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ISO 13794

Ambient air — Determination of asbestos fibres — Indirect-transfer transmission electron microscopy method

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Organization: ISO
Publication Date: 1 October 2019
Status: active
Page Count: 90
ICS Code (Ambient atmospheres): 13.040.20
scope:

This document specifies a reference method using transmission electron microscopy for the determination of airborne asbestos fibres and structures in in a wide range of ambient air situations, including the interior atmospheres of buildings, and for a detailed evaluation for asbestos structures in any atmosphere. The specimen preparation procedure incorporates ashing and dispersion of the collected particulate, so that all asbestos is measured, including the asbestos originally incorporated in particle aggregates or particles of composite materials. The lengths, widths and aspect ratios of the asbestos fibres and bundles are measured, and these, together with the density of the type of asbestos, also allow the total mass concentration of airborne asbestos to be calculated. The method allows determination of the type(s) of asbestos fibres present. The method cannot discriminate between individual fibres of the asbestos and elongate fragments (cleavage fragments and acicular particles) from non-asbestos analogues of the same amphibole mineral[12].

[12] Campbell W.J., B lake R.L., B rown L.L., C ather E.E., Sjoberg J.J. Selected silicate minerals and their asbestiform varieties. Mineralogical definitions and identification-characterization. Information circular 8751. United States Department of the Interior, Bureau of Mines, Washington, D.C., 1977

Document History

ISO 13794
October 1, 2019
Ambient air — Determination of asbestos fibres — Indirect-transfer transmission electron microscopy method
This document specifies a reference method using transmission electron microscopy for the determination of airborne asbestos fibres and structures in in a wide range of ambient air situations,...
July 15, 1999
Ambient Air - Determination of Asbestos Fibres - Indirect-Transfer Transmission Electron Microscopy Method
A description is not available for this item.

References

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