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ISO 7252:1984

Paints and varnishes — Determination of total mercury — Flameless atomic absorption spectrometric method
1. 11. 1984.

Опште информације

90.93     23. 10. 2024.

ISO

ISO/TC 256

Međunarodni standard

87.040  

francuski   engleski  

Kupovina

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Apstrakt

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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TRENUTNO

OBJAVLJEN
ISO 7252:1984
90.93 Odluka o potvrđivanju standarda
23. 10. 2024.