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http://dx.doi.org/10.5572/KOSAE.2012.28.5.571

Land Use Regression Model for Assessing Exposure and Impacts of Air Pollutants in School Children  

Lee, Ji-Young (Department of Social and Preventive Medicine, Inha University Medical College)
Leem, Jong-Han (Department of Social and Preventive Medicine, Inha University Medical College)
Kim, Hwan-Cheol (Department of Social and Preventive Medicine, Inha University Medical College)
Hwang, Seung-Sik (Department of Social and Preventive Medicine, Inha University Medical College)
Jung, Dal-Young (Department of Social and Preventive Medicine, Inha University Medical College)
Park, Myung-Sook (Department of Social and Preventive Medicine, Inha University Medical College)
Kim, Jung-Ae (Department of Social and Preventive Medicine, Inha University Medical College)
Lee, Je-Joon (Department of Statistics, Inha University)
Park, No-Wook (Department of Geoinformatic Engineering, Inha University)
Kang, Sung-Chan (Department of Social and Preventive Medicine, Inha University Medical College)
Publication Information
Journal of Korean Society for Atmospheric Environment / v.28, no.5, 2012 , pp. 571-580 More about this Journal
Abstract
Epidemiologic studies of air pollution need accurate exposure assessments at unmonitored locations. A land use regression (LUR) model has been used successfully for predicting traffic-related pollutants, although its application has been limited to Europe, North America, and a few Asian region. Therefore, we modeled traffic-related pollutants by LUR then examined whether LUR models could be constructed using a regulatory monitoring network in Metropolitan area in Korea. We used the annual-mean nitrogen dioxide ($NO_2$) in 2010 in the study area. Geographic variables that are considered to predict traffic-related pollutants were classified into four groups: road type, traffic intensity, land use, and elevation. Using geographical variables, we then constructed a model to predict the monitored levels of $NO_2$. The mean concentration of $NO_2$ was 30.71 ppb (standard deviation of 5.95) respectively. The final regression model for the $NO_2$ concentration included five independent variables. The LUR models resulted in $R^2$ of 0.59. The mean concentration of $NO_2$ of elementary schools was 34.04 ppb (standard deviation of 5.22) respectively. The present study showed that even if we used regulatory monitoring air quality data, we could estimate $NO_2$ moderately well. These analyses confirm the validity of land use regression modeling to assign exposures in epidemiological studies, and these models may be useful tools for assessing health effects of long-term exposure to traffic related pollution.
Keywords
Land use regression; Traffic related air pollution; $NO_2$; Exposure; GIS; School;
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