ISO 1617:1976
$12.35
Aluminium oxide primarily used for the production of aluminium — Determination of sodium content — Flame emission spectrophotometric method
| Published By | Publication Date | Number of Pages |
| ISO | 1976-09 | 7 |
The method is applicable to sodium contents equal to or greater than 0.05 % (m/m). The principle of the procedure consists in the fusion, at a controlled temperature, of a test portion with a mixture oflithium carbonate and boron trioxide or a mixture of lithium carbonate and lithium tetraborate. Dissolution of the fused mass in hydrochloric acid. Aspiration of the solution into a flame and spectrophotometric measurement of the intensity of the light emitted at a wavelength of 589 nm. – Replaces ISO Recommendation R 1617-1970.
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