Aktivní norma | Vydána: 01.12.1984

ISO 3856-7:1984

Paints and varnishes — Determination of "soluble" metal content — Part 7: Determination of mercury content of the pigment portion of the paint and of the liquid portion of water-dilutable paints — Flameless atomic absorption spectrometric method
(Peintures et vernis — Détermination de la teneur en métaux "solubles" — Partie 7: Détermination de la teneur en mercure contenu dans le pigment et dans la fraction liquide des peintures hydrodiluables — Méthode par spectrométrie d´absorption atomique sans flamme)

Dostupné jazyky: Anglicky, Francouzsky

Dostupné provedení: Elektronické PDF, Tištěné

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Podrobné informace

Označení: ISO 3856-7:1984

Datum vydání: 01.12.1984

Stran: 8

Země: Mezinárodní technická norma

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Anotace

Description / Abstract: The principle consists in oxidation of the of hte mercury compounds contained in the test solution obtained from the pigment portion of the paint or combustion with oxygen in an enclosed system of the evaporation residue of the test solution obtained from the liquid portion of water-dilutable paints. Reduction of the mercury(II) compounds to elementary mercury. Determination of the mercury, as the monoatomic vapour, by cold vapour (flameless) atomic absorption spectrometry at a wavelength in the region of 253,7 nm. The method is applicable to coating materials having "soluble" mercury contents in the range of about 0,005 % (m/m) to 0,05 % (m/m).

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