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  • BSI
    BS ISO 21438-3:2010 Workplace atmospheres. Determination of inorganic acids by ion chromatography - Hydrofluoric acid and particulate fluorides
    Edition: 2010
    $442.60
    / user per year

Description of BS ISO 21438-3:2010 2010

This part of ISO 21438 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.

The method is only applicable to determination of particulate fluorides that are soluble using the sample preparation procedure specified.

For aerosol sampling, the 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 0,012 5 mg to at least 1,2 mg of HF per sample.

The concentration range of particulate fluorides and HF in air for which the measuring procedure is applicable is determined by the sampling method selected by the user. For a 120 l air sample, the working range is approximately 0,04 mg m−3 to at least 10 mg m-3 for particulate fluorides and approximately 0,13 mg m-3 to at least 10 mg m-3 for HF.

HF can react with co-sampled particulate matter on the pre-filter, causing an interference on the measured concentration.



Standard NumberBS ISO 21438-3:2010
TitleWorkplace atmospheres. Determination of inorganic acids by ion chromatography - Hydrofluoric acid and particulate fluorides
StatusUnder Review
Publication Date2010-12-31
Identical National Standard OfISO 21438-3:2010
DescriptorsOccupational safety, Air, Chemical analysis and testing, Fluorides, Industrial air pollutants, Particulate air pollutants, Ion-exchange chromatography, Determination of content, Hydrofluoric acid, Environment (working), Inorganic acids, Air pollution
ICS13.040.30 Workplace atmospheres
CommitteeEH/2/2
ISBN978 0 580 58963 8
PublisherBSI
Pages40

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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