地球科学进展

地球科学进展 ›› 2002, Vol. 17 ›› Issue (6): 840 -847. doi: 10.11867/j.issn.1001-8166.2002.06.0840

综述与评述 上一篇    下一篇

煤中有害物质及其对环境的影响研究进展
刘大锰,刘志华,李运勇   
  1. 中国地质大学能源系，北京 100083
  • 收稿日期:2002-03-21 修回日期:2002-07-10 出版日期:2002-12-20
  • 通讯作者: 刘大锰（1965-），男，湖南桃源人，教授，主要从事煤层气地质、煤地球化学及环境有机污染研究与教学工作.E-mail: dmliu@cugb.edu.cn E-mail:dmliu@cugb.edu.cn
  • 基金资助:

    地质行业青年基金资助项目“煤及燃烧产物中PAHs的分布赋存特征及对环境的影响”（编号：Qh979817）；教育部留学回国人员基金“燃煤环境中PAHs分布赋存规律及对环境的危害”（编号：2000-367）资助.

ADVANCES IN STUDIES OF HARMFUL SUBSTANCES IN COAL AND THEIR IMPACT ON THE ENVIRONMENT

LIU Da-meng，LIU Zhi-hua，LI Yun-yong   

  1. Department of Energy Resources, China University of Geosciences, Beijing 100083，China
  • Received:2002-03-21 Revised:2002-07-10 Online:2002-12-20 Published:2002-12-01
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综述了煤中有害物质的种类、分布赋存特征及对环境的影响研究进展。探讨了煤中黄铁矿的形态、世代交替、有机硫的结构及煤中硫的地质成因。阐述了煤中微量元素的种类、地质分布、赋存状态、迁移聚集机制及其环境危害。并对煤及燃煤产物中多环芳烃的种类、赋存规律及对环境和人类健康的危害进行了详细阐述。最后指出了煤中有害物质研究中存在的问题与发展趋势。

关键词: 煤中微量元素, 煤中多环芳烃, 分布与赋存, 环境危害, 煤中硫

The species, distribution and occurrence of harmful substances in coal and their influences on the environment have been systematically reviewed. The shape of pyrite in coal, formation generations, the textures of organic sulfur, and the geological genesis of sulfur in coal have been probed into as well. Three formation generations of pyrite in coal can be divided according to the δ34C values. The contents of thiophene in coal increase with coal rank. The contents of organic sulfur in coal depends on coal macerals. The sources of sulfur in coal mainly come from coal-forming plants and sedimentary environments, and the latter is more important. The δ34C value of sulfur from sea water prefers to be negative, however it prefers to be positive if the sulfur comes from fresh water. The species, distribution, occurrence and accumulation of hazardous minor and trace elements in coal and their harmful influences on the environment have been expounded. The contents and species of minor and trace elements in coal not only depend on the depositional environments and macerals, but also on the regional geological setting. The distribution and occurrence of minor and trace elements in coal can be determined with direct and indirect methods. The minor and trace elements in coals mainly originated from paleosoil, source materials, sea water, magmatic hydrothermal solution and underground water. The components of polycyclic aromatic hydrocarbons in coal, occurrence, and their impact on the environment as well on human health have been detailedly discussed too. The contents of PAHs in coal mainly depends on coal rank and sedimentary environments. However, the species and contents of PAHs in products of coal combustion are different from coal. The impact of particulate matter on the human health is related with the grain size of soot from coal combustion. The smaller is the grain size, the more hazardous is. The PAHs resulted in cancer and mutation is mainly from particulate matter of soot. The PAHs in air mainly come from coal combustion. Finally the existing problems and development trend for the study of harmful substances in coal are pointed out. The coal geology, geochemistry and environmental sciences should be systematically considered during study the harmful substances in coal. And the environmental pollution evaluation of harmful substances should be organically related with environmental pollution remediation as well.

Key words: Slfur in coal, Minor and trace element in coal, PAHs in coal, Distribution and occurrence, Environmental impact.

中图分类号: 

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