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ISO 2830:1973

Cryolite, natural and artificial — Determination of aluminium content — Atomic absorption method ISO 2830:1973

Publication date:   Dec 1, 1973

General information

90.93 Standard confirmed   Jun 13, 2022

ISO

ISO/TC 226 Materials for the production of primary aluminium

International Standard

71.060.50   Salts

Buying

Published

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Scope

Applicable to products having a normal composition for which the molar ratio NaF/AlF3 is equal to about 3. Dissolution of a test portion in concentrated suphuric acid and elimination of hydrogen fluoride. Treatment with hydrochloric acid and water. Atomization of the solution into an acetylene measurement of the absorption of the 309.3 nm line emitted by an aluminium hollow cathode lamp. Has also been approved by the IUPAC.

Life cycle

NOW

PUBLISHED
ISO 2830:1973
90.93 Standard confirmed
Jun 13, 2022