中文摘要：本文采用HILIC-MS/MS和hilic-tofms方法对HILIC分离后的橄榄油和橄榄样本中的七种极性农药（杀草强、灭蝇胺、敌草快，百草枯，缩节胺，三甲基和三乙膦酸铝）进行了残留测定。研究结果发现橄榄油和橄榄中的农药含量均低于5μg/kg的极限值，低于欧盟立法规定的最大残留限量值。
外文摘要：This article reports the development of two HPLC-MS methods for the determination of polar pesticides in olive oil and olive samples by hydrophilic interaction liquid chromatography (HILIC) separation followed by mass spectrometry detection with tandem mass spectrometry using a triple quadrupole instrument operated in multiple reaction monitoring mode (HILIC-MS/MS) or electrospray time-of-flight mass spectrometry (HILIC-TOFMS). The selected polar pesticides included in the study were: amitrol, cyromazine, diquat, paraquat, mepiquat, trimethylsulfonium (trimesium, glyphosate counterion) and fosetyl aluminium. The simple sample treatment procedure was based on liquid partitioning with methanol. The performance of the sample extraction was evaluated in terms of recovery rates and matrix effects in both olive oil and olives matrices. The results obtained for olive oil were satisfactory while, due to the high complexity of olives, poor recovery rates were obtained for the extraction of diquat, paraquat and amitrol, although with a reasonable precision enabling its use in routine analysis. Similarly, matrix effects were minor in the case of olive oil (ca. 20% suppression average), while significantly higher suppression was observed for olives (30-50% suppression average). The studied approaches were found to be useful for the determination of the pesticides studied in olive oil and olives with limits of quantitation below 5 mu g kg(-1) in most cases when tandem mass spectrometry was used, thus being in compliance with MRLs set by current EU regulation. (C) 2016 Elsevier B.V. All rights reserved.
外文关键词：Liquid chromatography/mass spectrometry；(LC–MS)；Polar pesticides；HILIC；Olive oil；Olives
作者：Nortes-Méndez, Rocío；Robles-Molina Lopez-Blanco, José；López-Blanco, Rafael
期刊名称：Talanta
期刊影响因子：4.035
出版年份：2016
出版刊次：5
点击下载：采用HILIC-MS/MS和hilic-tofms方法检测橄榄油和橄榄样本中极性农药的残留