Coarse particulate matter concentrations from residential outdoor sites associated with the North Carolina Asthma and Children's Environment Studies (NC-ACES) |
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Institution: | 1. Department of Environmental Health, Harvard T.H. Chan School of Public Health, Harvard University, Boston, MA, USA;2. Department of Environmental Health Sciences, Columbia University Mailman School of Public Health, New York, NY, USA;3. Department of Forestry and Natural Resources, National Chiayi University, Chiayi, Taiwan;4. Department of Epidemiology, Harvard T.H. Chan School of Public Health, Harvard University, Boston, MA, USA;5. Cyprus International Institute for Environmental and Public Health, Cyprus University of Technology, Limassol, Cyprus;1. Center for Inflammation, Immunity & Infection, Institute for Biomedical Sciences, Georgia State University, Atlanta, GA, USA;2. Animal and Plant Quarantine Agency, Anyang City, Gyeonggi-do, Republic of Korea;3. Department of Medical Zoology, Kyung Hee University School of Medicine, Seoul, Republic of Korea;4. Department of Global Medical Science, Sungshin Women''s University, Seoul, Republic of Korea;5. Department of Pediatrics, Emory University, Atlanta, GA, USA;6. Children''s Healthcare of Atlanta, Atlanta, GA, USA;1. Texas State University, Texas Center for Geographic Information Science, Department of Geography, San Marcos, TX 78666, USA;2. Texas A&M Health Science Center School of Public Health, Department of Epidemiology & Biostatistics, College Station, TX 77843-1266, USA;3. Birth Defects Epidemiology and Surveillance Branch, Texas Department of State Health Services, PO Box 149347, MC 1964, Austin, TX 78714-9347, USA;4. South Dakota State University, Department of Geography, Brookings, SD 57007, USA;1. Department of Radiation Oncology, Henry Ford Health Systems, Detroit, Michigan;2. Department of Radiation Oncology, Wayne State University, Detroit, Michigan;3. Department of Radiation Oncology, Mayo Clinic Arizona, Phoenix, Arizona;4. Philips Healthcare, Cleveland, Ohio |
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Abstract: | Coarse particulate matter (PM concentration data from residential outdoor sites were collected using portable samplers as part of an exposure assessment for the North Carolina Asthma and Children's Environment Studies (NC-ACES). PM values were estimated using the differential between independent PM and PM collocated MiniVol measurements. Repeated daily 24-h integrated PM and PM residential outdoor monitoring was performed at a total of 26 homes during September 2003–June 2004 in the Research Triangle Park, NC area. This effort resulted in the collection of 73 total daily measurements. This assessment was conducted to provide data needed to investigate the association of exposures to coarse particle PM mass concentrations with observed human health effects. Potential instrument bias between the differential MiniVol methodology and a dichotomous sampler were investigated. Results indicated that minimal bias of PM mass concentration estimates (slope 0.8, intercept g m existed between the dichotomous and differential MiniVol procedures. Residential outdoor PM mass concentrations were observed to be highly variable across measurement days and ranged from 1.1 to g m (mean of g m. An average correlation coefficient of existed between residential outdoor PM mass concentrations and those obtained from the central ambient monitoring site. Temporal and spatial variability of PM mass concentrations during the study were observed and are described in this report. |
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