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首页> 外文期刊>Rapid Communications in Mass Spectrometry: RCM >Aquatic plant-derived changes in oil sands naphthenic acid signatures determined by low-, high- and ultrahigh-resolution mass spectrometry
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Aquatic plant-derived changes in oil sands naphthenic acid signatures determined by low-, high- and ultrahigh-resolution mass spectrometry

机译：低，高分辨率和超高分辨率质谱法测定油砂中环烷酸特征的水生植物变化

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Mass spectrometry is a common tool for studying the fate of complex organic compound mixtures in oil sands processed water (OSPW), but a comparison of low-, high- (similar to 10000), and ultrahigh-resolution (similar to 400000) instrumentation for this purpose has not previously been made. High-resolution quadrupole time-of-flight mass spectrometry (QTOF MS) and ultrahigh-resolution Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS), with negative-ion electrospray ionization, provided evidence for the selective dissipation of components in OSPW. Dissipation of oil sands naphthenic acids (NAs with general formula CnH2n+zO2 where n is the number of carbon atoms, and Z is zero or a negative even number describing the number of rings) was masked (by components such as fatty acids, O-3, O-5, O-6, O-7, SO2, SO3, SO4, SO5, SO6, and NO4 species) at low resolution (1000) when using a triple quadrupole mass spectrometer. Changes observed in the relative composition of components in OSPW appear to be due primarily to the presence of plants, specifically cattails (Typha latifolia) and their associated microorganisms. The observed dissipation included a range of heteratomic species containing O-2, O-3, O-4, and O-5, present in Athabasca oil sands acid extracts. For the heteratomic 02 species, namely naphthenic acids, an interesting structural relationship suggests that low and high carbon number NAs are dissipated by the plants preferentially, with a minimum around C-14/C-15. Other heteratomic species containing O-6, O-7, SO2, SO3, SO4, SO5, SO6, and NO4 appear to be relatively recalcitrant to the cattails and were not dissipated to the same extent in planted systems. Copyright (C) 2009 John Wiley & Sons, Ltd.
机译：质谱分析是研究油砂加工水（OSPW）中复杂有机化合物混合物的结局的常用工具，但是将低，高（类似于10000）和超高分辨率（类似于400000）仪器进行了比较。以前没有达到这个目的。带有负离子电喷雾电离的高分辨率四极杆飞行时间质谱（QTOF MS）和超高分辨率傅里叶变换离子回旋共振质谱（FT-ICR MS），为OSPW中组分的选择性耗散提供了证据。消散了油砂环烷酸（通式为CnH2n + zO2的NA，其中n为碳原子数，Z为零或描述环数的负偶数）的消散（通过脂肪酸，O- 3，使用三重四极杆质谱仪以低分辨率（1000）分离O3，O-5，O-6，O-7，SO2，SO3，SO4，SO5，SO6和NO4种类。在OSPW中观察到的组分相对组成的变化似乎主要归因于植物的存在，特别是香蒲（香蒲（Typha latifolia））及其相关微生物的存在。观察到的耗散包括阿萨巴斯卡油砂酸提取物中存在的一系列杂原子物种，其中包含O-2，O-3，O-4和O-5。对于杂原子02物种，即环烷酸，一种有趣的结构关系表明，低碳数和高碳数的NAs会优先被植物耗散，最小的C-14 / C-15左右。包含O-6，O-7，SO2，SO3，SO4，SO5，SO6和NO4的其他杂原子物种似乎对香蒲相对顽强，并且在种植系统中的消散程度不同。版权所有（C）2009 John Wiley＆Sons，Ltd.

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