ISO-3390 Historical Revision Information
Aluminium oxide primarily used for the production of aluminium -- Determination of manganese content -- Flame atomic absorption method

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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.


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71.100.10 (Materials for aluminium production)

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Document Number

ISO 3390:1976

Revision Level




Publication Date

Sept. 1, 1976

Committee Number

ISO TC 47/SC 7