ISO 6503:1984
Paints and varnishes — Determination of total lead — Flame atomic absorption spectrometric method
OVERVIEW
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.
COMMENTS
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PRODUCT DETAILS
| Status | Current |
|---|---|
| Edition | 1984 |
| No. of Pages | 6 |
| ICS Classification | 87.040 Paints and varnishes |
| Committee | ISO/TC 256 |
| Available for Purchase | For sale in Singapore only |
| Adoption | ISO |