Particulate Emission Rates for Unpaved Shoulders along a Paved Road
- 1 May 1998
- journal article
- research article
- Published by Informa UK Limited in Journal of the Air & Waste Management Association
- Vol. 48 (5), 398-407
- https://doi.org/10.1080/10473289.1998.10463694
Abstract
This paper reports the first empirical estimate of particle emissions from unpaved shoulders along paved roads.1 Its objectives are to develop and demonstrate an emission rate measurement methodology that can be applied in different areas; identify the mechanisms that suspend dust from unpaved shoulders and the observables related to this suspension process; and quantify PM10 mass emissions in the form of an emission rate. To achieve these objectives, fast-response observations from nephelometers and a sonic anemometer were used to characterize shortlived dust plumes generated by passing vehicles. In addition, detailed soil surface measurements determined the mechanical properties of the shoulder surfaces. Large traffic-induced turbulence events that led to significant dust entrainment were almost exclusively caused by “large” vehicles such as trucks, semis, and vehicles pulling trailers, all traveling 50-65 mph. PM10 emission rates for these large, fast-traveling vehicles were determined to be 8 ± 4 grams per vehicle kilometer traveled under dry conditions. Emissions due to smaller vehicles such as cars, vans, and sport utility vehicles were negligible for normal on-road driving. These results indicate that the majority of PM10 emissions from unpaved shoulders is caused by relatively few vehicles.Keywords
This publication has 10 references indexed in Scilit:
- Descriptive analysis of PM2.5 and PM10 at regionally representative locations during SJVAQS/AUSPEXAtmospheric Environment, 1996
- Sensitivity of estimated light extinction coefficients to model assumptions and measurement errorsAtmospheric Environment, 1995
- Size-resolved measurements of light scattering by ambient particles in the southwestern U.S.A.Atmospheric Environment, 1994
- Model Experiments of the Resuspension Caused by Road TrafficAerosol Science and Technology, 1993
- PM10and PM2.5Compositions in California's San Joaquin ValleyAerosol Science and Technology, 1993
- PM10 source apportionment in California's San Joaquin valleyAtmospheric Environment. Part A. General Topics, 1992
- Optical characteristics of fine and coarse particulates at Grand Canyon, ArizonaAtmospheric Environment (1967), 1984
- Threshold friction velocities and rupture moduli for crusted desert soils for the input of soil particles into the airJournal of Geophysical Research: Oceans, 1982
- Beiträge zur Optik trüber Medien, speziell kolloidaler MetallösungenAnnalen der Physik, 1908
- IV. On the dynamical theory of incompressible viscous fluids and the determination of the criterionPhilosophical Transactions of the Royal Society of London. (A.), 1895