| Title: | Contribution of ozone to airborne aldehyde formation in Paris homes |
| Author(s): | Ranciere F; Dassonville C; Roda C; Laurent AM; Le Moullec Y; Momas I; |
| Address: | "Universite Paris Descartes EA 4064, Faculte des Sciences Pharmaceutiques et Biologiques, Laboratoire Sante Publique et Environnement, 4 avenue de l'Observatoire, 75006 Paris, France" |
| DOI: | 10.1016/j.scitotenv.2011.04.058 |
| ISSN/ISBN: | 1879-1026 (Electronic) 0048-9697 (Linking) |
| Abstract: | "Indoor aldehydes may result from ozone-initiated chemistry, mainly documented by experimental studies. As part of an environmental investigation included in the PARIS birth cohort, the aim of this study was to examine ozone contribution to airborne aldehyde formation in Paris homes. Formaldehyde, acetaldehyde and hexaldehyde levels, as well as styrene, nitrogen dioxide and nicotine concentrations, comfort parameters and carbon dioxide levels, were measured twice during the first year of life of the babies. Ambient ozone concentrations were collected from the closest background station of the regional air monitoring network. Traffic-related nitrogen oxide concentrations in front of the dwellings were estimated by an air pollution dispersion model. Home characteristics and families' way of life were described by questionnaires. Stepwise multiple linear regression models were used to link aldehyde levels with ambient ozone concentrations and a few aldehyde precursors involved in oxidation reactions, adjusting for other indoor aldehyde sources, comfort parameters and traffic-related nitrogen oxides. A 4 and 11% increase in formaldehyde and hexaldehyde levels was pointed out when 8-hour ozone concentrations increased by 20 mug/m(3). The influence of potential precursors such as indoor styrene level and frequent use of air fresheners, containing unsaturated volatile organic compounds as terpenes, was also found. Thus, our results suggest that ambient ozone can significantly impact indoor air quality, especially with regard to formaldehyde and hexaldehyde levels" |
| Keywords: | "Air Pollutants/analysis Air Pollution, Indoor/*analysis Aldehydes/*analysis Environmental Monitoring/*methods *Housing/standards Ozone/*analysis Paris Vehicle Emissions/analysis;" |
| Notes: | "MedlineRanciere, Fanny Dassonville, Claire Roda, Celina Laurent, Anne-Marie Le Moullec, Yvon Momas, Isabelle eng Research Support, Non-U.S. Gov't Netherlands 2011/07/29 Sci Total Environ. 2011 Sep 15; 409(20):4480-3. doi: 10.1016/j.scitotenv.2011.04.058. Epub 2011 Jul 27" |
