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Activity Number: 466
Type: Contributed
Date/Time: Wednesday, August 9, 2006 : 2:00 PM to 3:50 PM
Sponsor: Section on Statistics and the Environment
Abstract - #306429
Title: Statistical Challenges in Comparisons of Measured Indoor and Outdoor Exposures in an Urban Setting
Author(s): Sorina Eftim*+ and Alison Geyh and Patrick Breysse
Companies: Johns Hopkins Bloomberg School of Public Health and Johns Hopkins Bloomberg School of Public Health and Johns Hopkins Bloomberg School of Public Health
Address: 615 N. Wolfe Street, Baltimore, MD, 21205,
Keywords: air pollution ; environmental exposure ; inhalation exposure ; vehicle emissions ; linear models
Abstract:

Black carbon, PAHs and Particle size/counts and NOx's are of public health importance as indicators of community exposures to particulate matter. Relying on time resolved indoor and outdoor measurements, the Baltimore Traffic Study was designed to evaluate the impact of urban traffic on community mobile source pollutants. Communities are potentially exposed to a complex array of traffic-related pollutants emitted from a variety of vehicle types with differing tailpipe emissions and road dust re-suspension characteristics. Environmental concentrations are likely to be highly variable in space and time due to the underlying variability in their determinants, including meteorology, traffic (volume, class, and operating condition) and source proximity. The ensuing exposure and health threat is manifested at the intersection of these environmental concentration human time activity patterns.

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Revised April, 2006