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Gkatzelis, Georgios [Author]; Hohaus, Thorsten [Author]; Wegener, Robert [Author]; Kaminski, Martin [Author]; Holzinger, Rupert [Author]; Wisthaler, Armin [Author]; Kiendler-Scharr, Astrid [Author]; Tillmann, Ralf [Author]; Gensch, Iulia [Author]; Müller, Markus [Author]; Eichler, Philipp [Author]; Xu, Kang-Ming [Author]; Schlag, Patrick [Author]; Schmitt, Sebastian H. [Author]; Yu, Zhujun [Author]

Gas-to-particle partitioning of major biogenic oxidation products: a study on freshly formed and aged biogenic SOA

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  • Media type: E-Article
  • Title: Gas-to-particle partitioning of major biogenic oxidation products: a study on freshly formed and aged biogenic SOA
  • Contributor: Gkatzelis, Georgios [Author]; Hohaus, Thorsten [Author]; Wegener, Robert [Author]; Kaminski, Martin [Author]; Holzinger, Rupert [Author]; Wisthaler, Armin [Author]; Kiendler-Scharr, Astrid [Author]; Tillmann, Ralf [Author]; Gensch, Iulia [Author]; Müller, Markus [Author]; Eichler, Philipp [Author]; Xu, Kang-Ming [Author]; Schlag, Patrick [Author]; Schmitt, Sebastian H. [Author]; Yu, Zhujun [Author]
  • imprint: EGU, 2018
  • Published in: Atmospheric chemistry and physics 18(17), 12969 - 12989 (2018). doi:10.5194/acp-18-12969-2018
  • Language: English
  • DOI: https://doi.org/10.5194/acp-18-12969-2018
  • ISSN: 1680-7324; 1680-7316
  • Origination:
  • Footnote: Diese Datenquelle enthält auch Bestandsnachweise, die nicht zu einem Volltext führen.
  • Description: Secondary organic aerosols (SOAs) play a key role in climate change and air quality. Determining the fundamental parameters that distribute organic compounds between the phases is essential, as atmospheric lifetime and impacts change drastically between the gas and particle phase. In this work, gas-to-particle partitioning of major biogenic oxidation products was investigated using three different aerosol chemical characterization techniques. The aerosol collection module, the collection thermal desorption unit, and the chemical analysis of aerosols online are different aerosol sampling inlets connected to a proton-transfer reaction time-of-flight mass spectrometer (ACM-PTR-ToF-MS, TD-PTR-ToF-MS, and CHARON-PTR-ToF-MS, respectively, referred to hereafter as ACM, TD, and CHARON). These techniques were deployed at the atmosphere simulation chamber SAPHIR to perform experiments on the SOA formation and aging from different monoterpenes (β-pinene, limonene) and real plant emissions (Pinus sylvestris L.). The saturation mass concentration C* and thus the volatility of the individual ions was determined based on the simultaneous measurement of their signal in the gas and particle phase.A method to identify and exclude ions affected by thermal dissociation during desorption and ionic dissociation in the ionization chamber of the proton-transfer reaction mass spectrometer (PTR-MS) was developed and tested for each technique. Narrow volatility distributions with organic compounds in the semi-volatile (SVOCs – semi-volatile organic compounds) to intermediate-volatility (IVOCs – intermediate-volatility organic compounds) regime were found for all systems studied. Despite significant differences in the aerosol collection and desorption methods of the proton-transfer-reaction (PTR)-based techniques, a comparison of the C* values obtained with different techniques was found to be in good agreement (within 1 order of magnitude) with deviations explained by the different operating conditions of the PTR-MS.The C* of the ...
  • Access State: Open Access