SS-ISO-21438-1 › Workplace atmospheres Determination of inorganic acids by ion chromatography Part 1: Non-volatile acids (sulfuric acid and phosphoric acid) (ISO 21438-1:2022, IDT)
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This document specifies a method for the determination of the time-weighted average mass concentration of sulfuric acid and phosphoric acid in workplace air by ion chromatography. The anions are detected by conductivity. The method is applicable to the personal sampling of airborne particles, as defined in ISO 7708, and to static (area) sampling. The method does not apply to the determination of sulfur trioxide. The procedure does not differentiate between the acids and their corresponding salts if both are present in the workplace air. The procedure does not differentiate between phosphoric acid and diphosphorus pentoxide (phosphoric anhydride) if both are present in the workplace air.
To find similar documents by classification:
13.040.30 (Workplace atmospheres Air quality of surgery rooms, see 11.080.01)
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Designation Name
SS-ISO 21438-1:2022
Revision Level
2022 EDITION
Status
Current
Publication Date
May 30, 2022
Language(s)
English
Page Count
32
International Equivalent
ISO 21438-1:2022(IDT)