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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 29. Sulfate sulfur in coal

  Sulfate Sulfur concentration (percent)
Standard Accepteda Measuredb nb
771 0.01 <0.01     (7)
772 0.03 0.035 ± 0.012 (5)
774 0.01 <0.01     (6)
775 0.01 <0.01     (7)
780 0.13 0.13 ± 0.05 (6)
782 0.06 0.046 ± 0.046 (7)
aSource: Accepted sulfate sulfur concentrations for standards are from Alpha Resources, Inc. (1985).
bSulfate 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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