Relationships among personal,indoor and outdoor NO2 measurements |
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Authors: | Douglas W. Dockery John D. Spengler Margaret P. Reed James Ware |
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Affiliation: | 1. Department of Physiology, Harvard School of Public Health, 665 Huntington Avenue, Boston, Massachusetts 02115, USA;2. Department of Environmental Health Sciences, Harvard School of Public Health, 665 Huntington Avenue, Boston, Massachusetts 02115, USA;3. Department of Biostatistics, Harvard School of Public Health, 665 Huntington Avenue, Boston, Massachusetts 02115, USA |
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Abstract: | Using integrating NO2 diffusion dosimeters, personal, indoor and outdoor exposures were measured for nine families in Topeka, Kansas. NO2 exposures in homes that used gas for cooking were clearly different from those in homes that used electricity. The gas-cooking homes had indoor levels three times the outdoor levels. Members of the gas-cooking households had levels twice those of electric-cooking families and twice the outdoor levels. A linear model that includes outdoor concentrations and stove types explains 77% of the variance in observed NO2 exposure. The differential NO2 exposures in homes with and without gas stoves should be considered in epidemiologic studies of the health effects of air pollution. |
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