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A Refinement of Nitrogen Isotope Analysis of Coal Using Elemental Analyzer/Isotope Ratio Mass Spectrometry and the Carbon and Nitrogen Isotope Compositions of Coals Imported in China

文献类型：期刊论文

作者Feng, Lianjun1,2; Li, Hongwei1,2; Yan, Detian3
刊名ACS OMEGA
出版日期2020-04-07
卷号5期号:13页码:7636-7640
ISSN号2470-1343
DOI10.1021/acsomega.0c00488
英文摘要The ability to accurately analyze nitrogen (N) isotopes of coal is important for evaluating its contribution to NOX emissions to the atmosphere via coal combustion. Although an elemental analyzer/isotope ratio mass spectrometer is highly efficient for analyzing the N isotopes of coal, it requires large amounts of organic matter (>3 mg) to produce enough N-2 to enable N isotope measurements due to the high organic carbon contents of coal with relatively low N contents. Therefore, to completely oxidize the organic matter, more oxidant matter is required to enhance coal combustion in a reactor tube in an elemental analyzer through injecting O-2 during the combustion process. One reference material (RM) (GBW11104) was used to determine the effect of amounts of O-2 on the accuracy of nitrogen isotope values obtained. Our results show that small amounts of O-2 injected into the EA resulted in incomplete coal combustion, which yielded a lower N content and more positive N isotope ratio for RM (GBW11104) than those obtained by complete combustion. Thus, to ensure the complete combustion of coal, large O-2 injection amounts are required. The refined method was applied to provide the N isotope values of coals imported from Southeast Asia, Russia, and Australia. Combined with the carbon isotope values, the imported coals from three coal-producing regions (Southeast Asia, Russia, and Australia) display distinct characteristics.
WOS关键词ORGANIC NITROGEN ; DELTA-N-15 ; DELTA-C-13 ; FUNCTIONALITIES ; SAMPLES ; ORIGIN ; BED
资助项目National Key R&D Program of China[2018YFF0215400] ; Instrument Function Developing Project of the Chinese Academy of Sciences[IGG201603] ; CAS Key Technology Talent Program ; Key Research Program of the Institute of Geology & Geophysics, CAS[IGGCAS-201905]
WOS研究方向Chemistry
语种英语
WOS记录号WOS:000525754500064
出版者AMER CHEMICAL SOC
资助机构National Key R&D Program of China ; National Key R&D Program of China ; Instrument Function Developing Project of the Chinese Academy of Sciences ; Instrument Function Developing Project of the Chinese Academy of Sciences ; CAS Key Technology Talent Program ; CAS Key Technology Talent Program ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; National Key R&D Program of China ; National Key R&D Program of China ; Instrument Function Developing Project of the Chinese Academy of Sciences ; Instrument Function Developing Project of the Chinese Academy of Sciences ; CAS Key Technology Talent Program ; CAS Key Technology Talent Program ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; National Key R&D Program of China ; National Key R&D Program of China ; Instrument Function Developing Project of the Chinese Academy of Sciences ; Instrument Function Developing Project of the Chinese Academy of Sciences ; CAS Key Technology Talent Program ; CAS Key Technology Talent Program ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; National Key R&D Program of China ; National Key R&D Program of China ; Instrument Function Developing Project of the Chinese Academy of Sciences ; Instrument Function Developing Project of the Chinese Academy of Sciences ; CAS Key Technology Talent Program ; CAS Key Technology Talent Program ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS
源URL[http://ir.iggcas.ac.cn/handle/132A11/95547]  
专题地质与地球物理研究所_中国科学院矿产资源研究重点实验室
通讯作者Feng, Lianjun
作者单位1.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Key Lab Mineral Resources, Inst Geol & Geophys, Beijing 100029, Peoples R China
3.China Univ Geosci, Minist Educ, Key Lab Tecton & Petr Resources, Wuhan 430074, Peoples R China
推荐引用方式
GB/T 7714		 Feng, Lianjun,Li, Hongwei,Yan, Detian. A Refinement of Nitrogen Isotope Analysis of Coal Using Elemental Analyzer/Isotope Ratio Mass Spectrometry and the Carbon and Nitrogen Isotope Compositions of Coals Imported in China[J]. ACS OMEGA,2020,5(13):7636-7640.
APA Feng, Lianjun,Li, Hongwei,&Yan, Detian.(2020).A Refinement of Nitrogen Isotope Analysis of Coal Using Elemental Analyzer/Isotope Ratio Mass Spectrometry and the Carbon and Nitrogen Isotope Compositions of Coals Imported in China.ACS OMEGA,5(13),7636-7640.
MLA Feng, Lianjun,et al."A Refinement of Nitrogen Isotope Analysis of Coal Using Elemental Analyzer/Isotope Ratio Mass Spectrometry and the Carbon and Nitrogen Isotope Compositions of Coals Imported in China".ACS OMEGA 5.13(2020):7636-7640.

入库方式： OAI收割

来源：地质与地球物理研究所

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