Enrichment and distribution of trace elements in Padhrar, Thar and Kotli coals from Pakistan: Comparison to coals from China with an emphasis on the elements distribution
Munir, Mehr Ahmed Mujtaba1,2; Liu, Guijian1,2; Yousaf, Balal1,2; Ali, Muhammad Ubaid1; Abbas, Qumber1
2018-02-01
发表期刊JOURNAL OF GEOCHEMICAL EXPLORATION
卷号185期号:2018页码:153-169
文章类型Article
摘要This paper reports the mineralogical and geochemical compositions of the Padhrar (salt-range), Thar (Block Nos. 3 and 5) and Kotli coals. The coal investigated in this study is lignite to sub-bituminous coal, with a broad range of ash yields, volatile matter content and sulfur contents. The mineralogical characteristic, major and trace elements were determined by X-ray diffraction, inductively coupled plasma-atomic emission spectrometry and inductively coupled plasma-mass spectrometry, respectively. The mineral assemblages, sulfur contents, ash yields, and (CaO + MgO + Fe2O3)/(SiO2+ Al2O3) ratio varied significantly in the coal, which is attributed mainly to variation in the depositional environment. Pyritic sulfur is the main form of sulfur in the coals from Padhrar, Kotli and Thar coalfield. The minerals in the studied coals are dominated by quartz, pyrite, kaolinite, illite, along with calcite, feldspar, siderite, montmorillonite and gypsum. Sixteen trace elements, including Li, Be, B, Ti, Sc, V, Cr, Mn, Co, Ni, Cu, Zn, As, Rb, Sr, and Ba and five major elements P, Ca, Al, Fe, and Si, were investigated in this study. The trace element concentrations show variety within the coal seams in the Thar coals and the affinities vary among locations. The concentration of Sr, Ti, Zn, Li, Ni, Cu, Sc, As, Be, and B in the present study are within the range of average Chinese coal values, with the exception of V, Cr, Fe, P, and Rb. On the other hand, compared with world coals, the studied coals have higher contents of B, Cr, Li, Fe, V, Rb, P, and Sc. Based on statistical analyses, most of the trace elements, show an affinity to ash yield and possible association with pyrite, kaolinite, and calcite.
关键词Coals Compositional Characteristics Mineral Matter Depositional Behaviors Environmental Geochemistry
WOS标题词Science & Technology ; Physical Sciences
DOI10.1016/j.gexplo.2017.11.009
关键词[WOS]LATE PERMIAN COALS ; HUMAN HEALTH-RISKS ; SOUTHWESTERN CHINA ; INNER-MONGOLIA ; MINERAL MATTER ; NORTH CHINA ; TECHNOLOGICAL PROPERTIES ; CANAKKALE-TURKEY ; GUIZHOU PROVINCE ; SHANXI PROVINCE
收录类别SCI
语种英语
WOS研究方向Geochemistry & Geophysics
WOS类目Geochemistry & Geophysics
WOS记录号WOS:000419250900013
引用统计
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/5243
专题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, Shaanxi, Peoples R China
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Munir, Mehr Ahmed Mujtaba,Liu, Guijian,Yousaf, Balal,et al. Enrichment and distribution of trace elements in Padhrar, Thar and Kotli coals from Pakistan: Comparison to coals from China with an emphasis on the elements distribution[J]. JOURNAL OF GEOCHEMICAL EXPLORATION,2018,185(2018):153-169.
APA Munir, Mehr Ahmed Mujtaba,Liu, Guijian,Yousaf, Balal,Ali, Muhammad Ubaid,&Abbas, Qumber.(2018).Enrichment and distribution of trace elements in Padhrar, Thar and Kotli coals from Pakistan: Comparison to coals from China with an emphasis on the elements distribution.JOURNAL OF GEOCHEMICAL EXPLORATION,185(2018),153-169.
MLA Munir, Mehr Ahmed Mujtaba,et al."Enrichment and distribution of trace elements in Padhrar, Thar and Kotli coals from Pakistan: Comparison to coals from China with an emphasis on the elements distribution".JOURNAL OF GEOCHEMICAL EXPLORATION 185.2018(2018):153-169.
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