响因子：3.07 ）

ISSN： 1936-9751

年卷期： 2020 年 13 卷 9 期

页码：

收录情况： SCI

摘要： A selective and reliable method was developed and validated for the determination of 14 lipophilic pesticides in raw propolis by gas chromatography-tandem mass spectrometry (GC-MS/MS) analysis. A test portion of milled sample was extracted with n-hexane followed by back extraction with acetonitrile and cleanup using EMR-Lipid and Florisil column adsorption. Matrix-matched standards were used to compensate for matrix effects. Typical linear correlation coefficients (R-2) were >= 0.989 in concentration range of 0.001-0.200 mu g/mL. Method validation was carried out at three spiking levels and three individual days, and it was found that the mean interday average recoveries were 61.0-106.8% with relative standard deviations <= 16.9%. Limits of quantification were ranged from 0.002 to 0.020 mu g/g. Analysis of market propolis samples showed contamination by pesticides (e.g., tau-fluvalinate) to some degree.

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