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ISO 5373:1981 PDF

ISO 5373:1981 PDF

Name:
ISO 5373:1981 PDF

Published Date:
11/01/1981

Status:
[ Withdrawn ]

Description:

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

Publisher:
International Organization for Standardization

Document status:
Active
Format:
Electronic (PDF)
Delivery time:
10 minutes
Delivery time (for Russian version):
200 business days
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Choose Document Language:
$15.3
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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.


File Size : 1 file , 340 KB
Note : This product is unavailable in Ukraine, Russia, Belarus
Number of Pages : 4
Published : 11/01/1981
Same As : ISO 5373:1981

History

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