重馏分油烃类碳数分布的气相色谱-场电离飞行时间质谱测定  

Determination of Carbon Number Distribution of Vacuum Gas Oil by GC Field Ionization Time-of-Flight Mass Spectrometry

作　　者：祝馨怡[1] 刘泽龙[1] 田松柏[1] 刘颖荣[1] 

机构地区：[1]中国石化石油化工科学研究院,北京100083

出　　处：《石油学报（石油加工）》2012年第3期426-431,共6页Acta Petrolei Sinica(Petroleum Processing Section)

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

摘　　要：采用固相萃取技术将重馏分油分离为饱和烃和芳烃组分,并通过气相色谱-场电离飞行时间质谱联用仪(GC-FI TOF MS)分别进行分析。根据分子离子峰的精确相对分子质量可实现化合物的定性分析,根据分子离子峰强度进行定量分析,从而得到重馏分油饱和烃和芳烃的碳数分布信息。与现有的ASTM D 2786和D 3239烃类组成分析方法相比,本方法可提供更加详细的重馏分油烃类组成信息。Vacuum gas oil was separated into saturates and aromatics by solid phase extraction. The saturates and aromatics were then determined by gas chromatography-field ionization time of flight mass spectrometry （GC-FI TOF MS）. The carbon number distribution of saturates and aromatics could be obtained by the accurate relative molecule mass and the relative abundance of their molecular ions. Compared with ASTM D 2786 and D 3239, more detailed information could be obtained by this method.

关 键 词：气相色谱 场电离 飞行时间质谱(TOFMS) 固相萃取 重馏分油 烃类 碳数分布 

分 类 号：O657[理学—分析化学]