喷气燃料裂解产物中芳烃的全二维气相色谱-质谱分析

发布时间：2018-08-17 15:39

【摘要】：采用全二维气相色谱-质谱联用仪(GC×GC-MS),通过优化程序升温和调制周期,建立了喷气燃料裂解产物中芳烃的定性定量分析方法。该方法对多环芳烃(PAH)同分异构体具有良好的分离能力。利用MS检测器谱库检索结果、芳烃标准品及相关的文献报道,对喷气燃料裂解产物中常见的单环芳烃、二环芳烃、三环芳烃及四环芳烃等共27种芳烃进行了准确定性,并利用外标GC×GC-FID法对其进行定量。定量结果表明,芳烃含量均随着裂解产气率的增加而增大,当裂解产气率达到22%时,二环芳烃开始产生,且其含量随着裂解产气率的增加呈指数形式增加。该方法与传统的气相色谱-质谱相比,具有更好的分离及定性能力,可应用于复杂样品的分离及其定性定量分析。
[Abstract]:A method for qualitative and quantitative analysis of aromatic hydrocarbons in pyrolysis products of jet fuel was established by means of a full two-dimensional gas chromatography-mass spectrometer (GC 脳 GC-MS) and optimization of temperature programmed and modulation periods. This method has good separation ability for (PAH) isomers of polycyclic aromatic hydrocarbons (PAHs). By using MS detector spectral library search results, aromatics standard products and related literature reports, 27 aromatics, such as monocyclic aromatic hydrocarbons, dicyclic aromatic hydrocarbons, tricyclic aromatic hydrocarbons and tetracyclic aromatic hydrocarbons, which are common in pyrolysis products of jet fuel, were accurately identified. The method of external standard GC 脳 GC-FID was used to quantify it. The quantitative results showed that the aromatics content increased with the increase of pyrolysis gas production rate. When the pyrolysis gas production rate reached 22, the dicyclic aromatics began to produce, and its content increased exponentially with the increase of pyrolysis gas production rate. Compared with the traditional gas chromatography-mass spectrometry, this method has better separation and qualitative analysis ability, and can be applied to the separation and qualitative analysis of complex samples.
【作者单位】：天津大学绿色合成与转化教育部重点实验室;
【基金】：国家自然科学基金项目(U1462119,2476168)~~
【分类号】：O657.63;TE626.23

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