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  4. Diffusional deposition of ultrafine aerosols on nuclepore filters
 
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1982
Journal Article
Title

Diffusional deposition of ultrafine aerosols on nuclepore filters

Other Title
Diffusionsablagerung von ultrafeinen Aerosolen auf Nuclepore-Filtern
Abstract
The fractional penetrations of aerosols between 10 and 100 nm through nuclepore filters are measured for four different aerosols. Nuclepore filter pore diameters varied from 2 to 12 mm while superficial facial velocities ranged from 0.8 to 6.6 cm s−1. Qualitatively, differences were observed between aerosols greater than 40 nm and the condensation aerosols with diameters less than 30 nm. For the smaller particles, the aerosols were widely distributed over the filter face while the larger aerosols were concentrated near the rims of the pore. Comparisons between the experimental measurements and theory show that the collection efficiencies are consistently underestimated by theory. For the smaller condensation aerosols, the experiments show nearly uniform deposition over the face of the filter.
Author(s)
Gentry, J.W.
Spurny, K.R.
Schoermann, J.
Journal
Atmospheric environment  
DOI
10.1016/0004-6981(82)90311-0
Language
English
IUCT  
Keyword(s)
  • aerosol

  • Diffusionsablagerung

  • filtration

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