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Open Access Green as soon as Postprint is submitted to ZB.
Performance of a differential mobility analyzer at different gas compositions.
J. Aerosol Sci. 23, 389-392 (1992)
A differential mobility analyzer (DMA) was tested at different compositions of aerosol and sheath gas flow using monodisperse polystyrene latex particles. The actual size of the particles had been determined by scanning electron microscopy. We found that different conditions of relative humidity in aerosol and sheath flow in the DMA cause changes less than 3% in particle size. Different gas compositions (air and nitrogen, air and carbon dioxide and air and helium) result in a change of particle size less than 6% if the density ratio k of aerosol and sheath flow is close to one (0.95 < k < 1.05). For ratios of k much smaller or larger than one the changes depend on the gas used for the composition. They may range from poor resolution to no resolution at all.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
Electrical Mobility ; Particle Size, Polystyrene Latex, Gas Composition, Relative Humidity, Nitrogen, Carbon Dioxide, Helium
ISSN (print) / ISBN
0021-8502
e-ISSN
1879-1964
Journal
Journal of Aerosol Science
Quellenangaben
Volume: 23,
Issue: SUPPL. 1,
Pages: 389-392
Publisher
Elsevier
Non-patent literature
Publications
Reviewing status
Peer reviewed
Institute(s)
Institute of Radiation Protection (ISS)