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METHODS FOR SAMPLING AND INORGANIC ANALYSIS OF COAL
U.S. Geological Survey Bulletin 1823

Edited by D.W. Golightly and F.O. Simon


Table 31. Pyritic sulfur in coal by direct method

  Pyritic Sulfur Concentration (percent)
Standard Measuredb nb
771 0.018 ± 0.003 (3)
772 0.017 ± 0.004 (3)
774 0.17     (2)
775 0.39     (2)
780 0.87     (2)
782 1.47     (2)
aSource: Standards are from Alpha Resources (1985).
bPyritic sulfur concentrations measured in U.S. Geological Survey laboratories. Values shown for each coal standard are the arithmetic mean and standard deviation for n measurements, where n is the number in Parentheses.
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