ISO 21438-2:2009

Workplace atmospheres -- Determination of inorganic acids by ion chromatography -- Part 2: Volatile acids, except hydrofluoric acid (hydrochloric acid, hydrobromic acid and nitric acid)

General information
Valid from 04.12.2009
Directives or regulations
Standard history
ISO 21438-2:2009 specifies 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 (HNO3) vapour and mist in workplace air by collection on an alkali-impregnated quartz fibre filter and analysis by ion chromatography. For mist sampling, the method is applicable to the personal sampling of the inhalable fraction of airborne particles and to static (area) sampling. The analytical method is applicable to the determination of masses of 0,01 mg to 2,5 mg of HCl, HBr and HNO3 per sample. The range of concentrations of HCl, HBr and HNO3 in air for which the measuring procedure is applicable is determined by the sampling method selected by the user. For a 240-litre air sample, the working range is approximately 0,04 mg/m3 to 10 mg/m3 for HCl, HBr and HNO3. The procedure is intended to differentiate between the acids and their corresponding salts. If both are present in the air, particulate salts are trapped on a pre-filter. Co-sampled particulate matter trapped on the pre-filter and/or deposited on the walls of the sampler may be analysed, if desired. Acids can react with co-sampled particulate matter on the pre-filter, causing interference with the measurement of the acid concentration.
153.34 € incl tax
153.34 € incl tax
Standard monitoring
Customers who bought this item also bought

CEN/TR 13695-2:2019

Packaging - Requirements for measuring and verifying the four heavy metals and other dangerous substances present in packaging, and their release into the environment - Part 2: Requirements for measuring and verifying dangerous substances present in packaging, and their release into the environment
Newest version Valid from 01.03.2019

ISO/TR 21960:2020

Plastics -- Environmental aspects -- State of knowledge and methodologies
Newest version Valid from 17.02.2020

ISO 21663:2020

Solid recovered fuels — Methods for the determination of carbon (C), hydrogen (H), nitrogen (N) and sulphur (S) by the instrumental method
Newest version Valid from 24.11.2020

EVS-EN ISO 56002:2021

Innovation management - Innovation management system - Guidance (ISO 56002:2019)
Newest version Valid from 01.02.2021