IEECAS OpenIR  > 黄土与第四纪地质国家重点实验室(2010~)
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
Source PublicationENVIRONMENTAL EARTH SCIENCES
Volume71Issue:12Pages:4989-4995
Subtype期刊论文
Abstract

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.

KeywordMercury Coal Mercury-binding Forms Sequential Extraction Procedure
DOI10.1007/s12665-013-2889-7
Indexed BySCI ; EI
Language英语
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Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/9816
Collection黄土与第四纪地质国家重点实验室(2010~)
Corresponding AuthorLiu, GJ (Liu, Guijian)[ 1,2 ]
Affiliation1.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
Recommended Citation
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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