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Development of new method for D/H ratio measurements for volatile hydrocarbons of crude oils using solid phase micro-extraction (SPME) coupled to gas chromatography isotope ratio mass spectrometry (GC-IRMS)
Li, Zhongping1,2,3,4; Li, Liwu3,4; Xing, Lantian3,4; Liu, Yan3,4; Zhang, Mingjie1,2; Wang, Xibin3,4; Cao, Chunhui3,4; Wang, Zuodong3,4
2018
Source PublicationMARINE AND PETROLEUM GEOLOGY
ISSN0264-8172
Volume89Pages:232-241
SubtypeArticle
AbstractIn compound-specific isotope analysis (CSIA), one major challenge is the effective sample treatment and the isolation of sufficient amount of analytes for accurate measurements for isotope ratios. The hydrogen isotope ratio (D/H) of normal level hydrocarbons in crude oils has been successfully used as an isotopic tracer in oil-oil and oil-gas correlations, but little progress so far has been made for small size hydrocarbons (C-6-C-15). In this paper, we presented a novel method for sample treatment and achieved the D/H ratio analysis for these particular compounds. The method can be characterized as an efficient approach featured by SPME (solid phase micro-extraction) coupled to GC-IRMS (gas chromatography-isotope ratio mass spectrometry). In this investigation, the CAR/DVB/PDMS fiber was evaluated and used as the absorptive material, and the operating conditions, including the extraction time (0.1 min-150 min) and the extraction temperature (-30 degrees C-140 degrees C), which may affect the adsorption amount, were carefully evaluated, and it was found that the adsorption yields varied considerably not only with the operating conditions but also with the molecular size. In addition, the possible hydrogen isotopic fractionation, which may exert strong influence on D/H ratios, were also discussed, it was found that the hydrogen isotopic fractionation were not observed in the extraction process, and the D/H ratios obtained via SPME-GC/IRMS were in good agreement with the EA-IRMS. Notably, the difference between the two approaches was generally within the expected uncertainties from 0.8 parts per thousand to 4.2 parts per thousand, indicating the method is high efficient for volatile hydrocarbon enrichments and the D/H measurements. To assess the validity of the established method, one typical crude oil sample was analyzed, and the D/H ratio results displayed considerable large variation, enough to distinguished between different compounds, showing the established method is well suited for trace hydrocarbon enrichment, and provides so far the most efficient and reliable means for D/H analysis. (C) 2017 Elsevier Ltd. All rights reserved.
KeywordSolid Phase Microextraction (Spme) Gas Chromatography(Gc) Hydrogen Isotope Ratio Isotope Ratio Mass-spectrometry(Irms) Trace Hydrocarbons Crude Oils
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1016/j.marpetgeo.2017.01.008
Funding OrganizationNational Science Foundation(41272145 ; National Science Foundation(41272145 ; West Light Foundation of Chinese Academy of Sciences ; West Light Foundation of Chinese Academy of Sciences ; 41572136) ; 41572136) ; National Science Foundation(41272145 ; National Science Foundation(41272145 ; West Light Foundation of Chinese Academy of Sciences ; West Light Foundation of Chinese Academy of Sciences ; 41572136) ; 41572136) ; National Science Foundation(41272145 ; National Science Foundation(41272145 ; West Light Foundation of Chinese Academy of Sciences ; West Light Foundation of Chinese Academy of Sciences ; 41572136) ; 41572136) ; National Science Foundation(41272145 ; National Science Foundation(41272145 ; West Light Foundation of Chinese Academy of Sciences ; West Light Foundation of Chinese Academy of Sciences ; 41572136) ; 41572136)
WOS KeywordN-ALKANES ; STABLE CARBON ; PETROLEUM CONTAMINATION ; FATTY-ACID ; MICROEXTRACTION ; SAMPLES ; SEDIMENTS ; BASIN ; MS ; DELTA-C-13
Indexed BySCI
Language英语
Funding OrganizationNational Science Foundation(41272145 ; National Science Foundation(41272145 ; West Light Foundation of Chinese Academy of Sciences ; West Light Foundation of Chinese Academy of Sciences ; 41572136) ; 41572136) ; National Science Foundation(41272145 ; National Science Foundation(41272145 ; West Light Foundation of Chinese Academy of Sciences ; West Light Foundation of Chinese Academy of Sciences ; 41572136) ; 41572136) ; National Science Foundation(41272145 ; National Science Foundation(41272145 ; West Light Foundation of Chinese Academy of Sciences ; West Light Foundation of Chinese Academy of Sciences ; 41572136) ; 41572136) ; National Science Foundation(41272145 ; National Science Foundation(41272145 ; West Light Foundation of Chinese Academy of Sciences ; West Light Foundation of Chinese Academy of Sciences ; 41572136) ; 41572136)
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000418976800023
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/93140
Collection兰州油气中心
Corresponding AuthorLi, Zhongping
Affiliation1.Lanzhou Univ, Sch Earth Sci, Lanzhou 730000, Gansu, Peoples R China
2.Lanzhou Univ, Gansu Key Lab Mineral Resources Western China, Lanzhou 730000, Gansu, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Lanzhou 730000, Gansu, Peoples R China
4.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Res Ctr Oil & Gas Resources, Lanzhou 730000, Gansu, Peoples R China
Recommended Citation
GB/T 7714
Li, Zhongping,Li, Liwu,Xing, Lantian,et al. Development of new method for D/H ratio measurements for volatile hydrocarbons of crude oils using solid phase micro-extraction (SPME) coupled to gas chromatography isotope ratio mass spectrometry (GC-IRMS)[J]. MARINE AND PETROLEUM GEOLOGY,2018,89:232-241.
APA Li, Zhongping.,Li, Liwu.,Xing, Lantian.,Liu, Yan.,Zhang, Mingjie.,...&Wang, Zuodong.(2018).Development of new method for D/H ratio measurements for volatile hydrocarbons of crude oils using solid phase micro-extraction (SPME) coupled to gas chromatography isotope ratio mass spectrometry (GC-IRMS).MARINE AND PETROLEUM GEOLOGY,89,232-241.
MLA Li, Zhongping,et al."Development of new method for D/H ratio measurements for volatile hydrocarbons of crude oils using solid phase micro-extraction (SPME) coupled to gas chromatography isotope ratio mass spectrometry (GC-IRMS)".MARINE AND PETROLEUM GEOLOGY 89(2018):232-241.
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