Development of a high-volume simultaneous sampler for fine and coarse particles using virtual impactor and cyclone techniques

Tomoaki Okuda, Daiki Shishido, Yoshihiro Terui, Kentaro Fujioka, Ryoma Isobe, Yusuke Iwaki, Koji Funato, Kozo Inoue

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Filter-based sampling techniques are the conventional way to collect particulate matter, but particles collected and entangled in the filter fibers are difficult to be removed and thus not suited for the following cell- and animal-based exposure experiments. Collecting aerosol particles in powder form using a cyclone instead of a filter would be a possible way to solve this problem. We developed a hybrid virtual-impactor/cyclone high-volume fine and coarse particle sampler and assessed its performance. The developed system achieved 50% collection efficiency with components having the following aerodynamic cut-off diameters: virtual impactor, 2.4 μm; fine-particle cyclone, 0.18-0.30 μm; and coarse-particle cyclone, 0.7 μm. The virtual impactor used in our set-up had good PM2.5 separation performance, comparable to that reported for a conventional real impactor. The newly developed sampler can collect fine and coarse particles simultaneously, in combination with exposure testing with collected fine- and coarse-particulate matter samples, should help researchers to elucidate the mechanism by which airborne particles result in adverse health effect in detail.

Original languageEnglish
Pages (from-to)78-86
Number of pages9
JournalAsian Journal of Atmospheric Environment
Volume12
Issue number1
DOIs
Publication statusPublished - 2018 Mar 1

Keywords

  • Coarse particles
  • Cyclone
  • High-volume air sampler
  • PM
  • Powder form
  • Virtual impactor

ASJC Scopus subject areas

  • Environmental Science(all)
  • Atmospheric Science

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