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首页> 外文期刊>The Science of the Total Environment >Exploration of environmental contaminants in honeybees using GC-TOF-MS and GC-Orbitrap-MS
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Exploration of environmental contaminants in honeybees using GC-TOF-MS and GC-Orbitrap-MS

机译：使用GC-TOF-MS和GC-Orbitrap-MS探索蜜蜂中的环境污染物

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This study reports an analytical approach by gas chromatography and high-resolution mass spectrometry (HRMS) intended to be used for investigation of non-targeted environmental contaminants in honeybees. The approach involves a generic extraction and analysis with two GC-HRMS systems: time-of-flight and Orbitrap analyzers, GC-TOF-MS, and GC-Orbitrap-MS operated in electron-impact ionization (EI) mode. The work flow for screening of non-targeted contaminants consisted of initial peak detection by deconvolution and matching the first-stage mass spectra EI-MS with a nominal mass spectral library. To gain further confidence in the structural characterization of the contaminants under investigation, molecular formula of representative ions (molecular and fragment ions) was provided for those with an accurate mass scoring (error b 5 ppm). This methology was applied for screening environmental contaminants in 75 samples of adult honeybee. This approach has provided the tentative identification of environmental contaminants belonging to different chemical groups, among them, PAHs, phthalates and synthetic musks. Residues of veterinary treatments used in apiculture were also detected in the honeybee samples. (c) 2018 The Authors. Published by Elsevier B.V.
机译：这项研究报告了一种气相色谱和高分辨率质谱（HRMS）的分析方法，旨在用于研究蜜蜂中非目标环境污染物。该方法涉及使用两个GC-HRMS系统的通用提取和分析：飞行时间和Orbitrap分析仪，GC-TOF-MS和以电子碰撞电离（EI）模式运行的GC-Orbitrap-MS。筛选非目标污染物的工作流程包括通过反卷积检测初始峰并将第一阶段质谱EI-MS与标称质谱库进行匹配。为了使人们对所研究的污染物的结构特征有更多的信心，为那些具有精确质量得分（误差b 5 ppm）的离子提供了代表性离子的分子式（分子和碎片离子）。该方法用于筛选75种成年蜜蜂中的环境污染物。这种方法已初步确定了属于不同化学类别的环境污染物，其中包括多环芳烃，邻苯二甲酸盐和合成麝香。蜜蜂样品中还检出了养蜂业中使用的兽药残留。 （c）2018作者。由Elsevier B.V.发布

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