Nanoparticle formation from a commercial air freshener at real-exposure concentrations of ozone

Thai Phuong Vu, Sun Hwa Kim, Seung Bok Lee, Shang Gyoo Shim, Gwi Nam Bae, Jong Ryeul Sohn

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Occupational nanomaterial exposure is an important issue in the manufacture of such products. People are also exposed to various nanoparticles in their living environments. In this study, we investigated nanoparticle formation during the reaction of ozone and volatile organic compounds (VOCs) emitted from a commercial air freshener, one of many widely used consumer products, in a 1-m3 reaction chamber. The air freshener contained various VOCs, particularly terpenes. A petri dish containing 0.5 mL of the air freshener specimen was placed in the bottom of the chamber, and ozone was continuously injected into the center of the chamber at a flow rate of 4 L/min with an ozone concentration of either 50, 100 or 200 ppb. Each test was conducted over a period of about 4 h. The higher ozone concentrations produced larger secondary nanoparticles at a faster rate. The amount of ozone reacted was highly correlated with the amount of aerosol formation. Ratios of reacted ozone concentration and of formed particle mass concentration for the three injected ozone concentrations of 50, 100 and 200 ppb were similar to one other; 4.6: 1.9: 1.0 and 4.7: 2.2: 1.0 for ozone and aerosol mass, respectively.

Original languageEnglish
Pages (from-to)21-28
Number of pages8
JournalAsian Journal of Atmospheric Environment
Volume5
Issue number1
DOIs
Publication statusPublished - 2011 Mar

Keywords

  • Air freshener
  • Condensational growth
  • Nanoparticle
  • Nucleation burst
  • Ozone
  • Volatile organic compounds

ASJC Scopus subject areas

  • Environmental Science(all)
  • Atmospheric Science

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