IEECAS OpenIR  > 黄土与第四纪地质国家重点实验室(2010~)
Arsenic in Chinese coals: Distribution, modes of occurrence, and environmental effects
Kang, Y (Kang, Yu)[1,2]; Liu, GJ (Liu, Guijian)[1,2]; Chou, CL (Chou, Chen-Lin)[3]; Wong, MH (Wong, Ming H.)[4,5]; Zheng, LG (Zheng, Liugen)[1]; Ding, R (Ding, Rui)[1]
2011-12-15
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT
Volume412Pages:1-13
Subtype期刊论文
Abstract

Arsenic, one of the most hazardous elements occurring in coals, can be released to the environment during coal processing and combustion. Based on the available literature and published results obtained in our laboratory, the content, distribution and the modes of occurrence of As in Chinese coals, and its environmental and impacts are reviewed in this article. With the 4763 sets of data (from the literature) rearranged, the arithmetic mean As concentration of each province and weighted mean As concentration of the entire country (using the expected coal reserves as the weighting factor) were calculated. The weighted mean As concentration in Chinese coals is 3.18 mg/kg, with As concentration increasing from northern China to southern China. The As concentration in coal varies with coal-forming ages and coal ranks. Arsenic has several modes of occurrence in coals. According to results obtained by other studies and our own experiments, As is mainly associated with mineral matter (such as pyrite and other sulfide minerals) in coals, although a significant amount of arsenic is associated with organic matter. The accumulation of As in coal is controlled by many geological factors during coal-forming processes, including plant decomposition, sedimentary environments, and epigenetic hydrothermal activity. During the combustion of coal, As is released to the air, water, and soil, causing serious environmental pollution. More than 45% of the coal consumed in China is utilized by power plants, and it is estimated that nearly 522 tonnes, 21 tonnes and 252 tonnes of As are emitted into the atmosphere by industries, residential buildings and coal-fired power plants, respectively, every year.

KeywordArsenic Chinese coal Modes of occurrence Geologic factors Environmental impact
DOI10.1016/j.scitotenv.2011.10.026
Indexed BySCI
Language英语
Citation statistics
Cited Times:60[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/10302
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 Materials and Environment, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, Anhui 230026, China;
2.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, The Chinese Academy of Sciences, Xi'an, Shaanxi 710075, China;
3.Illinois State Geological Survey (Emeritus), Champaign, IL 61820, USA;
4.Croucher Institute for Environmental Sciences, and Department of Biology, Hong Kong Baptist University, Kowloon Tong, Hong Kong, China
Recommended Citation
GB/T 7714
Kang, Y ,Liu, GJ ,Chou, CL ,et al. Arsenic in Chinese coals: Distribution, modes of occurrence, and environmental effects[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2011,412:1-13.
APA Kang, Y ,Liu, GJ ,Chou, CL ,Wong, MH ,Zheng, LG ,&Ding, R .(2011).Arsenic in Chinese coals: Distribution, modes of occurrence, and environmental effects.SCIENCE OF THE TOTAL ENVIRONMENT,412,1-13.
MLA Kang, Y ,et al."Arsenic in Chinese coals: Distribution, modes of occurrence, and environmental effects".SCIENCE OF THE TOTAL ENVIRONMENT 412(2011):1-13.
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