Fine particle counting with aerodynamic particle focusing and corona charging

Z. C. Tan, A. S. Wexler

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


The conceptual design and evaluation of a fine particle sizing and counting instrument are introduced in this paper. A corresponding laboratory prototype was developed by coupling aerodynamic particle focusing with corona charging techniques that could detect particle sizes down to 25 nm in diameter. Comparison between the prototype and a condensation particle counter (CPC) using identical monodisperse particles showed that the measurements agreed well for the particle sizes in the range of 60-300 nm.

Original languageEnglish (US)
Pages (from-to)5271-5279
Number of pages9
JournalAtmospheric Environment
Issue number25
StatePublished - Aug 2007


  • Aerodynamic focusing
  • Corona charging
  • Fine particle
  • Particle counting

ASJC Scopus subject areas

  • Atmospheric Science
  • Environmental Science(all)
  • Pollution


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