Nitrogen in Chinese coals

被引:3
作者
Wu D. [1 ]
Lei J. [1 ]
Zheng B. [2 ]
Tang X. [3 ]
Wang M. [2 ]
Hu J. [2 ]
Li S. [2 ]
Wang B. [2 ]
Finkelman R.B. [4 ]
机构
[1] Key Lab. of Poyang Lake Ecology and Bio-resource Utilization, Ministry of Education, College of Environmental Science and Engineering, Nanchang University
[2] Institute of Geochemistry, CAS
[3] Anhui University of Science and Technology
[4] U.S. Geological Survey, Reston, VA 20192
来源
Chinese Journal of Geochemistry | 2011年 / 30卷 / 2期
基金
中国国家自然科学基金;
关键词
coal; distribution; nitrogen;
D O I
10.1007/s11631-011-0506-6
中图分类号
学科分类号
摘要
Three hundred and six coal samples were taken from main coal mines of twenty-six provinces, autonomous regions, and municipalities in China, according to the resource distribution and coal-forming periods as well as the coal ranks and coal yields. Nitrogen was determined by using the Kjeldahl method at U. S. Geological Survey (USGS), which exhibit a normal frequency distribution. The nitrogen contents of over 90% Chinese coal vary from 0.52% to 1.41% and the average nitrogen content is recommended to be 0.98%. Nitrogen in coal exists primarily in organic form. There is a slight positive relationship between nitrogen content and coal ranking. © 2011 Science Press, Institute of Geochemistry, CAS and Springer Berlin Heidelberg.
引用
收藏
页码:248 / 254
页数:6
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