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SRPS H.B8.123:1980

Cryolite, natural and artificial — Determination of calcium content — Flame atomic absorption method

Jun 21, 1980
Jun 21, 1980
95.99   Withdrawal of Standard   Dec 20, 2012

General information

95.99     Dec 20, 2012

ISS

B082

International Standard

71.060.50  

Serbian  

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Scope

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.

Life cycle

NOW

WITHDRAWN
SRPS H.B8.123:1980
95.99 Withdrawal of Standard
Dec 20, 2012

Related project

Adopted from ISO 3391:1976