ISO 5373:1981
Condensed phosphates for industrial use (including foodstuffs) — Determination of calcium content — Flame atomic absorption spectrometric method
OVERVIEW
Applicable to products having Ca contents equal to or more than 50 mg/kg. The presence of soluble SiO2 up to 5 g/ml in the test solution does not interfere. Hydrolysis by boiling a test portion in hydrochloric acid medium. Addition of sodium ions, until a constant concentration is obtained, to stabilize the promotion and emission of Ca; addition of lanthanum chloride to increase the sensitivity of the method. Aspiration of the solution into a dinitrogen monoxide-acetylene flame. Spectrometric measurement of the absorption of the 422.7-nm line emitted by a hollow-cathode calcium lamp. Has also been approved by the IUPAC.
COMMENTS
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PRODUCT DETAILS
| Status | Withdrawn - 01 Feb 2024 |
|---|---|
| Edition | 1981 |
| No. of Pages | 4 |
| ICS Classification | 71.060.50 Salts 67.220.20 Food additives |
| Committee | ISO/TC 47 |
| Available for Purchase | For sale in Singapore only |
| Adoption | ISO |