ISO 21438-3:2026
ISO 21438-3:2026 Workplace atmospheres — Determination of inorganic acids by ion chromatography — Part 3: Hydrofluoric acid and particulate fluorides
CDN $251.00
This publication was last reviewed and confirmed in 2026.
Workplace atmospheres — Determination of inorganic acids by ion chromatography — Part 3: Hydrofluoric acid and particulate fluorides
Description
This document specifies a method for the determination of the time-weighted average mass concentration of soluble particulate fluorides and hydrofluoric acid (HF) in workplace air by collection of the particulate fluorides on a pre-filter and HF on an alkali-impregnated filter and analysis by ion chromatography.
This method is only applicable to determination of particulate fluorides that are soluble using the sample preparation procedure specified.
For aerosol sampling, this method is applicable to the personal sampling of the inhalable fraction of airborne particles, as defined in ISO 7708, and to static (area) sampling.
The method is applicable to the determination of masses of 0,005 mg to at least 1,25 mg of particulate fluorides per sample and 0,015 mg to at least 1,2 mg of HF per sample.
Edition
2
Published Date
2026-06-19
Status
PUBLISHED
Pages
22
Language
English
Format
Secure PDF
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Abstract
This document specifies a method for the determination of the time-weighted average mass concentration of soluble particulate fluorides and hydrofluoric acid (HF) in workplace air by collection of the particulate fluorides on a pre-filter and HF on an alkali-impregnated filter and analysis by ion chromatography.
This method is only applicable to determination of particulate fluorides that are soluble using the sample preparation procedure specified.
For aerosol sampling, this method is applicable to the personal sampling of the inhalable fraction of airborne particles, as defined in ISO 7708, and to static (area) sampling.
The method is applicable to the determination of masses of 0,005 mg to at least 1,25 mg of particulate fluorides per sample and 0,015 mg to at least 1,2 mg of HF per sample.
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