Developing a Simplified Method of Measuring Ultrafine Particulate Matter Dose Concentrations for Diesel Emissions

Diesel particulate matter, primarily ultrafine particles (UFP), defined as particles smaller than 0.1 µm, are released by diesel-powered vehicles, especially those used in heavy-duty hauling, and are linked to serious health hazards. While much of the existing research on traffic-related air pollution focuses on urban environments, limited attention has been paid to how complex the topography influences the concentration of UFPs, particularly in areas with significant truck traffic. With a focus on Morgantown, West Virginia, an area distinguished by steep topography, this study investigates how travel over two different terrain conditions effect UFP concentrations close to roadways. Specifically, we sought to determine if truck count can be used as a surrogate allowing for varying topography for the concentration of UFPs. This study shows that “TRUCK COUNT” does result in a linear relationship and yields a possible surrogate measure of lung dose of UFP number concentration.