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ISO 6503:1984

Paints and varnishes - Determination of total lead - Flame atomic absorption spectrometric method
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ISO 6503:1984

Paints and varnishes - Determination of total lead - Flame atomic absorption spectrometric method

PUBLISH DATE 1984
ISO 6503:1984

The method is principle to coating materials having lead contents in the range of about 0,01 % (m/m) to 2 % (m/m), may also be applicable to products with a total lead content of more than 2 % (m/m) when the requirements of precision does not exceed the specified values. two methods are given. The principle of the dry ashing method consists in evaporation of a test portion to dryness and ashing at 475 C and extraction of any lead in the residue with hydrochloric acid; that of the wet oxidation method consists in wet oxidation of a test portion with a mixture of sulfuric acid and hydrogen peroxide or with sulfuric acid and nitric acid and extraction of any lead in the residue with EDTA and ammonia solution.

SDO ISO: International Organization for Standardization
Document Number ISO 6503
Publication Date Oct. 15, 1984
Language en - English
Page Count
Revision Level
Supercedes
Committee ISO TC 35/SC 2
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