ISO-7252 › Paints and varnishes - Determination of total mercury - Flameless atomic absorption spectrometric method
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The reference method described is applicable to products having total mercury contents in the range of about 0.01 % (m/m) to 0.5 % (m/m). May also be extended to products with a total content of more than 0.5 % (m/m). The principle of the method consists in the combustion of the test portion with oxygen in an enclosed system. Reduction of the mercury(II) compounds contained in the resulting solution to elementary mercury. Entrainment of the metal in a gas stream at ambient temperature and determination as the monoatomic vapour by cold vapour atomic absorption spectrometry at a wavelength in the region of 253.7 nm.
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87.040 (Paints and varnishes Including coating powders, paint coatings and protective paint systems)
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Document Number
ISO 7252:1984
Revision Level
1ST EDITION
Status
Current
Publication Date
Nov. 15, 1984
Committee Number
ISO TC 35/SC 2