VDI 3492 - Draft

Indoor air, ambient air - Measurement of inorganic fibrous particles - Scanning electron microscopy method

At a glance

German title

Innenraumluft, Außenluft - Messen anorganischer faserförmiger Partikel - Rasterelektronenmikroskopisches Verfahren

Publication date

2024-12

End date of the objection deadline

2025-03-31

Publisher

Engl. VDI/DIN-Kommission Reinhaltung der Luft (KRdL) - Normenausschuss

Author

Technical Division Environmental Measurement Technologies

Related manuals

• VDI/DIN manual Air Pollution Prevention Volume 4: Analysis and Measurement Methods

Number of pages

36

Available in

German

Abstract

This standard specifies a method for determining the number concentration of inorganic fibrous particles in indoor air or outdoor air and the assignment of these fibers to specific fiber classes (chrysotile, amphibole asbestos, calcium sulfate, other inorganic fibers). Fiber counting and classification is carried out using the SEM/EDXA method (scanning electron microscope/energy-dispersive X-ray analysis). The detection limit of the method for the fiber count concentration under the standard conditions specified in the standard is 300 m-3, the analytical sensitivity is 100 m-3. Information is provided on the differentiation of product fibers and the determination of organic fibers. This standard is primarily aimed at experts, engineering offices, specialist remediation companies, laboratories and authorities.