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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 (författare)
Gothenburg University,Göteborgs universitet,University of Gothenburg,Institutionen för kemi och molekylärbiologi,Department of Chemistry and Molecular Biology,Department of Chemistry and Molecular Biology, University of Gothenburg, Gothenburg 41296, Sweden
Thomsen, Ditte (författare)
Department of Chemistry, Aarhus University, Aarhus 8000, Denmark
Wu, Cheng, 1985 (författare)
Gothenburg University,Göteborgs universitet,University of Gothenburg,Institutionen för kemi och molekylärbiologi,Department of Chemistry and Molecular Biology,Department of Chemistry and Molecular Biology, University of Gothenburg, Gothenburg 41296, Sweden
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Priestley, Michael (författare)
Gothenburg University,Göteborgs universitet,University of Gothenburg,Institutionen för kemi och molekylärbiologi,Department of Chemistry and Molecular Biology,Department of Chemistry and Molecular Biology, University of Gothenburg, Gothenburg 41296, Sweden
Iversen, Emil Mark (författare)
Department of Chemistry, Aarhus University, Aarhus 8000, Denmark
Tygesen Sko̷nager, Jane (författare)
Department of Chemistry, Aarhus University, Aarhus 8000, Denmark
Luo, Yuanyuan (författare)
Institute for Atmospheric and Earth System Research/Physics, University of Helsinki, Helsinki 00014, Finland
Ehn, Mikael (författare)
Institute for Atmospheric and Earth System Research/Physics, University of Helsinki, Helsinki 00014, Finland
Roldin, Pontus (författare)
Lund University,Lunds universitet,MERGE: ModElling the Regional and Global Earth system,Centrum för miljö- och klimatvetenskap (CEC),Naturvetenskapliga fakulteten,Förbränningsfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Kärnfysik,LTH profilområde: Aerosoler,LTH profilområden,LU profilområde: Ljus och material,Lunds universitets profilområden,LU profilområde: Naturbaserade framtidslösningar,Centre for Environmental and Climate Science (CEC),Faculty of Science,Combustion Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,Nuclear physics,Faculty of Engineering, LTH,LTH Profile Area: Aerosols,LTH Profile areas,Faculty of Engineering, LTH,LU Profile Area: Light and Materials,Lund University Profile areas,LU Profile Area: Nature-based future solutions,IVL Swedish Environmental Research Institute,Department of Physics, Lund University, Lund 22100, Sweden;IVL Swedish Environmental Institute, Malmö21119, Sweden
Pedersen, Henrik B. (författare)
Department of Physics and Astronomy, Aarhus University, Aarhus 8000, Denmark
Bilde, Merete (författare)
Department of Chemistry, Aarhus University, Aarhus 8000, Denmark
Glasius, Marianne (författare)
Department of Chemistry, Aarhus University, Aarhus 8000, Denmark
Hallquist, Mattias, 1969 (författare)
Gothenburg University,Göteborgs universitet,University of Gothenburg,Institutionen för kemi och molekylärbiologi,Department of Chemistry and Molecular Biology,Department of Chemistry and Molecular Biology, University of Gothenburg, Gothenburg 41296, Sweden
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 (creator_code:org_t)
Malmö : IVL Svenska Miljöinstitutet, 2024
2024
Engelska.
Ingår i: Journal of Physical Chemistry A. - Malmö : IVL Svenska Miljöinstitutet. - 1089-5639 .- 1520-5215. ; 128:5, s. 918-928
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  • Tidskriftsartikel (refereegranskat)
Abstract Ämnesord
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  • 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.

Ämnesord

NATURVETENSKAP  -- Geovetenskap och miljövetenskap -- Meteorologi och atmosfärforskning (hsv//swe)
NATURAL SCIENCES  -- Earth and Related Environmental Sciences -- Meteorology and Atmospheric Sciences (hsv//eng)
NATURVETENSKAP  -- Kemi -- Fysikalisk kemi (hsv//swe)
NATURAL SCIENCES  -- Chemical Sciences -- Physical Chemistry (hsv//eng)

Nyckelord

Secondary Organic Aerosol; Δ3-carene

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