Distinct Ultrafine Particle Profiles Associated with Aircraft and Roadway Traffic
Elena Austin, Jianbang Xiang, Timothy Gould, Jeffry H. Shirai, Sukyong Yun, Michael G. Yost, Timothy V. Larson, Edmund Seto
Abstract
, and black carbon (BC) concentrations, as well as UFP size distributions. Primary findings were that UFPs were associated with both roadway traffic and aircraft sources, with the highest UFP counts found on the major roadway (I-5). Total concentrations of UFPs alone (10-1000 nm) did not distinguish roadway and aircraft features. However, key differences existed in the particle size distribution and the black carbon concentration for roadway and aircraft features. These differences can help distinguish between the spatial impact of roadway traffic and aircraft UFP emissions using a combination of mobile monitoring and standard statistical methods.