ISO 2069:1976 PDF
Aluminium oxide primarily used for the production of aluminium — Determination of calcium content — Flame atomic absorption method
Open preview (PDF)Aluminium oxide primarily used for the production of aluminium — Determination of calcium content — Flame atomic absorption methodAluminium oxide primarily used for the production of aluminium — Determination of calcium content — Flame atomic absorption method
- Document status:
- Withdrawn
- Format:
- Electronic (PDF)
- Number of pages:
- 4
- Publication date:
- August 1, 1976
- Edition:
- ISO IS 2069 edition 1 version 1
- ICS:
- 71.100.10
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.
Technical details
- Technical committee
- ISO/TC 226 - Materials for the production of primary aluminium
- SKU
- ISO 2069:1976
