Norm

ISO 3391:1976 en

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

31,57

Over deze norm

Status Definitief
Aantal pagina's 4
Gepubliceerd op 01-09-1976
Taal Engels
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.

Details

ICS-code 71.060.50
Nederlandse titel Cryolite, natural and artificial - Determination of calcium content - Flame atomic absorption method
Engelse titel Cryolite, natural and artificial - Determination of calcium content - Flame atomic absorption method

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