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NEN ISO 21438-2 : 2009
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WORKPLACE ATMOSPHERES - DETERMINATION OF INORGANIC ACIDS BY ION CHROMATOGRAPHY - PART 2: VOLATILE ACIDS, EXCEPT HYDROFLUORIC ACID (HYDROCHLORIC ACID, HYDROBROMIC ACID AND NITRIC ACID)
12-01-2013
Defines a method for the determination of the time-weighted average mass concentration of hydrogen chloride (HCl) gas and hydrochloric acid mist, hydrogen bromide (HBr) vapour and hydrobromic acid mist and nitric acid (HNO[3]) vapour and mist in workplace air by collection on an alkali impregnated quartz fibre filter and analysis by ion chromatography.
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