ISO 1952:1976

Brown coals and lignites — Method of extraction for the determination of sodium and potassium soluble in dilute hydrochloric acid

95.99 Withdrawal of Standard 18 gush 2008

General information

Current stage: 95.99 Effective date: 18 gush 2008

Originator: ISO

Owner: ISO/TC 27

Type: International Standard

ICS: 73.040

Scope

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).

Life cycle

NOW

WITHDRAWN
ISO 1952:1976
95.99 Withdrawal of Standard
18 gush 2008

REVISED BY

ABANDON
ISO/DIS 1952

PUBLISHED
ISO 1952:2008

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