Geochemical characteristics of n-alkanes and isoprenoids in coal seams from Zhuji coal mine, Huainan coalfield, China, and their relationship with coal-forming environment | |
Liu, Guijian1,2; Liu, Jingjing1; Wang, Shanshan1,2 | |
刊名 | ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
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2018-04-01 | |
卷号 | 25期号:10页码:9896-9903 |
关键词 | N-alkane Coals Organic Carbon Isotope Depositional Environments Zhuji Coalmine |
DOI | 10.1007/s11356-017-0970-6 |
文献子类 | Article |
英文摘要 | Ten coal seams in Upper Shihezi Formation, Lower Shihezi Formation, and Shanxi Formation from the Zhuji mine, Huainan coalfield, China, were analyzed for n-alkanes and isoprenoids (pristine and phytane) using gas chromatography-mass spectrometry (GC-MS), with an aim of reconstructing the coal-forming plants and depositional environments along with organic carbon isotope analyses. The total n-alkane concentrations ranged from 34.1 to 481 mg/kg. Values of organic carbon isotope (delta C-13(org)) ranged from -24.6 to -23.7 parts per thousand. The calorific value (Q(b,d)), maximum vitrinite reflectance (Ro(max)), proximate, and ultimate analysis were also determined but showed no correlation with n-alkane concentrations. Carbon Preference Index (CPI) values ranged from 0.945 to 1.30, suggesting no obvious odd/even predominance of n-alkane. The predominance of C-11 and C-17 n-alkanes implied that the coal may be deposited in the fresh and mildly brackish environment. According to the contrary changing trend of pristine/phytane (Pr/Ph) ratio and boron concentrations, Pr/Ph can be used as an indicator to reconstruct the marine transgression-regression in sedimentary environment of coal formation. The influence of marine transgression may lead to the enrichment of pyrite sulfur in the coal seam 4-2. C3 plants (-32 to -21 parts per thousand) and marine algae (-23 to -16 parts per thousand) were probably the main coal-forming plants in the studied coal seams. No correlation of the n-alkane concentration and redox condition of the depositional environment with organic carbon isotope composition were found. |
WOS关键词 | CARBON ISOTOPES ; ORGANIC-CARBON ; RIVER-DELTA ; DISTRIBUTIONS ; INDICATORS ; SEDIMENTS ; RATIOS ; PALEOCLIMATE ; BIOMARKERS ; NIGERIA |
WOS研究方向 | Environmental Sciences & Ecology |
语种 | 英语 |
WOS记录号 | WOS:000429561900064 |
内容类型 | 期刊论文 |
源URL | [http://ir.ieecas.cn/handle/361006/5216] ![]() |
专题 | 地球环境研究所_黄土与第四纪地质国家重点实验室(2010~) |
作者单位 | 1.Univ Sci & Technol China, Sch Earth & Space Sci, CAS Key Lab Crust Mantle Mat & Environm, Hefei 230026, Anhui, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710075, Shaanxi, Peoples R China |
推荐引用方式 GB/T 7714 | Liu, Guijian,Liu, Jingjing,Wang, Shanshan. Geochemical characteristics of n-alkanes and isoprenoids in coal seams from Zhuji coal mine, Huainan coalfield, China, and their relationship with coal-forming environment[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2018,25(10):9896-9903. |
APA | Liu, Guijian,Liu, Jingjing,&Wang, Shanshan.(2018).Geochemical characteristics of n-alkanes and isoprenoids in coal seams from Zhuji coal mine, Huainan coalfield, China, and their relationship with coal-forming environment.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,25(10),9896-9903. |
MLA | Liu, Guijian,et al."Geochemical characteristics of n-alkanes and isoprenoids in coal seams from Zhuji coal mine, Huainan coalfield, China, and their relationship with coal-forming environment".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 25.10(2018):9896-9903. |
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