Photochemical aging of α-pinene secondary organic aerosol: effects of OH radical sources and photolysis.

@article{Henry2012PhotochemicalAO,
  title={Photochemical aging of α-pinene secondary organic aerosol: effects of OH radical sources and photolysis.},
  author={Kaytlin M Henry and Neil M Donahue},
  journal={The journal of physical chemistry. A},
  year={2012},
  volume={116 24},
  pages={5932-40}
}
This study addresses photochemical aging of secondary organic aerosol (SOA) produced from α-pinene ozonolysis. The SOA is aged via hydroxyl radical (OH) reactions with first-generation vapors and UV photolysis. OH radicals are created through tetramethylethylene ozonolysis, HOOH photolysis, or HONO photolysis, sources that vary in OH concentration and the presence or absence of UV illumination. Aging strongly influences observed SOA mass concentrations, but the behavior is complex. In the dark… CONTINUE READING