Indoor and outdoor nitrogen dioxide concentration in residential houses in Australia

He, Congrong, Morawska, Lidia, Hitchins, Jane, & Gilbertb, Dale (2003) Indoor and outdoor nitrogen dioxide concentration in residential houses in Australia. In Proceedings of ISIAQ 7th International Conference, National University of Singapore, National University of Singapore, Singapore, pp. 409-413.

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As part of a larger indoor environmental study, residential indoor and outdoor levels of nitrogen dioxide (NO2) were measured for 14 houses in a suburb of Brisbane, Queensland, Australia. Passive samplers were used for 48-h sampling periods during the winter of 1999. The average indoor and outdoor NO2 levels were 13.8 ± 6.3 and 16.7 ± 4.2 ppb, respectively. The indoor/outdoor NO2 concentration ratio ranged from 0.4 to 2.3, with a median value of 0.82. The results of statistic analyses indicated that there was no significant correlation between indoor and outdoor NO2 concentrations, or between indoor and fixed site NO2 monitoring station concentrations. However, there was a significant correlation between outdoor and fixed site NO2 monitoring station concentrations. There was also a significant correlation between indoor NO2 concentration and indoor submicrometre (0.007–0.808 μm) aerosol particle number concentrations. The results in this study indicated indoor NO2 levels are significantly affected by indoor NO2 sources, such as a gas stove and cigarette smoking. It implies that the outdoor or fixed site monitoring concentration alone is a poor predictor of indoor NO2 concentration.

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ID Code: 40682
Item Type: Conference Paper
Refereed: Yes
Keywords: nitrogen dioxide
Subjects: Australian and New Zealand Standard Research Classification > EARTH SCIENCES (040000) > ATMOSPHERIC SCIENCES (040100) > Atmospheric Sciences not elsewhere classified (040199)
Divisions: Past > QUT Faculties & Divisions > Faculty of Science and Technology
Copyright Owner: Copyright 2003 [please consult the authors]
Deposited On: 14 Mar 2011 22:55
Last Modified: 10 Aug 2011 14:16

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