ISO 5373:1981 ✓ Most Recent [ Withdrawn ]

718646

Condensed phosphates for industrial use (including foodstuffs) -- Determination of calcium content -- Flame atomic absorption spectrometric method

standard by International Organization for Standardization , 11/01/1981

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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.

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Product Details

Published:

11/01/1981

Number of Pages:

4

File Size:

1 file

Same As:

BS 4427-13:1982

Note:

This product is restricted and cannot be purchased in the following countries Ukraine, Russia, Belarus