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首页> 外文会议>IWA(International Water Association) International Conference on Odours and VOCs; 20030914-17; Singapore(SG) >Analysis of sulfur and nitrogen odorants using solid-phase microextraction and GC-MS
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Analysis of sulfur and nitrogen odorants using solid-phase microextraction and GC-MS

机译：固相微萃取和GC-MS分析硫和氮气味剂

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摘要

An analytical method involving solid-phase micro-extraction (SPME) and gas chromatography-mass spectrometry (GC-MS) was applied to analyze biosolids odors. A selective ion monitoring (SIM)-based MS method was developed, using SPME injections of odorant standards under the full-scan mode to select the quantification and confirmation ions for each odorant. The odorants analyzed in this study include: dimethylsulfide, dimethyldisulfide, methyl mercaptan, hydrogen sulfide, carbon disulfide, trimethylamine and dimethylamine. We have used this method to quantify parts-per-billion levels of odorant vapors produced during anaerobic incubation of digested wastewater sludge. Important considerations for expedient and accurate calibration under static and dynamic flow conditions are discussed. The SPME-GC-MS method may give a positive intercept in the calibration curve, especially under static sampling conditions, which sets a practical detection limit for odor analysis.
机译：采用固相微萃取（SPME）和气相色谱-质谱（GC-MS）分析方法对生物固体气味进行分析。开发了一种基于选择性离子监控（SIM）的MS方法，该方法在全扫描模式下使用SPME注入加味剂标准品，以选择每种加味剂的定量和确认离子。在这项研究中分析的气味包括：二甲硫，二甲二硫，甲硫醇，硫化氢，二硫化碳，三甲胺和二甲胺。我们已经使用这种方法来量化消化的废水污泥厌氧培养过程中产生的十亿分之几的气味蒸汽。讨论了在静态和动态流量条件下方便，准确校准的重要考虑因素。 SPME-GC-MS方法可能在校正曲线上产生正的截距，尤其是在静态采样条件下，这为气味分析设定了实际的检测极限。

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