title: Secondary organic aerosol formation from the irradiation of simulated automobile exhaust.
abstract: A laboratory study was conducted to evaluate the potential for secondary organic aerosol formation from emissions from automotive exhaust. The goal was to determine to what extent photochemical oxidation products of these hydrocarbons contribute to secondary organic aerosol (SOA) and how well their formation is described by recently developed models for SOA formation. The quality of a surrogate was tested by comparing its reactivity with that from irradiations of authentic automobile exhaust. Experiments for secondary particle formation using the surrogate were conducted in a fixed volume reactor operated in a dynamic mode. The mass concentration of the aerosol was determined from measurements of organic carbon collected on quartz filters and was corrected for the presence of hydrogen, nitrogen, and oxygen atoms in the organic species. A functional group analysis of the aerosol made by Fourier transform infrared (FTIR) spectroscopy indicated
authors.affiliation: ManTech Environmental Technology, Inc, Research Triangle Park, North Carolina, USA. kleindienst.tad@epa.gov
authors.forename: T E
authors.initials: TE
authors.lastname: Kleindienst
authors.forename: E W
authors.initials: EW
authors.lastname: Corse
authors.forename: W
authors.initials: W
authors.lastname: Li
authors.forename: C D
authors.initials: CD
authors.lastname: McIver
authors.forename: T S
authors.initials: TS
authors.lastname: Conver
authors.forename: E O
authors.initials: EO
authors.lastname: Edney
authors.forename: D J
authors.initials: DJ
authors.lastname: Driscoll
authors.forename: R E
authors.initials: RE
authors.lastname: Speer
authors.forename: W S
authors.initials: WS
authors.lastname: Weathers
authors.forename: S B
authors.initials: SB
authors.lastname: Tejada
mesh_terms: D000336:Aerosols; D002947:Cities; D006841:Hydrocarbons, Aromatic / Q000737:chemistry*; D009930:Organic Chemicals; D010084:Oxidation-Reduction; D010316:Particle Size; D010777:Photochemistry; D017550:Spectroscopy, Fourier Transform Infrared; D014466:Ultraviolet Rays; D001335:Vehicle Emissions
chemical_list: D000336:Aerosols; D006841:Hydrocarbons, Aromatic; D009930:Organic Chemicals; D001335:Vehicle Emissions