The reference method specified is based on igniting a test portion (of hard coal, brown coal, lignite, or coke) in intimate contact with Eschka mixture in an oxidizing atmosphere, removal of combustible matter and conversion of the sulfur to sulfate, extraction of sulfate with hydrochloric acid solution and gravimetric determination by precipitation with barium chloride.

General information

  • Status :  Withdrawn
    Publication date : 1992-12
  • Edition : 2
    Number of pages : 5
  • :
    ISO/TC 27/SC 5
    Methods of analysis
  • 73.040
    Solid fuels

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