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J Expo Anal Environ Epidemiol

Title:		"Relationship of Indoor, Outdoor and Personal Air (RIOPA) study: study design, methods and quality assurance/control results"
Author(s):		Weisel CP; Zhang J; Turpin BJ; Morandi MT; Colome S; Stock TH; Spektor DM; Korn L; Winer A; Alimokhtari S; Kwon J; Mohan K; Harrington R; Giovanetti R; Cui W; Afshar M; Maberti S; Shendell D;
Address:		"Environmental and Occupational Health Sciences Institute, 170 Frelinghuysen Road, Piscataway, NJ 08854, USA. weisel@eohsi.rutgers.edu"
Journal Title:		J Expo Anal Environ Epidemiol
Year:		2005
Volume:		15
Issue:		2
Page Number:		123 - 137
DOI:		10.1038/sj.jea.7500379
ISSN/ISBN:		1053-4245 (Print) 1053-4245 (Linking)
Abstract:		"The Relationship of Indoor, Outdoor and Personal Air (RIOPA) Study was undertaken to evaluate the contribution of outdoor sources of air toxics, as defined in the 1990 Clean Air Act Amendments, to indoor concentrations and personal exposures. The concentrations of 18 volatile organic compounds (VOCs), 17 carbonyl compounds, and fine particulate matter mass (PM(2.5)) were measured using 48-h outdoor, indoor and personal air samples collected simultaneously. PM2.5 mass, as well as several component species (elemental carbon, organic carbon, polyaromatic hydrocarbons and elemental analysis) were also measured; only PM(2.5) mass is reported here. Questionnaires were administered to characterize homes, neighborhoods and personal activities that might affect exposures. The air exchange rate was also measured in each home. Homes in close proximity (<0.5 km) to sources of air toxics were preferentially (2:1) selected for sampling. Approximately 100 non-smoking households in each of Elizabeth, NJ, Houston, TX, and Los Angeles, CA were sampled (100, 105, and 105 respectively) with second visits performed at 84, 93, and 81 homes in each city, respectively. VOC samples were collected at all homes, carbonyls at 90% and PM(2.5) at 60% of the homes. Personal samples were collected from nonsmoking adults and a portion of children living in the target homes. This manuscript provides the RIOPA study design and quality control and assurance data. The results from the RIOPA study can potentially provide information on the influence of ambient sources on indoor air concentrations and exposure for many air toxics and will furnish an opportunity to evaluate exposure models for these compounds"
Keywords:		"Air Movements Air Pollutants/*analysis Air Pollution, Indoor/*analysis Environmental Monitoring Humans Organic Chemicals/analysis Particle Size Quality Control Reproducibility of Results Research Design Volatilization;"
Notes:		"MedlineWeisel, Clifford P Zhang, Junfeng Turpin, Barbara J Morandi, Maria T Colome, Steven Stock, Thomas H Spektor, Dalia M Korn, Leo Winer, Arthur Alimokhtari, Shahnaz Kwon, Jaymin Mohan, Krishnan Harrington, Robert Giovanetti, Robert Cui, William Afshar, Masoud Maberti, Silvia Shendell, Derek eng ES05022/ES/NIEHS NIH HHS/ Research Support, N.I.H., Extramural Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. Research Support, U.S. Gov't, P.H.S. England 2004/06/24 J Expo Anal Environ Epidemiol. 2005 Mar; 15(2):123-37. doi: 10.1038/sj.jea.7500379"