少量/微量烃类气体的收集、定量分析及碳同位素分析方法

基金项目: 国家自然科学基金(49972040)

COLLECTION, QUANTITATIVE ANALYSIS AND CARBON ISOTOPIC ANALYSIS METHODS OF MINOR/TRACE HYDROCARBON GASES

State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, Guangdong 510640, China

摘要: 在生烃动力学的研究中,需要对热模拟产生的少量或微量的烃类气体进行定性、定量分析及单体烃碳同位素分析。金管中的气体经托普勒汞泵收集定量后送入气相色谱仪进行成分分析,剩余的气体经收集、转移后进行碳同位素分析。文中介绍了系统的详细结构、工作原理,并讨论了影响分析精度的几个因素。
- 烃 /
- 碳同位素 /
- 气相色谱 /
- 气体分析
Abstract: In the study of hydrocarbon-generation dynamics, it is needed to make quantitative analysis, qualitative anakysis and simple-hydrocarbon carbon-isotopic analysis on minor or trace hydrocarbon gases generated from thermal simulation.The gases in gold tubes were collected and quantified by a Toepler mercury pump, and then were sent into a gas chromatogaph to make compositional analysis.The residual gases were collected and transferred so as to make carbon isotopic analysis.In this paper, the detailed structure and operating mechanism of the system were introduced, and several factors affecting analysis precision were discussed.
- hydrocarbon /
- carbon isotope /
- gas chromatography /
- gas analysis

[1]	UngegereP,Pelet R. Extrapolation of the kinetics of oil and gas formation from laboratory experiments to sedimentary basins[J].Nature,1987,327,7:52-54.
[2]	Tang Y,Zhang E,Hill R,et al. Modeling gas generation from coals and kerogens[J].ABS-PAP-ACS,1998,215(Part 1):10-15.
[3]	Behar F, Tang Y, Liu J. Comparison of rate constant for some molecular tracers generated during artificial maturation of kerogens: influence of kerogen types[J].Organic Geochemistry 1997,26:281-287.
[4]	刘金钟,唐永春.石油中正构烷烃的生成动力学研究[J].科学通报,1997,42:303-305.
[5]	Liu Jinzhong, Tang Yongchun. Kinetics of early methane generation from Green River Shale[J].Chinese Science Bulletin, 1998,43:1908-1912.
[6]	Tang Y, Perry J K, Jeden P D, et al. Mathematical modeling of stable carbon isotope ratios in natural gases[J]. Geochemica et Cosmochimica Acta, 2000,64(15):2673-2687.
[7]	耿安松,熊永强.应用 GC-IRMS 技术测定气源岩热解产物中轻烃的碳同位素组成[J].科学通报,2000,45(增刊):2695-2698.
[8]	邵波,文启彬,张同伟.GC/C/MS碳同位素在线分析及济阳凹陷天然气碳同位素研究[J].科学通报,1996,41(17):1597-1600.
[9]	Baylis S A, Hall K, Jumeau E J. The analysis of C₁-C₅ components of natural gas samples using gas chromatography-combustion-isotope ratio mass spectrometry[J]. Organic Geochemistry, 1994, 21(6-7):777-785.