DOI | Resolve DOI: https://doi.org/10.1021/es3050828 |
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Author | Search for: Fadeyi, M.O.; Search for: Weschler, C.J.; Search for: Tham, K.W.; Search for: Wu, W.Y.; Search for: Sultan, Z.M.1 |
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Affiliation | - National Research Council of Canada. Construction
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Format | Text, Article |
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Subject | Air handling systems; Fast mobility particle sizers; Identical conditions; Indoor pollutants; Mass concentration; Office environments; Ozone concentration; Secondary organic aerosols; Aerosols; Experiments; Monoterpenes; Ozone; limonene; ozone; terpene; aerosol; atmospheric pollution; concentration (composition); estimation method; experimental study; human activity; indoor air; ozone; simulation; ultraviolet radiation; adult; air pollution; chemical reaction; concentration (parameters); environmental exposure; microclimate; photometry; pollutant; secondary organic aerosol; work environment |
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Abstract | Several studies have documented reductions in indoor ozone levels that occur as a consequence of its reactions with the exposed skin, hair and clothing of human occupants. One would anticipate that consumption of ozone via such reactions would impact co-occurring products derived from ozone's reactions with various indoor pollutants. The present study examines this possibility for secondary organic aerosols (SOA) derived from ozone-initiated chemistry with limonene, a commonly occurring indoor terpene. The experiments were conducted at realistic ozone and limonene concentrations in a 240 m3 chamber configured to simulate a typical open office environment. During an experiment the chamber was either unoccupied or occupied with 18-20 workers. Ozone and particle levels were continuously monitored using a UV photometric ozone analyzer and a fast mobility particle sizer (FMPS), respectively. Under otherwise identical conditions, when workers were present in the simulated office the ozone concentrations were approximately two-thirds and the SOA mass concentrations were approximately one-half of those measured when the office was unoccupied. This was observed whether new or used filters were present in the air handling system. These results illustrate the importance of accounting for occupancy when estimating human exposure to pollutants in various indoor settings. © 2013 American Chemical Society. |
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Publication date | 2013 |
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In | |
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Language | English |
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Peer reviewed | Yes |
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NPARC number | 21269833 |
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Export citation | Export as RIS |
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Report a correction | Report a correction (opens in a new tab) |
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Record identifier | 5848f3a5-9481-4510-b71a-3a42b616aabe |
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Record created | 2013-12-13 |
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Record modified | 2020-04-22 |
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