Reference number
ISO 2366:1974
ISO 2366:1974
© ISO 2024
International Standard
ISO 2366:1974
Cryolite, natural and artificial — Determination of sodium content — Flame emission and atomic absorption spectrophotometric methods
Edition 1
1974-11
1974-11
ISO 2366:1974
7205
Published
(Edition 1, 1974)
This publication was last reviewed and confirmed in 2022.
Therefore this version remains current.
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
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Status: PublishedPublication date: 1974-11Stage: International Standard confirmed [90.93]
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Edition: 1Number of pages: 4
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Technical Committee :ISO/TC 226ICS :71.060.50
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