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Modeling indoor air pollution of outdoor origin in homes of SAPALDIA subjects in Switzerland

Meier, Reto and Schindler, Christian and Eeftens, Marloes and Aguilera, Inmaculada and Ducret-Stich, Regina E. and Icneichen, Alex and Davey, Mark and Phuleria, Harish C. and Probst-Hensh, Nicole and Tsai, Ming-Yi and Künzli, Nino. (2015) Modeling indoor air pollution of outdoor origin in homes of SAPALDIA subjects in Switzerland. Environment international, 82. pp. 85-91.

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Official URL: http://edoc.unibas.ch/dok/A6391034

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Abstract

Given the shrinking spatial contrasts in outdoor air pollution in Switzerland and the trends toward tightly insulated buildings, the Swiss Cohort Study on Air Pollution and Lung and Heart Diseases in Adults (SAPALDIA) needs to understand to what extent outdoor air pollution remains a determinant for residential indoor exposure. The objectives of this paper are to identify determining factors for indoor air pollution concentrations of particulate matter (PM), ultrafine particles in the size range from 15 to 300nm, black smoke measured as light absorbance of PM (PMabsorbance) and nitrogen dioxide (NO2) and to develop predictive indoor models for SAPALDIA. Multivariable regression models were developed based on indoor and outdoor measurements among homes of selected SAPALDIA participants in three urban (Basel, Geneva, Lugano) and one rural region (Wald ZH) in Switzerland, various home characteristics and reported indoor sources such as cooking. Outdoor levels of air pollutants were important predictors for indoor air pollutants, except for the coarse particle fraction. The fractions of outdoor concentrations infiltrating indoors were between 30% and 66%, the highest one was observed for PMabsorbance. A modifying effect of open windows was found for NO2 and the ultrafine particle number concentration. Cooking was associated with increased particle and NO2 levels. This study shows that outdoor air pollution remains an important determinant of residential indoor air pollution in Switzerland.
Faculties and Departments:09 Associated Institutions > Swiss Tropical and Public Health Institute (Swiss TPH)
09 Associated Institutions > Swiss Tropical and Public Health Institute (Swiss TPH) > Department of Epidemiology and Public Health (EPH) > Chronic Disease Epidemiology > Exposome Science (Probst-Hensch)
03 Faculty of Medicine > Departement Public Health > Sozial- und Präventivmedizin > Exposome Science (Probst-Hensch)
UniBasel Contributors:Schindler, Christian and Eeftens, Marloes and Ducret-Stich, Regina and Ineichen, Alex and Davey, Mark and Phuleria, Harish Chandra and Probst Hensch, Nicole and Tsai, Ming-Yi and Künzli, Nino
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Elsevier
ISSN:0160-4120
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:31 Oct 2017 09:38
Deposited On:03 Jul 2015 08:53

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