Yifang Zhu

TL;DR: Data showed that both atmospheric dispersion and coagulation contributed to the rapid decrease in particle number concentration and change in particle size distribution with increasing distance from the freeway.

TL;DR: In this article, the authors found that the relative concentration of CO, BC and particle number decreased exponentially and tracked each other well as one moves away from the freeway, and both atmospheric dispersion and coagulation appeared to contribute to the rapid decrease in particle number concentration and change in particle size distribution with increasing distance from a freeway.

TL;DR: In this paper, the authors analyzed the evolution of particle number distributions near the 405 and 710 freeways in Los Angeles, California, in both summer and winter, and then simulated by a multi-component sectional aerosol dynamic model.

TL;DR: In-cabin and outdoor measurements of particle number concentration and size distributions while driving three vehicles on Los Angeles freeways found that for an hour daily commute exposure, the in-vehicle microenvironment contributes approximately 10-50% of people's daily exposure to UFP from traffic.

TL;DR: In this paper, the authors conducted systematic measurements of the concentration and size distribution of ultrafine particles in the vicinity of Interstate 405 (mostly gasoline traffic) and Interstate 710 (large proportion of heavy-duty diesel traffic) in Los Angeles during the summer of 2001.