October 24, 2023
Journal Article
Nonequilibrium Behavior in Isoprene Secondary Organic Aerosol
Abstract
Recent studies have shown that instantaneous gas-particle equilibrium partitioning assumption fails to predict SOA formation, even at high relative humidity (~85%), and photochemical aging seems to be one driving factor. In this study, we probed the minimum aging timescale required to observe non-equilibrium partitioning of semivolatile organic compounds (SVOCs) between the gas- and aerosol-phase at ~50% RH. Seed isoprene SOA was generated by photo-oxidation in the presence of effloresced ammonium sulfate seeds atPublished: October 24, 2023