Mobile source contributions to U.S. air toxics

Conference · Tue Dec 30 23:00:00 EST 1997

OSTI ID:353499

Paul, R T ^[1]; Pezda, S A ^[2]

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1. American Automobile Manufacturers Association, Detroit, MI (United States)
2. Ford Motor Co., Dearborn, MI (United States)

On-road motor vehicle emissions include several components which are considered hazardous air pollutants (HAPs) under Title III, section 112, of the Clean Air Act. Although section 112 focuses on stationary sources of HAPs, it is important to evaluate all potentially significant sources of HAPs to urban air. This paper will utilize the most recent data available on emission factors, tail-pipe analysis, fuel specifications, dispersion modeling and other information to characterize on-road mobile source contributions to urban air toxics. In particular, benzene, 1,3-butadiene and formaldehyde emissions will be evaluated. Estimates of exposure to urban populations will also be made based on emission levels, dispersion modeling and ambient concentrations, including limitations and uncertainties. A perspective will also be provided with respect to vehicle air toxic emissions and indoor versus outdoor exposures.

• OSTI ID: 353499
• Report Number(s): CONF-970677--
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
AIR POLLUTION
BENZENE
BUTADIENE
EMISSION
EXHAUST GASES
FORMALDEHYDE
MATHEMATICAL MODELS
MOBILE POLLUTANT SOURCES
URBAN AREAS
VEHICLES