Measurement of Roadway PM10 Emission Rates Using Tracer Techniques

摘要

In the work, stationary and mobile point source tracer release techniques wereused to determine PM10 emission rates from 4-lane commercia/residential paved roads under sanded and unsanded conditions, and from unpaved roads relative to site specific vehicular and ambient parameters. Measured stress (4+ lanes; > or = to 10,000 vehicles/day) emission factors for unsanded and sanded roads were respectively 40% and 10% lower than the EPA approved reference value. Preliminary results indicate a consistent relationship between PM10 and relative humidity under unsanded conditions. Evidence suggests that street sweeping has a negligible effect on PM10 emission reduction. Considerable uncertainties were observed with the empirical emission factor equation.