Bojra dhe verniqe - Percaktimi i permbajtjes se metalit "te tretshem" - Pjesa 7: Përcaktimi i permbajtjes se zhives ne pjesen e lengshme te pigmentit te bojes dhe te porcionit te lengshem te bojrave te tretshem ne uje - Metoda spektrometrike e absorbimit
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
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).
Life cycle
NOW
PUBLISHED SSH ISO 3856-7:2001 60.60
Standard published 1 jan 2001
English