Relationships between Nitrogen Dioxide Personal Exposure and Ambient Air Monitoring Measurements among Children in Three French Metropolitan Areas: VESTA Study

Autor:	Denis Zmirou, Vesta Investigators, Frank Balducci, Florence Ciognard, StÉPhanie Cauvin, FranÇOis Bremont, Isabelle Momas, Marie-Pierre Poilve, Yvon Le Moullec
Rok vydání:	2001
Předmět:	Male Automobile Driving Adolescent Indoor air Nitrogen Dioxide Air pollution Child Welfare medicine.disease_cause Atmospheric sciences chemistry.chemical_compound Oxidants Photochemical Bias Predictive Value of Tests Air Pollution Environmental monitoring medicine Humans Environmental Chemistry Nitrogen dioxide Cooking Child Vehicle Emissions General Environmental Science Urban Health Public Health Environmental and Occupational Health Environmental Exposure Environmental exposure Metropolitan area Ambient air Epidemiologic Studies Cross-Sectional Studies chemistry Air Pollution Indoor Child Preschool Epidemiological Monitoring Linear Models Environmental science Female Spatial variability France Environmental Monitoring
Zdroj:	Archives of Environmental Health: An International Journal. 56:336-341
ISSN:	0003-9896
DOI:	10.1080/00039890109604465
Popis:	In epidemiological studies, investigators have routinely used ambient air concentrations, measured by air-quality monitoring networks, to assess exposure of subjects. When there is great spatial variability of ambient air concentrations or when there are specific indoor exposures, this approach may yield substantial exposure misclassification and distort the associations between exposure and the health endpoints of interest. In 3 French metropolitan areas, the cross-sectional relationships between 48 hr of nitrogen dioxide personal exposure of 73 children and the corresponding 48-hr background ambient air concentrations were analyzed. The crude correlation between ambient air concentrations and personal exposures was poor in all cities (r2 = .009 for Grenoble, r2 = .04 for Toulouse, and r2 = .02 for Paris). These correlations were improved when the authors took into account other ambient air or indoor air sources of nitrogen dioxide emissions (the corresponding multiple linear regression, r2, increased to .43 in Grenoble, .50 in Toulouse, and .37 in Paris). The main variables that explained personal exposures were an index of traffic intensity and proximity and use of a gas cooker at home. The results of this study confirm that ambient air-monitoring site measurements are poor predictors of personal exposure. Investigators should carefully characterize the proximity of roads occupied by dense traffic to the home/school as well as indoor sources of nitric oxide emissions; both of these careful characterizations will assist researchers in the prediction of personal exposure in epidemiological studies.
Databáze:	OpenAIRE
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