Development of a primary standard for particle number concentration

2025/01/23 by M. Molzahn, M. Goetz, Christian Krause +2 · 1 voice
Environmental Science · Engineering · #Coagulation and Flocculation Studies #Cyclone Separators and Fluid Dynamics #Aerosol Filtration and Electrostatic Precipitation

paper · doi:10.1016/j.measen.2024.101533

openalex publication_date 2025/01/23 · openalex created_date 2025/10/10 · openalex updated_date 2026/05/13

Abstract

This work describes the actual development of the German primary standard for particle number concentration. We are presenting the development of a manufacturer-independent method here in this paper. The independency is a necessary step to understand better the measured raw values of particle number sensors for establishing a robust pathway of traceability to the SI unit Ampere. For this purpose, a so-called Faraday Cup Aerosol Electrometer (FCAE) is used as particle sensor together with an Ultrastable Low-noise Current Amplifier (ULCA). Technical challenges are to get an acceptable SNR for measuring small particles (dp ≤ 20 nm) and low particle concentrations (N ≤ 1000 ∙ cm −3 ).

Discussions

• Seit Mai auch als Anhang zu vol. 38 verfügbar. doi.org/10.1016/j.me... [bsky, 1 points, 0 comments]

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