Reference number
ISO 5994:1979
ISO 5994:1979
© ISO 2024
ISO 5994:1979
Sodium sulphate for industrial use — Determination of calcium content — Flame atomic absorption spectrometric method
Edition 1
1979-09
1979-09
Retirada
Resumen
Specifies a method, the principle of which is based on acidification of a test portion with hydrochlorid acid, aspiration of the test solution into an acetylene-dinitrogen monoxide or acetylene-air-flame, and measurement of the absorption of the 422,7 nm line emitted by a calcium hollow-cathode lamp.