Reference number
ISO 6503:1984
ISO 6503:1984
© ISO 2024
International Standard
ISO 6503:1984
Paints and varnishes — Determination of total lead — Flame atomic absorption spectrometric method
Edition 1
1984-10
1984-10
ISO 6503:1984
12880
Publicado
(Edición 1, 1984)
Esta publicación se revisó y confirmó por última vez en 2024.
Por lo tanto, esta versión es la actual.
Resumen
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.
Informaciones generales
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Estado: PublicadoFecha de publicación: 1984-10Etapa: Norma Internacional confirmada [90.93]
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Edición: 1Número de páginas: 6
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Comité Técnico :ISO/TC 256ICS :87.040
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