Quantitative analysis of polybrominated diphenyl ethers in earthworms and soil by gas chromatography coupled to ion-trap tandem mass spectrometry.
Quantitative analysis of polybrominated diphenyl ethers in earthworms and soil by gas chromatography coupled to ion-trap tandem mass spectrometry.
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DOI：
10.1002/rcm.3374
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发表时间：
2008-02
期刊：
影响因子：
--
通讯作者：
Lingyan Zhu;B. Ma;Xianwei Liang
中科院分区：
文献类型：
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作者：
Lingyan Zhu;B. Ma;Xianwei Liang
建立了土壤和蚯蚓中多溴联苯醚（PBDEs）的气相色谱-离子阱串联质谱（GC/ITMS）分析方法。结果表明，当考虑到灵敏度、特异性和复杂基体的潜在干扰时，[M]+团簇作为碰撞诱导解离（CID）前体离子的性能优于[M-2Br]+。其他参数，如谐振激励电压，“q”值，也进行了优化。为评价ITMS方法的适用性，将优化后的方法应用于蚯蚓和土壤等不同样品中多溴联苯醚的分析，并与选择离子监测（SIM）方法进行比较。在分析真实的环境样品时，ITMS比SIM具有更高的灵敏度。
A method coupling gas chromatography to ion-trap tandem mass spectrometry (GC/ITMS) was developed and optimized for the analysis of polybrominated diphenyl ethers (PBDEs) in soil and earthworms. It was found that the molecular ion [M]+ cluster provided better performance than the [M-2Br]+ as a collision-induced dissociation (CID) precursor ion for most congeners when considering sensitivity, specificity and potential interference from complicated matrices. Other parameters such as the resonant excitation voltage, 'q' value, were also optimized. To evaluate the suitability of the ITMS method, the optimized method was applied for the analysis of PBDEs in different samples including earthworms and soil, and its performance was compared with that of selected ion monitoring (SIM). It was found that ITMS offered higher sensitivity than SIM when analyzing real environmental samples.