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Product Product ISO 21438-1:2022
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Description Description

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.

Standard Number Standard Number ISO 21438-1:2022
Title Title ISO 21438-1:2022 Workplace atmospheres — Determination of inorganic acids by ion chromatography — Part 1: Non-volatile acids (sulfuric acid and phosphoric acid)
Status Status Published
Publication Date Publication Date 24 May 2022
Cross References Cross References
Descriptors Descriptors
ICS ICS 13.040.30
Committee Committee ISO/TC 146/SC 2 Workplace atmospheres
ISBN ISBN
Publisher Publisher PECB Store
Format Format PDF
Delivery Delivery NO
Pages Pages 22
File Size File Size KB