Aktivní norma | Vydána: 01.10.1984

ISO 6503:1984

Paints and varnishes — Determination of total lead — Flame atomic absorption spectrometric method
(Peintures et vernis — Détermination du plomb total — Méthode par spectrométrie d´absorption atomique dans la flamme)

Dostupné jazyky: Anglicky, Francouzsky

Dostupné provedení: Elektronické PDF, Tištěné

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Podrobné informace

Označení: ISO 6503:1984

Datum vydání: 01.10.1984

Stran: 6

Země: Mezinárodní technická norma

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Anotace

Description / Abstract: 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.

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