中文摘要：本研究采用改进的多插头过滤净化（M-PFC）程序分析韭菜中183种农药残留，然后采用气相色谱-串联质谱法进行农药残留检测。应用M-PFC方法后，大多数农药残留的平均回收率为70.2-126.0%，相对标准差小于20%。检测限为0.03-3.3μg/kg，定量限为 0.1-10μg/kg。使用改进的多插头过滤净化（M-PFC）程序不仅方便、高效而且省时，本文所构建方法成功应用于市售韭菜样本中的农药残留检测，结果从29个样本中检测出了35中农药残留，且残留量从2.0μg/kg到9353.1μg/kg不等。
外文摘要：This study reports the development of a novel multiplug filtration cleanup (m-PFC) procedure for analysis of pesticide residues in leek samples followed by gas chromatography-tandem mass spectrometry detection. The leek samples were initially purified following the dispersive solid-phase extraction with different sorbents to determine the most suitable proportioning of sorbent materials; then, the m-PFC method was carried out by applying the streamlined procedure with syringes. Average recoveries of most pesticides were in the range from 70.2 to 126.0% with the relative standard deviation < 20% with the m-PFC process. The limits of detection were 0.03-3.3 mu g kg(-1). The limits of quantification were 0.1-10 mu g kg(-1). The m-PFC process is convenient and time-efficient, taking just a few seconds per sample. Finally, the developed method was successfully applied to the determination of pesticide residues in market samples. In that analysis, 35 pesticides were detected in 29 samples, with values ranging from 2.0 to 9353.1 mu g kg(-1).
外文关键词：d-SPE, leek, MWCNTs, m-PFC, pesticide residue analysis
作者：Zou, Nan; Han, Yongtao; Li, Yanjie; Qin, Yuhong; Gu, Kejia; Zhang, Jingru; Pan, Canping; Li, Xuesheng
作者单位：China Agr Univ, Coll Sci, Dept Appl Chem, Beijing 100193, Peoples R China.
期刊名称：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
期刊影响因子：2.857
出版年份：2016
出版刊次：8
点击下载：基于快速多插头过滤净化和气相色谱-串联质谱法的韭菜183种农药的多残留检测