引用本文:杨佰娟,郑立,张魁英,崔志松,王小如,黎先春. TLC/FID分析原油SARA组成方法研究[J]. 石油与天然气化工, 2011, 40(2): 201-203,222,101.
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TLC/FID分析原油SARA组成方法研究
杨佰娟1, 郑立1, 张魁英1,2, 崔志松, 王小如, 黎先春
1.国家海洋局第一海洋研究所海洋生态研究中心;2.青岛科技大学化学与分子工程学院
摘要:
以渤海原油为研究对象,建立原油棒状薄层色谱/氢火焰离子化检测器(TLC/FID)族组分分析方法,对原油的四个族组分(饱和烃、芳烃、胶质、沥青,SARA)进行了分析,并对其影响因素展开次数、点样量、展开剂的干燥方式进行了优化,在优化所得条件下,方法的精密度RSD值为3.54%,方法重现性RSD值为3.23%。与文献报道方法相比,本文建立的方法,可将原油中的胶质和沥青两个组分分开,更能全面反应原油的族组成成分,具有分析速度快、有机溶剂用量少、操作简单等特点。最后将建立的方法应用到不同来源的原油中,结果令人满意。
关键词:  SARA族组分  原油  TLC/FID分析
DOI：
分类号:TE81
基金项目:海洋公益性行业科研专项(200705011);中国海监技术支撑体系项目;国家海洋局青年海洋科学基金(2010518);国家海洋局近岸海域生态环境重点实验室资助项目(201008,201009);海洋环境保护及节能减排专项
Study on SARA Composition of Crude Oil by TLC/FID
Yang Baijuan1, Zheng Li1, Zhang Kuiying1,2
1.Research Center for Marine Ecology, the First Institute of Oceanography,SOA, Qingdao 266061, Shandong, China;2.College of Chemistry and Molecular Engineering,Qingdao University of Science and Technology,Qingdao 266042, Shandong, China
Abstract:
TLC/FID has been used as a rapid and inexpensive way to determine SARA fractions (saturate, aromatic, resin, asphaltene) in crude oils. In this study, SARA analysis was accomplished on an IATROSCAN MK—6s system using silica gel rods. The oil samples from Bohai sea were applied on thin rod of SG which was then separated in typical TLC procedures. The effects of various operational parameters such as times of separation, TLC/FID Chromarod Drying and TLC/FID Chromarod Mass Loading were systematically studied. The precisions of four peak area measurements were found to be better than 3.54%(R. S. D. , n=5). The reproducibility (R. S. D.) of the proposed method, on the basis of peak areas forfive replicate injections, was 3.23%. The TLC—FID technique can produce quantitative measurements of each of the four petroleum fractions which has proven to be a rapid, convenient, and reliable semi—quantitative characterization technique for petroleum compounds. At last, crude oils from different field samples have been analyzed by TLC/FID.
Key words:  SARA composition  crude oil  TLC/FID analysis