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Atmospheric Measurement Techniques An interactive open-access journal of the European Geosciences Union
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  07 Oct 2020

07 Oct 2020

Review status: a revised version of this preprint was accepted for the journal AMT and is expected to appear here in due course.

Facility for generation of ambient-like model aerosols in the laboratory: application in the intercomparison of automated PM monitors with the reference gravimetric method

Stefan Horender1, Kevin Auderset1, Paul Quincey2, Stefan Seeger3, Søren Nielsen Skov4, Kai Dirscherl5, Thomas O. M. Smith2, Katie Williams2, Camille C. Aegerter1, Daniel M. Kalbermatter1, François Gaie-Levrel6, and Konstantina Vasilatou1 Stefan Horender et al.
  • 1Federal Institute of Metrology METAS, Bern-Wabern, 3003, Switzerland
  • 2National Physical Laboratory (NPL), Teddington, London, UK
  • 3Bundesanstalt für Materialforschung und -prüfung (BAM), Berlin, Germany
  • 4Bioengineering and Environmental Technology, Danish Technological Institute (DTI), Aarhus, Denmark
  • 5Danish National Metrology Institute (DFM), Kogle Alle 5, 2970 Hørsholm, Denmark
  • 6Laboratoire national de métrologie et d’essais (LNE), Paris, France

Abstract. A new facility has been developed which allows for a stable and reproducible generation of ambient-like aerosols in the laboratory. The setup consists of multiple aerosol generators, a custom-made flow tube homogeniser, isokinetic sampling probes and a system to control aerosol temperature and humidity. Model aerosols containing elemental carbon, secondary organic matter from the photo-oxidation of α-pinene, inorganic salts such as ammonium sulphate and ammonium nitrate, mineral dust particles and water were generated at different environmental conditions and different number and mass concentrations. The aerosol physical and chemical properties were characterised with an array of experimental methods, including scanning mobility particle sizing, ion chromatography, total reflection X-ray fluorescence spectroscopy, and thermo-optical analysis. The facility is very versatile and can find applications in the calibration and performance characterisation of aerosol instruments monitoring ambient air. In this study, we performed, as proof of concept, an intercomparison of three different commercial PM (particulate matter) monitors (TEOM 1405, DustTrak DRX 8533 and Fidas Frog) with the gravimetric reference method under three simulated environmental scenarios. The results are presented and compared to previous field studies. We believe that the laboratory-based method for simulating ambient aerosols presented here could provide in the future a useful alternative to time-consuming and expensive field campaigns, which are often required for instrument certification and calibration.

Stefan Horender et al.

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement

Stefan Horender et al.

Stefan Horender et al.


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