LoginThe purpose of this paper is to document the potential impact on indoor air quality of outdoorozone during photochemical pollution episodes. A preliminary one-day experiment wasconducted during summer 2002 in a room of the CSTB experimental house MARIA. Ozone,VOC and aldehyde concentrations were monitored outdoors and indoors from 8 a.m. to 8 p.m.Outdoor ozone hourly mean concentrations increased from 30 to 100 g/m3 during the day.The indoor to outdoor ratio ranged from 0.10 to 0.25, indicating possible ozone-inducedreactions occurring indoors. a-Pinene concentrations decreased from 30 to 15 g/m3suggesting indoor gas phase reactions. At the same time, formaldehyde concentrationsincreased from 70 to 100 g/m3. Both heterogeneous reactions of ozone with buildingproducts and gas phase reactions of ozone with some indoor pollutants (mainly terpenes)could produce secondary pollutants, such as aldehydes, as observed during this experiment.
Impact of ozone on indoor air quality: a preliminary field study
Year:
2003
Bibliographic info:
Healthy Buildings 2003 - Proceedings 7th International Conference (7th-11th December 2003) - National University of Singapore - Vol. 1., pp 247-252, 4 Fig., 2 Tab., 12 Ref.