Method for Analyzing the Molecular and Carbon Isotope Composition of Volatile Hydrocarbons (C-1-C-9) in Natural Gas
文献类型：期刊论文
| 作者 | Cao, Chunhui; Li, Zhongping; Li, Liwu; Du, Li |
| 刊名 | JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY
 |
| 出版日期 | 2018 |
| 页码 | 9 |
| ISSN号 | 2090-8865 |
| DOI | 10.1155/2018/4512081 |
| 英文摘要 | Solid-phase microextraction (SPME) coupled with gas chromatography-isotope ratio mass spectrometry (GC-IRMS) has already been applied to collect and identify volatile light hydrocarbons in oil and source rocks. However, this technology has not yet been used to analyze volatile light hydrocarbons in dry gas (natural gas with C-1/C2+ > 95%). In this study, we developed a method to measure the molecular and carbon isotope composition of natural gas using divinylbenzene/carboxen/polydimethylsiloxane (DVB/CAR/PDMS) fiber. This fiber proved to be suitable for extracting C-1-C-9 hydrocarbons from natural gas without inducing carbon isotopic fractionation. Notably, the extraction coefficients of the analytes were not the same but rather increased with the increasing carbon number of the hydrocarbons. Nevertheless, we successfully identified 24 hydrocarbons from the in-lab standard natural gas, while also obtaining the carbon isotope composition of C-1 to C-9 hydrocarbons with satisfying repeatability. The relative standard deviation (RSD) of the molecular composition data was in the range of 0.06-0.74%, with the RSDs of the carbon isotope composition data not exceeding 1 parts per thousand. Finally, seven natural gas samples, collected from different sedimentary basins, were successfully analyzed and the stable carbon isotope compositions of C-1-C-9 hydrocarbons present in these were determined through this method. Overall, the new approach provides a simple but useful technique to obtain more geochemical information about the source and evolution of natural gas. |
| WOS关键词 | LIGHT-HYDROCARBONS ; CRUDE OILS ; GEOCHEMICAL CHARACTERISTICS ; ORIGIN ; PETROLEUM ; BASIN ; BIODEGRADATION |
| 资助项目 | National Science Foundation of China[41502143] ; Project of Gansu Key Lab[1309RTSA041] |
| WOS研究方向 | Chemistry ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000454803600001 |
| 出版者 | HINDAWI LTD |
| 资助机构 | National Science Foundation of China ; National Science Foundation of China ; Project of Gansu Key Lab ; Project of Gansu Key Lab ; National Science Foundation of China ; National Science Foundation of China ; Project of Gansu Key Lab ; Project of Gansu Key Lab ; National Science Foundation of China ; National Science Foundation of China ; Project of Gansu Key Lab ; Project of Gansu Key Lab ; National Science Foundation of China ; National Science Foundation of China ; Project of Gansu Key Lab ; Project of Gansu Key Lab |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/90230]  |
| 专题 | 地质与地球物理研究所_兰州油气中心 |
| 通讯作者 | Cao, Chunhui |
| 作者单位 | Chinese Acad Sci, Inst Geol & Geophys, Gansu Prov Key Lab Petr Resources Res, Key Lab Petr Resources, Lanzhou 730000, Gansu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cao, Chunhui,Li, Zhongping,Li, Liwu,et al. Method for Analyzing the Molecular and Carbon Isotope Composition of Volatile Hydrocarbons (C-1-C-9) in Natural Gas[J]. JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY,2018:9. |
| APA | Cao, Chunhui,Li, Zhongping,Li, Liwu,&Du, Li.(2018).Method for Analyzing the Molecular and Carbon Isotope Composition of Volatile Hydrocarbons (C-1-C-9) in Natural Gas.JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY,9. |
| MLA | Cao, Chunhui,et al."Method for Analyzing the Molecular and Carbon Isotope Composition of Volatile Hydrocarbons (C-1-C-9) in Natural Gas".JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY (2018):9. |
入库方式： OAI收割
来源：地质与地球物理研究所
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