Development of a high-volume PM<inf>2.5</inf> particle sampler using impactor and cyclone techniques

Tomoaki Okuda, Ryoma Isobe, Yusuke Nagai, Shunichi Okahisa, Koji Funato, Kozo Inoue

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Detailed mechanisms of the cellular biochemical reactions associated with the toxicity of PM<inf>2.5</inf> have not been elucidated well so far, because it is difficult to collect a sufficient amount of PM<inf>2.5</inf> particles to carry out toxicity assays using cells. A high-volume PM<inf>2.5</inf> particle sampler using the impactor and cyclone techniques has been developed in this study. The 50% cut-points of the impactor and cyclone for ambient aerosols at 1,100 L/min of air flow were 2.0 μm and 0.15–0.18 μm, respectively. The separation characteristics of the impactor were similar to those of the WINS impactor. The contents of EC, which is an aggregate/agglomerate of primary particles with sizes less than 100 nm, in the cyclone particles was similar to that in the filter particles. The contents of organic matter and ammonium in the particles collected using the cyclone system were lower than those in the particles collected using traditional filter sampling. We propose that the highvolume PM<inf>2.5</inf> particle sampler developed in this study can collect a large amount of aerosol particles in a “powder form” and can also avoid certain sampling artifacts caused by the adsorption of volatile organic compounds and gaseous ammonia to particles on the filter media. The sampling device developed in this study allows researchers to collect a sufficient amount of PM<inf>2.5</inf> particles for cell exposure studies without the use of filters.

Original languageEnglish
Pages (from-to)759-767
Number of pages9
JournalAerosol and Air Quality Research
Volume15
Issue number3
DOIs
Publication statusPublished - 2015

Fingerprint

cyclone
sampler
Sampling
Aerosols
Toxicity
Volatile Organic Compounds
filter
Volatile organic compounds
Ammonium Compounds
Ammonia
Powders
Biological materials
Particles (particulate matter)
Assays
sampling
Adsorption
aerosol
toxicity
particle
impactor

Keywords

  • Ambient aerosols
  • Cyclone
  • In vitro bioassay
  • Inertial impactor
  • Particle form

ASJC Scopus subject areas

  • Environmental Chemistry
  • Pollution

Cite this

Development of a high-volume PM<inf>2.5</inf> particle sampler using impactor and cyclone techniques. / Okuda, Tomoaki; Isobe, Ryoma; Nagai, Yusuke; Okahisa, Shunichi; Funato, Koji; Inoue, Kozo.

In: Aerosol and Air Quality Research, Vol. 15, No. 3, 2015, p. 759-767.

Research output: Contribution to journalArticle

Okuda, Tomoaki ; Isobe, Ryoma ; Nagai, Yusuke ; Okahisa, Shunichi ; Funato, Koji ; Inoue, Kozo. / Development of a high-volume PM<inf>2.5</inf> particle sampler using impactor and cyclone techniques. In: Aerosol and Air Quality Research. 2015 ; Vol. 15, No. 3. pp. 759-767.
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