Analysis of particulate-matter dispersion near urban roadways. A summary. Final report

Technical Report · Wed Jul 01 04:00:00 EDT 1992

OSTI ID:7225525

Balogh, M; Mannering, F

Particulate matter and its dispersion near urban roadways has become an issue of increasing concern because of the possible health risks to humans associated with the inhalation of small particulates. Despite the potential health risk, little is known about the concentration of particulates near urban roadways or the particulates emission rates of various vehicles. This research focused on particulate matter smaller than 2.5 micrometers (microns), typically denoted PM(sub 2.5), because of the high potential health risks of such small particles. Data were collected along roadways on the University of Washington campus. The results of the data collection and subsequent statistical analysis revealed, as expected, that urban buses are far and away the major source of particulate emissions and that buses with low exhaust pipes are more of a threat to pedestrian traffic. More interestingly, the findings suggest that procedure AP-42 for calculating particulate matter near urban roadways is grossly inaccurate, producing values that are one to two orders of magnitude higher than actually observed PM(sub 2.5) values.

• Research Organization: Washington State Transportation Center, Seattle, WA (United States)
• OSTI ID: 7225525
• Report Number(s): PB-92-239078/XAB
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540120* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
AIR POLLUTION
AIR POLLUTION MONITORING
DATA PROCESSING
ECOLOGICAL CONCENTRATION
ENVIRONMENTAL TRANSPORT
EXHAUST GASES
FLUIDS
GASEOUS WASTES
GASES
MASS TRANSFER
MATHEMATICAL MODELS
MATHEMATICS
MONITORING
PARTICLES
PARTICULATES
POLLUTION
PROCESSING
REGRESSION ANALYSIS
ROADS
STATISTICS
URBAN AREAS
VEHICLES
WASTES