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Influence of ambient (outdoor) sources on residential indoor and personal PM2.5 concentrations: Analyses of RIOPA data
The mean of the distribution of ambient contributions across study homes agreed well for themass balance and RCS models, but the distribution was somewhat broader when calculated using the mass balance model with measured air exchange rates. Expand
Polycyclic aromatic hydrocarbons in the indoor and outdoor air of three cities in the U.S.
The indoor and outdoor concentrations of 30 polycyclic aromatic hydrocarbons were measured in 55 nonsmoking residences in three urban areas during June 1999-May 2000 and showed that indoor sources had a significant effect on indoor concentrations of 3-ring PAHs and a smaller effect on 4-rings and that outdoor sources dominated the indoor concentrations. Expand
Personal exposure to nitrogen dioxide in the Los Angeles Basin.
A large scale study of human exposure to nitrogen dioxide (NO2) was conducted in the Los Angeles Basin, the only metropolitan area in the United States that exceeds the NO2 NAAQS. Data are availableExpand
Relationships of Indoor, Outdoor, and Personal Air (RIOPA). Part I. Collection methods and descriptive analyses.
The results show that indoor sources dominated personal and indoor air concentrations of many measured VOCs and carbonyl compounds, and associations derived from or models based on this data set that may link the influence of outdoor sources with indoorAir toxics and PM2.5 can be relevant to other urban settings. Expand
Relationship of Indoor, Outdoor and Personal Air (RIOPA) study: study design, methods and quality assurance/control results
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. Expand
Characterizing the range of children's air pollutant exposure during school bus commutes
Type of bus, traffic congestion levels, and encounters with other diesel vehicles contributed to high exposure variability between runs, and pollutants tended to be higher on urban routes compared to the rural/suburban route, and substantially higher inside the bus cabins compared to ambient measurements. Expand
Estimating contributions of indoor and outdoor sources to indoor carbonyl concentrations in three urban areas of the United States
Abstract Exposure to carbonyls (aldehydes and ketones) can produce adverse health effects. It is known that various sources of carbonyls are often present inside residences but little is known aboutExpand
Valuing the health benefits of clean air.
An assessment of health effects due to ozone and particulate matter (PM10) suggests that each of the 12 million residents of the South Coast Air Basin of California experiences ozone-related symptomsExpand
Measuring self-pollution in school buses using a tracer gas technique
A potentially important, but inadequately studied, source of children’s exposure to pollutants during school bus commutes is the introduction of a bus’s own exhaust into the passenger compartment. WeExpand
California residential air exchange rates and residence volumes.
Air exchange rate data from two residential indoor air quality studies are presented and data distributions presented for heating and cooking appliances are useful for modeling the impact of indoor sources specific for those appliance types. Expand