title: Organic aerosol yields from α-pinene oxidation: bridging the gap between first-generation yields and aging chemistry.
abstract: Secondary organic aerosol formation from volatile precursors can be thought of as a succession of generations of reaction products. Here, we constrain first-generation SOA formation from the α-pinene + OH reaction and also study SOA formation from α-pinene ozonolysis carried out without an OH scavenger. SOA yields from OH oxidation of α-pinene are significantly higher than SOA yields from ozonolysis including an OH scavenger, and the SOA mass yields for unscavenged ozonolysis generally fall within the range of mass yields for α-pinene ozonolysis under various conditions. Taken together, first-generation product yields parametrized with a volatility basis set fit provide a starting point for atmospheric models designed to simulate both the production and subsequent aging of SOA from this important terpene.
authors.affiliation: Carnegie Mellon University Department of Chemical Engineering, 5000 Forbes Ave Pittsburgh, Pennsylvania 15213, USA.
authors.forename: Kaytlin M
authors.initials: KM
authors.lastname: Henry
authors.forename: Theresa
authors.initials: T
authors.lastname: Lohaus
authors.forename: Neil M
authors.initials: NM
authors.lastname: Donahue
mesh_terms: D000336:Aerosols / Q000737:chemistry; D000393:Air Pollutants / Q000737:chemistry*; D000081008:Bicyclic Monoterpenes; D017665:Hydroxyl Radical / Q000737:chemistry; D008962:Models, Theoretical; D039821:Monoterpenes / Q000737:chemistry*; D010084:Oxidation-Reduction; D010126:Ozone / Q000737:chemistry*; D013997:Time Factors
chemical_list: D000336:Aerosols; D000393:Air Pollutants; D000081008:Bicyclic Monoterpenes; D039821:Monoterpenes; D017665:Hydroxyl Radical; D010126:Ozone; C005451:alpha-pinene