Vu, T.P. Kim, S.-H. Lee, S.-B. Shim, S.-G. Bae, G.-N. Sohn, J.R. 2024-01-20T17:32:04Z 2024-01-20T17:32:04Z 2021-09-02 2011-03 1976-6912 https://pubs.kist.re.kr/handle/201004/130574 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. English Korean Society for Atmospheric Environment Nanoparticle formation from a commercial air freshener at real-exposure concentrations of ozone Article 10.5572/ajae.2011.5.1.021 1 Asian Journal of Atmospheric Environment, v.5, no.1, pp.21 - 28 Asian Journal of Atmospheric Environment 5 1 21 28 scopus kci other 2-s2.0-84870032404 Article Air freshener Condensational growth Nanoparticle Nucleation burst Ozone Volatile organic compounds