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Gas-to-Particle Partitioning of Products from Ozonolysis of Δ3-Carene and the Effect of Temperature and Relative Humidity.
Li, Linjie; Thomsen, Ditte; Wu, Cheng; Priestley, Michael; Iversen, Emil Mark; Tygesen Sko Nager, Jane; Luo, Yuanyuan; Ehn, Mikael; Roldin, Pontus; Pedersen, Henrik B; Bilde, Merete; Glasius, Marianne; Hallquist, Mattias.
Afiliación
  • Li L; Department of Chemistry and Molecular Biology, University of Gothenburg, Gothenburg 41296, Sweden.
  • Thomsen D; Department of Chemistry, Aarhus University, Aarhus 8000, Denmark.
  • Wu C; Department of Chemistry and Molecular Biology, University of Gothenburg, Gothenburg 41296, Sweden.
  • Priestley M; Department of Chemistry and Molecular Biology, University of Gothenburg, Gothenburg 41296, Sweden.
  • Iversen EM; Department of Chemistry, Aarhus University, Aarhus 8000, Denmark.
  • Tygesen Sko Nager J; Department of Chemistry, Aarhus University, Aarhus 8000, Denmark.
  • Luo Y; Institute for Atmospheric and Earth System Research/Physics, University of Helsinki, Helsinki 00014, Finland.
  • Ehn M; Institute for Atmospheric and Earth System Research/Physics, University of Helsinki, Helsinki 00014, Finland.
  • Roldin P; Department of Physics, Lund University, Lund 22100, Sweden.
  • Pedersen HB; IVL Swedish Environmental Institute, Malmö21119, Sweden.
  • Bilde M; Department of Physics and Astronomy, Aarhus University, Aarhus 8000, Denmark.
  • Glasius M; Department of Chemistry, Aarhus University, Aarhus 8000, Denmark.
  • Hallquist M; Department of Chemistry, Aarhus University, Aarhus 8000, Denmark.
J Phys Chem A ; 128(5): 918-928, 2024 Feb 08.
Article en En | MEDLINE | ID: mdl-38293769
ABSTRACT
Formation of oxidized products from Δ3-carene (C10H16) ozonolysis and their gas-to-particle partitioning at three temperatures (0, 10, and 20 °C) under dry conditions (<2% RH) and also at 10 °C under humid (78% RH) conditions were studied using a time-of-flight chemical ionization mass spectrometer (ToF-CIMS) combined with a filter inlet for gases and aerosols (FIGAERO). The Δ3-carene ozonolysis products detected by the FIGAERO-ToF-CIMS were dominated by semivolatile organic compounds (SVOCs). The main effect of increasing temperature or RH on the product distribution was an increase in fragmentation of monomer compounds (from C10 to C7 compounds), potentially via alkoxy scission losing a C3 group. The equilibrium partitioning coefficient estimated according to equilibrium partitioning theory shows that the measured SVOC products distribute more into the SOA phase as the temperature decreases from 20 to 10 and 0 °C and for most products as the RH increases from <2 to 78%. The temperature dependency of the saturation vapor pressure (above an assumed liquid state), derived from the partitioning method, also allows for a direct way to obtain enthalpy of vaporization for the detected species without accessibility of authentic standards of the pure substances. This method can provide physical properties, beneficial for, e.g., atmospheric modeling, of complex multifunctional oxidation products.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Phys Chem A Asunto de la revista: QUIMICA Año: 2024 Tipo del documento: Article País de afiliación: Suecia Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Phys Chem A Asunto de la revista: QUIMICA Año: 2024 Tipo del documento: Article País de afiliación: Suecia Pais de publicación: Estados Unidos