Journal article

An improved low-flow thermodenuder

  • Fierz, Martin Institute for Aerosol and Sensor Technology, University of Applied Sciences Northwestern Switzerland, Windisch, Switzerland
  • Vernooij, Martine G. C. Technical Mineralogy, Fribourg University, Switzerland - EMPA, Air Pollution/Environmental Technology, Dübendorf, Switzerland
  • Burtscher, Heinz Institute for Aerosol and Sensor Technology, University of Applied Sciences Northwestern Switzerland, Windisch, Switzerland
    02.09.2007
Published in:
  • Journal of Aerosol Science. - 2007, vol. 38, no. 11, p. 1163-1168
English Thermodenuders are used to remove the volatile fraction of an aerosol. All designs until now have a cooled adsorption section where the volatile material is trapped, but theoretical considerations suggest that the adsorption section should be heated. Therefore, we built a thermodenuder with a heated adsorption section. We tested its performance with respect to particle penetration and its ability to remove DEHS coated onto NaCl nuclei. The measured losses are lower than in previously published designs and the DEHS removal appears to be satisfactory. Additionally, the new thermodenuder is practical for field use thanks to its small size. It should therefore be a good alternative to previous designs.
Faculty
Faculté des sciences et de médecine
Department
Département de Géosciences
Language
  • English
Classification
Earth sciences
License
License undefined
Identifiers
Persistent URL
https://folia.unifr.ch/unifr/documents/300709
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