On-road gasoline vehicles are a major source of secondary organic aerosol(SOA) in urban areas.We investigated SOA formation by oxidizing dilute,ambient-level exhaust concentrations from a fleet of on-
Organic aerosols can exist as Organic aerosols can exist as aqueous droplets,with variable water content depending on their composition and environmental conditions(e.g.,relative humidity(RH)).
Highly oxidized multifunctional(HOM) species that are generated in the gas phase from the oxidation of biogenic and anthropogenic precursors play an important role in new particle formation and growth