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ISO 6503:1984

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

Standard Details

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.

General Information

Status : Published
Standard Type: Main
Document No: ISO 6503:1984
Document Year: 1984
Pages: 6
Edition: 1
  • Section Volume:
  • ISO/TC 256. Pigments, dyestuffs and extenders
  • ICS:
  • 87.040 Paints and varnishes

Life Cycle

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ISO 6503:1984
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