Geochemistry of major and trace elements in Permian coal: with an emphasis on No. 8 coal seam of Zhuji coal mine, Huainan Coalfield, China
文献类型：期刊论文
| 作者 | Fan, Xiang2,3; Sun, Ruoyu2,3; Wu, Dun1,2,3; Liu, Guijian2,3; Chen, Shancheng1,2 |
| 刊名 | ENVIRONMENTAL EARTH SCIENCES
 |
| 出版日期 | 2016-03-01 |
| 卷号 | 75期号:6 |
| 关键词 | Element Geochemistry Depositional Environment Coal Toc Zhuji Coal Mine |
| DOI | 10.1007/s12665-016-5334-x |
| 文献子类 | Article |
| 英文摘要 | A better understanding on geochemistry of elements in coal has both environmental and geological implications. In this study, 53 coal samples were collected from No. 8 coal seam of the Zhuji coal mine, Huainan Coalfield. The concentrations of 49 elements, ash yield, and total organic compound (TOC), as well as mineralogical phases in coal were determined. As compared with Chinese, the USA, and world coals, Si, K, Se, Cd, Sn, Sb, and W in studied coal seam are higher, whereas Zn, As, and Lu are lower. The enrichment factor and concentration coefficient show that Se, Cd, Sn, Sb, and W are preferably enriched in studied coals. The enrichment of Se and Cd is probably attributed to their higher proportions of organic forms. Most major and trace elements tend to concentrate in either the upper or lower sections of coal seams, which suggest that depositional micro-environment was important in controlling elements migration and enrichment. The correlation analysis of elements with ash yield shows that the behavior of elements in coal follows the periodic change of metallic activity. The modes of occurrence of major and trace elements are elaborated by statistical methods. Silicon is mainly in form of montmorillonite or presents as free quartz. Iron is associated with chlorite, siderite, lepidocrocite, and other iron-bearing minerals. Ti shows obviously organic association. Three groups of elements are divided in accordance with the cluster dendrogram: Group 1 (Sc-HREE-Be-Y-V-Co-Cu-P-Sr-BSn-Se-Bi-TOC-S-Ba-As), Group 2 (LREE-Zn-Al-MnLi-Na-Th-Cr-Fe-Mg) and Group 3 (Ca-Mo-Si-W-AdTi-Pb-K). Many trace elements, including Li, Sc, V, Cr, Zn, Sr, La, Ce, Nd, Sm, Eu, Gd, Tb, Lu, Pb, Bi, and Th, correlate positively with Al, suggesting their occurrence mainly in clay such as kaolinite and chlorite. REE in the studied coalfield was primarily supplied by terrestrial clastics coming from North China Coal Basin. The differentiation of LREE and HREE is probably attributable to their different physicochemical characterisitcs and specific paleo-sedimentary environment. Various indexes (e.g., B content, Ash Index, C-value) and the existence of certain minerals suggest a reducing and anoxic sedimentary environment of coal swamp with a stable supply of terrigenous detrital materials in a moist environment. The origins of enriched elements are primarily derived from the source rock, sedimentary environment, and thermally contact metamorphism or possibly magmatic-hydrothermal fluids. |
| WOS关键词 | RARE-EARTH-ELEMENTS ; WESTERN GUIZHOU PROVINCE ; SOUTHWESTERN CHINA ; FLUORIDE POLLUTION ; HUAIBEI-COALFIELD ; XAFS SPECTROSCOPY ; HEALTH IMPACTS ; INNER-MONGOLIA ; ROASTED CORN ; MODES |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000372251000045 |
| 源URL | [http://ir.ieecas.cn/handle/361006/5800]  |
| 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.Anhui Prov Bur Coal Geol, Explorat Res Inst, Hefei 230088, Anhui, Peoples R China 2.Univ Sci & Technol China, Sch Earth & Space Sci, CAS Key Lab Crust Mantle Mat & Environm, Hefei 230026, Anhui, Peoples R China 3.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 | Fan, Xiang,Sun, Ruoyu,Wu, Dun,et al. Geochemistry of major and trace elements in Permian coal: with an emphasis on No. 8 coal seam of Zhuji coal mine, Huainan Coalfield, China[J]. ENVIRONMENTAL EARTH SCIENCES,2016,75(6). |
| APA | Fan, Xiang,Sun, Ruoyu,Wu, Dun,Liu, Guijian,&Chen, Shancheng.(2016).Geochemistry of major and trace elements in Permian coal: with an emphasis on No. 8 coal seam of Zhuji coal mine, Huainan Coalfield, China.ENVIRONMENTAL EARTH SCIENCES,75(6). |
| MLA | Fan, Xiang,et al."Geochemistry of major and trace elements in Permian coal: with an emphasis on No. 8 coal seam of Zhuji coal mine, Huainan Coalfield, China".ENVIRONMENTAL EARTH SCIENCES 75.6(2016). |
入库方式： OAI收割
来源：地球环境研究所
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