Reference number
ISO 3856-4:1984
ISO 3856-4:1984
© ISO 2024
International Standard
ISO 3856-4:1984
Paints and varnishes — Determination of "soluble" metal content — Part 4: Determination of cadmium content — Flame atomic absorption spectrometric method and polarographic method
Edition 2
1984-10
1984-10
ISO 3856-4:1984
9428
Publicado
(Edición 2, 1984)
Esta publicación se revisó y confirmó por última vez en 2023.
Por lo tanto, esta versión es la actual.
Resumen
The principle of the AAS method consists in inspiration of the test solution into an acetylen/air flame. Measurement of the absorption of the selected spectral line emitted by a cadmium hollow-cathode or cadmium discharge lamp, in the region of 228,8 nm. The principle of the polarographic method consists in electrolysis of the test solution in a polarographic cell measurement of the corresponding heigth of the potential step. The method are applicable to coating materials having "soluble" cadmium contents in the range of about 0,05 % (m/m) to 5 % (m/m). The AAS method should be used as the referee method in cases of dispute. This second edition cancels and replaces ISO 3856/4-1980.
Informaciones generales
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Estado: PublicadoFecha de publicación: 1984-10Etapa: Norma Internacional confirmada [90.93]
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Edición: 2Número de páginas: 6
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Comité Técnico :ISO/TC 256ICS :87.040
- RSS actualizaciones
Ciclo de vida
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Anteriormente
RetiradaISO 3856-4:1980
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Ahora