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ISO 2366:1974

Cryolite, natural and artificial — Determination of sodium content — Flame emission and atomic absorption spectrophotometric methods

Standard Details

The methods are applicable as alternatives to products for which the molar ratio NaF/AlF3 is equal to about 3. The principle of the flame emission method consists in atomization of the test solution in a flame of oxygen/hydrogen and determination by measurement of the intensity of the radiation at 589 nm. The principle of the flame atomic absorption method is based on atomization in an air/acetylene flame and measuremnt of the absorption of the 589 nm line emitted by a sodium hollow-cathode lamp. The preparation of the test solution is carried out by dissolution of a test portion in hydrochloric acid and water after attack by concentreted sulphuric acid.

General Information

Status : Published
Standard Type: Main
Document No: ISO 2366:1974
Document Year: 1974
Pages: 4
Edition: 1
  • Section Volume:
  • ISO/TC 226. Materials for the production of primary aluminium

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ISO 2366:1974
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