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ISO 2069:1976 PDF

ISO 2069:1976 PDF

Name:
ISO 2069:1976 PDF

Published Date:
08/01/1976

Status:
[ Withdrawn ]

Description:

Aluminium oxide primarily used for the production of aluminium -- Determination of calcium content -- Flame atomic absorption 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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This method is applicable to products having Ca contents greater than 0,003 % (m/m). The principle consists in dissolution of a test portion by the influence of hydrochloric acid under pressure. Addition of sodium ions to promote and to stabilize the emission of calcium, and of lanthanum ions or triethanolamine to increase the sensitivity. Aspiration of the solution into an acetylene-dinitrogen monoxide flame and photometric measurement of the absorption of the 422,7 nm line emitted by a hollow-cathode calcium lamp. For the determination of higher CaO contents (over about 0,03 % (m/m)) an acetylene-air flame can be used. Replaces ISO Recommendation R 2069-1971.


File Size : 1 file , 360 KB
Note : This product is unavailable in Ukraine, Russia, Belarus
Number of Pages : 4
Published : 08/01/1976

History

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