Mercury-binding forms in coals and their geological provenances in coals of different types
Wu, D (Wu, Dun)[ 1,2 ]; Liu, GJ (Liu, Guijian)[ 1,2 ]; Sun, RY (Sun, Ruoyu)[ 1 ]; Chen, SC (Chen, Shancheng)[ 1 ]
2014-06-15
发表期刊ENVIRONMENTAL EARTH SCIENCES
卷号71期号:12页码:4989-4995
文章类型期刊论文
摘要

Mercury (Hg) is an element of environmental and geological significance. Quantification of different Hg-binding forms is crucial to understand geological Hg provenances and associated geochemical processes during coal formation. In this study, seven coal samples were selected, according to coal rank (i.e., middle volatile bituminous, C-3; low volatile bituminous, C-2; anthracite, C-1), chemical anomalies (high S coal, IBC-105; high Cl coal, C22650) and sampling environment (fresh coal, LH; weathered coal LHW), to determine their Hg-binding forms using well-established sequential extraction procedures coupled with sink-float experiment. In the thermally metamorphosed samples C-1 and C-2, a comparative enrichment of total Hg relative to C-3 is observed. Silicate- and organic-bound Hg are the dominant Hg-binding forms in C-1, suggesting possible Hg sources from magma silicate and secondary Hg enrichment by adsorption. Sulfide- and organic-bound Hg are the most abundant Hg-binding forms in IBC-105, whereas only organic-bound Hg dominates in CC22650. Weathering processes are suggested to transform the abundant sulfide-bound Hg in LH to silicate- and organic-bound Hg in its weathering product LHW.

关键词Mercury Coal Mercury-binding Forms Sequential Extraction Procedure
DOI10.1007/s12665-013-2889-7
收录类别SCI ; EI
语种英语
引用统计
被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/9816
专题黄土与第四纪地质国家重点实验室(2010~)
通讯作者Liu, GJ (Liu, Guijian)[ 1,2 ]
作者单位1.CAS Key Laboratory of Crust-Mantle Materialsand Environment, School of Earth and Space Sciences,University of Science and Technology of China,Hefei 230026, Anhui, China;
2.State Key Laboratory of Loess and Quaternary Geology,Institute of Earth Environment, The Chinese Academyof Sciences, Xi’an 710075, Shaanxi, China
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GB/T 7714
Wu, D ,Liu, GJ ,Sun, RY ,et al. Mercury-binding forms in coals and their geological provenances in coals of different types[J]. ENVIRONMENTAL EARTH SCIENCES,2014,71(12):4989-4995.
APA Wu, D ,Liu, GJ ,Sun, RY ,&Chen, SC .(2014).Mercury-binding forms in coals and their geological provenances in coals of different types.ENVIRONMENTAL EARTH SCIENCES,71(12),4989-4995.
MLA Wu, D ,et al."Mercury-binding forms in coals and their geological provenances in coals of different types".ENVIRONMENTAL EARTH SCIENCES 71.12(2014):4989-4995.
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