Nitrogen in Chinese coals

Chinese Journal of Geochemistry
By: , and 



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.
Publication type Article
Publication Subtype Journal Article
Title Nitrogen in Chinese coals
Series title Chinese Journal of Geochemistry
DOI 10.1007/s11631-011-0506-6
Volume 30
Issue 2
Year Published 2011
Language English
Larger Work Type Article
Larger Work Subtype Journal Article
Larger Work Title Chinese Journal of Geochemistry
First page 248
Last page 254
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