ISO 1952:1976
Withdrawn
Date published:
Brown coals and lignites — Method of extraction for the determination of sodium and potassium soluble in dilute hydrochloric acid
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).
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73.040 Coals
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ISO 1952:1976
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