Reference number
ISO 2366:1974
© ISO 2025
International Standard
ISO 2366:1974
Cryolite, natural and artificial — Determination of sodium content — Flame emission and atomic absorption spectrophotometric methods
Edition 1
1974-11
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Published (Edition 1, 1974)
This publication was last reviewed and confirmed in 2022. Therefore this version remains current.

ISO 2366:1974

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Format
CHF 43
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Abstract

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
    Publication date
     : 1974-11
    Stage
    : International Standard confirmed [90.93]
  • Edition
     : 1
    Number of pages
     : 4
  • Technical Committee :
    ISO/TC 226
    ICS :
    71.060.50 
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