Reference number
ISO 1952:1976
© ISO 2024
ISO 1952:1976
Brown coals and lignites — Method of extraction for the determination of sodium and potassium soluble in dilute hydrochloric acid
Edition 1
1976-06
Withdrawn
Withdrawn (Edition 1, 1976)

Abstract

The sample of brown coal or lignite is extracted with boiling 0,005 N hydrochloric acid and the extract centrifuged. The sodium and potassium in solution are determined by any precise analytical method (for example, gravimetric method or flame photometric method).

General information

  • Status
     : Withdrawn
    Publication date
     : 1976-06
    Stage
    : Withdrawal of International Standard [95.99]
  • Edition
     : 1
    Number of pages
     : 2
  • Technical Committee :
    ISO/TC 27
    ICS :
    73.040 
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