Due to concern regarding poor ambient air quality in the Fraser Valley, a series of exposure and health effects assessments were performed to evaluate the impact of summer photochemical air pollution.
In 1992 and 1993, three groups of individuals were selected for personal monitoring of ozone exposure, based on prior expectations of their activity patterns.
The first group spent a majority of the work day indoors or commuting, the second group spent more time outdoors and the third group spent the entire personal monitoring period outdoors.
Time-activity data were collected for the first two groups and differences in personal ozone exposures were found to be associated with the fraction of time a person spent outdoors.
Similarly, differences among groups in the mean ozone exposure were associated with time spent outdoors.
These results and other exposure information were used to design a study of the health impacts of summer ambient air pollution that was conducted during the time period of the Pacific'93 field campaign.
Aerosol acidity levels in the Fraser Valley were observed to be very low in 1992 so the health study focused on the effects of ozone exposure.
The subjects were adult farm workers (26 male, 32 female ; mean age 44.4, range 10-69) who spent the entire working day outdoors (a subset of group 3 above).
Lung function measurements were made twice daily on each subject, once before and once after their work shift, from 23 June-26 August 1993. (...)
Mots-clés Pascal : Ozone, Exposition, Chronique, Pollution air, Eté, Pollution intérieur, Extérieur, Appareil portatif, Teneur air, Analyse quantitative, Canada, Amérique du Nord, Amérique, Qualité air, Homme, Toxicité, Smog, Fonction respiratoire, Dose limite, Concentration maximale admissible, Mesure, Acide, Aérosol
Mots-clés Pascal anglais : Ozone, Exposure, Chronic, Air pollution, Summer, Indoor pollution, Outer, Portable equipment, Air content, Quantitative analysis, Canada, North America, America, Air quality, Human, Toxicity, Smog, Lung function, Limit dose, Maximum permissible concentration, Measurement, Acids, Aerosols
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 97-0392068
Code Inist : 002B03M02. Création : 12/09/1997.