全二维气相色谱-飞行时间质谱联用技术分析重馏分油中芳烃组成  

Characterization of aromatic hydrocarbons in heavy gas oil using comprehensive two-dimensional gas chromatography coupled to time-of-flight mass spectrometry

作　　者：郭琨[1] 周建[1] 刘泽龙[1] 

机构地区：[1]石油化工科学研究院,北京100083

出　　处：《色谱》2012年第2期128-134,共7页Chinese Journal of Chromatography

基　　金：国家重点基础研究发展计划"973"项目(2006CB202501)

摘　　要：通过对升温速度、二维补偿温度、调制周期等关键实验参数的优化,建立了全二维气相色谱-飞行时间质谱(GC×GC-TOF MS)分析重馏分油中芳烃组分的方法,得到了重馏分油芳烃组分按环数分布的二维点阵图。根据谱库检索、标准化合物对照及文献报道,对重馏分油芳烃组分中菲、甲基菲及芘、苯并蒽等常见多环芳烃(PAH)进行了准确定性,并将该方法应用到重馏分油加氢处理工艺研究中,对菲、芘的加氢处理产物进行了定性分析。该研究为重馏分油芳烃组分的准确定性提供了新的技术手段,为加深对油品加氢规律的认识提供了技术支持。全二维气相色谱与普通一维色谱对比,在重馏分油的芳烃组分分析上体现了极大优势。An analytical method for separating and identifying the aromatic hydrocarbons in heavy gas oil using comprehensive two-dimensional gas chromatography（GC×GC） coupled to time-of-flight mass spectrometry（TOF MS） was established.The two-dimensional distribution by ring number of the aromatic hydrocarbons was obtained.Besides phenanthrene and methylphenanthrene,many other polycyclic aromatic hydrocarbons（PAHs） such as pyrene and benzo[a]anthracene were identified by using the retention times,standard mass spectra or literature reports.The method was successfully applied to the hydrotreating process of heavy gas oil and the hydrotreated products of phenanthrene,pyrene were identified.This method provided technical support for the characterization of aromatic hydrocarbons in heavy gas oil and the investigation of hydrogenation mechanism of polycyclic aromatic hydrocarbons.Compared with the conventional method,gas chromatography coupled to mass spectrometry（GC-MS）,the GC×GC-TOF MS method illustrated the obvious advantages for heavy gas oil analysis.

关 键 词：全二维气相色谱(GC×GC) 飞行时间质谱(TOFMS) 芳烃组分 重馏分油 

分 类 号：O658[理学—分析化学]