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ISO 2069:1976

Aluminium oxide primarily used for the production of aluminium — Determination of calcium content — Flame atomic absorption method

Aug 1, 1976
95.99   Withdrawal of Standard   Feb 4, 2016

General information

95.99     Feb 4, 2016

ISO

ISO/TC 226

International Standard

71.100.10  

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Scope

This method is applicable to products having Ca contents greater than 0,003 % (m/m). The principle consists in dissolution of a test portion by the influence of hydrochloric acid under pressure. Addition of sodium ions to promote and to stabilize the emission of calcium, and of lanthanum ions or triethanolamine to increase the sensitivity. Aspiration of the solution into an acetylene-dinitrogen monoxide flame and photometric measurement of the absorption of the 422,7 nm line emitted by a hollow-cathode calcium lamp. For the determination of higher CaO contents (over about 0,03 % (m/m)) an acetylene-air flame can be used. Replaces ISO Recommendation R 2069-1971.

Life cycle

NOW

WITHDRAWN
ISO 2069:1976
95.99 Withdrawal of Standard
Feb 4, 2016

National adoptions

SRPS H.B8.607:1979  
ISS

Aluminium oxide primarily used for the production of aluminium — Determination of calcium content — Flame atomic absorption method

95.99   Withdrawal of Standard

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