Development of new method of delta C-13 measurement for trace hydrocarbons in natural gas using solid phase micro-extraction coupled to gas chromatography isotope ratio mass spectrometry

doi:10.1016/j.chroma.2014.10.089

	Development of new method of delta C-13 measurement for trace hydrocarbons in natural gas using solid phase micro-extraction coupled to gas chromatography isotope ratio mass spectrometry
	Li, Zhongping 1,2,3; Wang, Xibin 1; Li, Liwu 1; Zhang, Mingjie 2,3; Tao, Mingxin 4; Xing, Lantian 1; Cao, Chunhui 1; Xia, Yanqing 1
刊名	JOURNAL OF CHROMATOGRAPHY A
	2014-12-12
卷号	1372 页码:228-235
关键词	Carbon isotope Solid-phase micro extraction Gas chromatography Isotope ratio mass spectrometry Trace hydrocarbons Natural gas
ISSN号	0021-9673
DOI	10.1016/j.chroma.2014.10.089
文献子类	Article
英文摘要	Compound specific isotope analysis (CSIA) of normal-level hydrocarbons (C-1-C-4) in natural gas is often successfully used in natural gas origin identification and classification, but little progress so far has been made for trace level hydrocarbons (C-5-C-14) in natural gas. In this study, we developed a method for rapid analysis of carbon isotopic ratios for trace hydrocarbons in natural gas samples. This method can be described as a combined approach characterized by solid phase micro-extraction (SPME) technique coupled to gas chromatography isotope ratio mass spectrometry (GC/IRMS). In this study, the CAR-PDMS fiber was chosen as the SPME adsorptive material after comparative experiments with other four fibers, and the parameters, including equilibration time, extraction temperature and desorption time, for efficient extraction of trace hydrocarbons were systematically optimized. The results showed the carbon isotopic fractionation was not observed as a function of equilibration time and extraction temperature. And the delta C-13 signatures determined by SPME-GC/IRMS were in good agreement with the known delta C-13 values of C-5-C-14 measured by GC-IRMS, and the accuracy is generally within +/- 0.5 parts per thousand. Five natural gas samples were analyzed using this method, and the delta C-13 values for C-5-C-14 components were obtained with satisfied repeatability. The SPME-GC/IRMS approach fitted with CAR-PDMS fiber is well suited for the preconcentration of trace hydrocarbons and provides so far the most reliable carbon isotopic analysis for trace compounds in natural gas. Published by Elsevier B.V.
WOS关键词	LIGHT-HYDROCARBONS ; MICROEXTRACTION ; CHINA ; BASIN ; PYROLYSIS ; VOLATILES ; FIBERS ; ORIGIN ; OILS
WOS研究方向	Biochemistry & Molecular Biology ; Chemistry
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000347020900025
资助机构	National Basic Research Program (973 Program)(2012CB214701) ; National Basic Research Program (973 Program)(2012CB214701) ; National Science Foundation of China(41272145 ; National Science Foundation of China(41272145 ; Key Laboratory Project of Gansu Province(1309RTSA041) ; Key Laboratory Project of Gansu Province(1309RTSA041) ; 41172107) ; 41172107) ; National Basic Research Program (973 Program)(2012CB214701) ; National Basic Research Program (973 Program)(2012CB214701) ; National Science Foundation of China(41272145 ; National Science Foundation of China(41272145 ; Key Laboratory Project of Gansu Province(1309RTSA041) ; Key Laboratory Project of Gansu Province(1309RTSA041) ; 41172107) ; 41172107) ; National Basic Research Program (973 Program)(2012CB214701) ; National Basic Research Program (973 Program)(2012CB214701) ; National Science Foundation of China(41272145 ; National Science Foundation of China(41272145 ; Key Laboratory Project of Gansu Province(1309RTSA041) ; Key Laboratory Project of Gansu Province(1309RTSA041) ; 41172107) ; 41172107) ; National Basic Research Program (973 Program)(2012CB214701) ; National Basic Research Program (973 Program)(2012CB214701) ; National Science Foundation of China(41272145 ; National Science Foundation of China(41272145 ; Key Laboratory Project of Gansu Province(1309RTSA041) ; Key Laboratory Project of Gansu Province(1309RTSA041) ; 41172107) ; 41172107)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/86718]
专题	中国科学院地质与地球物理研究所
通讯作者	Li, Zhongping
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Gansu Prov Key Lab Petr Resources Res, Lanzhou 730000, Peoples R China 2.Lanzhou Univ, Sch Earth Sci, Lanzhou 730000, Peoples R China 3.Lanzhou Univ, Gansu Key Lab Mineral Resources Western China, Lanzhou 730000, Peoples R China 4.Beijing Normal Univ, Coll Resources Sci & Technol, Beijing 100875, Peoples R China
推荐引用方式 GB/T 7714	Li, Zhongping,Wang, Xibin,Li, Liwu,et al. Development of new method of delta C-13 measurement for trace hydrocarbons in natural gas using solid phase micro-extraction coupled to gas chromatography isotope ratio mass spectrometry[J]. JOURNAL OF CHROMATOGRAPHY A,2014,1372:228-235.
APA	Li, Zhongping.,Wang, Xibin.,Li, Liwu.,Zhang, Mingjie.,Tao, Mingxin.,...&Xia, Yanqing.(2014).Development of new method of delta C-13 measurement for trace hydrocarbons in natural gas using solid phase micro-extraction coupled to gas chromatography isotope ratio mass spectrometry.JOURNAL OF CHROMATOGRAPHY A,1372,228-235.
MLA	Li, Zhongping,et al."Development of new method of delta C-13 measurement for trace hydrocarbons in natural gas using solid phase micro-extraction coupled to gas chromatography isotope ratio mass spectrometry".JOURNAL OF CHROMATOGRAPHY A 1372(2014):228-235.