ISO 3391:1976
$13.00
Cryolithe, naturelle et artificielle — Dosage du calcium — Méthode par absorption atomique dans la flamme
| Published By | Publication Date | Number of Pages |
| ISO | 1976-09 | 8 |
Describes the preparation of the calibration graph and the dissolution of a test portion in concentrated sulphuric acid and heating on a hot-plate until the hydrofluoric acid has evaporated. Treatment of the residue with concentrated hydrochloric acid. Aspiration of the solution into an acetylene/dinitrogen monoxide flame and spectrophotometric measurement of the absorption of the 422.7-nm line emitted by a calcium hollow cathode lamp.
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