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Withdrawn
Withdrawn (Edition 1, 1976)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     : Withdrawn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

Life cycle

Got a question?

Check out our FAQs

Customer care
+41 22 749 08 88

Opening hours:
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)

  2. Store
  3. Standards catalogue
  4. ICS
  5. 73
  6. 73.040
  7. ISO 1952:1976