What do the symbols used in sulfur analysis of coal mean?
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I would like to ask what the symbols used for sulfur analysis in coal mean: Star, Spar, Ssar, Soar
They should refer to: total sulfur, pyrite sulfur, sulfate sulfur, and organic sulfur, respectively.
What was said upstairs is correct. Specifically, the first letter S stands for the sulfur content; the second letter indicates whether it refers to Total, Pyrite, Sulfate, or Organic. The third and fourth letters together indicate that the measurement basis is on a received-base basis.
SP: Sulfur from pyrite, SS: Sulfate sulfur, SO: Organic sulfur.