Reference number
ISO 3390:1976
ISO 3390:1976
© ISO 2024
ISO 3390:1976
Aluminium oxide primarily used for the production of aluminium — Determination of manganese content — Flame atomic absorption method
Edition 1
1976-09
1976-09
Retirada
Resumen
Applicable to products having a Mn content between 0.0002 % (m/m) and 0.005 % (m/m). Preliminary extraction by the method specified in the annex if the apparatus available does not have a sufficient sensitivity. Describes the dissolution of a test sample by heating in a sealed borosilicate glass tube with hydrochloric acid at a controlled temperature of 250 °C. Aspiration of the solution in an air-acetylene flame and spectrophotometric measurement of the absorption of the 279.5-nm line emitted by a manganese hollow cathode lamp.
Informaciones generales
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Estado: RetiradaFecha de publicación: 1976-09Etapa: Retirada de la Norma Internacional [95.99]
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Edición: 1Número de páginas: 6
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Comité Técnico :ISO/TC 226ICS :71.100.10
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