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Pagonis, Demetrios [Verfasser:in]; Campuzano-Jost, Pedro [Verfasser:in]; Piel, Felix [Verfasser:in]; Tomsche, Laura [Verfasser:in]; Wisthaler, Armin [Verfasser:in]; Coggon, Matthew M. [Verfasser:in]; Gkatzelis, Georgios [Verfasser:in]; Halliday, Hannah S. [Verfasser:in]; Krechmer, Jordan E. [Verfasser:in]; Moore, Richard H. [Verfasser:in]; Thomson, David S. [Verfasser:in]; Warneke, Carsten [Verfasser:in]; Guo, Hongyu [Verfasser:in]; Wiggins, Elizabeth B. [Verfasser:in]; Jimenez, Jose L. [Verfasser:in]; Day, Douglas A. [Verfasser:in]; Schueneman, Melinda K. [Verfasser:in]; Brown, Wyatt L. [Verfasser:in]; Nault, Benjamin A. [Verfasser:in]; Stark, Harald [Verfasser:in]; Siemens, Kyla [Verfasser:in]; Laskin, Alex [Verfasser:in]

Airborne extractive electrospray mass spectrometry measurements of the chemical composition of organic aerosol

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  • Medientyp: E-Artikel
  • Titel: Airborne extractive electrospray mass spectrometry measurements of the chemical composition of organic aerosol
  • Beteiligte: Pagonis, Demetrios [Verfasser:in]; Campuzano-Jost, Pedro [Verfasser:in]; Piel, Felix [Verfasser:in]; Tomsche, Laura [Verfasser:in]; Wisthaler, Armin [Verfasser:in]; Coggon, Matthew M. [Verfasser:in]; Gkatzelis, Georgios [Verfasser:in]; Halliday, Hannah S. [Verfasser:in]; Krechmer, Jordan E. [Verfasser:in]; Moore, Richard H. [Verfasser:in]; Thomson, David S. [Verfasser:in]; Warneke, Carsten [Verfasser:in]; Guo, Hongyu [Verfasser:in]; Wiggins, Elizabeth B. [Verfasser:in]; Jimenez, Jose L. [Verfasser:in]; Day, Douglas A. [Verfasser:in]; Schueneman, Melinda K. [Verfasser:in]; Brown, Wyatt L. [Verfasser:in]; Nault, Benjamin A. [Verfasser:in]; Stark, Harald [Verfasser:in]; Siemens, Kyla [Verfasser:in]; Laskin, Alex [Verfasser:in]
  • Erschienen: Copernicus, 2021
  • Erschienen in: Atmospheric measurement techniques 14(2), 1545 - 1559 (2021). doi:10.5194/amt-14-1545-2021
  • Sprache: Englisch
  • DOI: https://doi.org/10.5194/amt-14-1545-2021
  • ISSN: 1867-8548; 1867-1381
  • Entstehung:
  • Anmerkungen: Diese Datenquelle enthält auch Bestandsnachweise, die nicht zu einem Volltext führen.
  • Beschreibung: We deployed an extractive electrospray ionization time-of-flight mass spectrometer (EESI-MS) for airborne measurements of biomass burning aerosol during the Fire Influence on Regional to Global Environments and Air Quality (FIREX-AQ) study onboard the NASA DC-8 research aircraft. Through optimization of the electrospray working solution, active control of the electrospray region pressure, and precise control of electrospray capillary position, we achieved 1 Hz quantitative measurements of aerosol nitrocatechol and levoglucosan concentrations up to pressure altitudes of 7 km. The EESI-MS response to levoglucosan and nitrocatechol was calibrated for each flight, with flight-to-flight calibration variability of 60 % (1σ). Laboratory measurements showed no aerosol size dependence in EESI-MS sensitivity below particle geometric diameters of 400 nm, covering 82 % of accumulation-mode aerosol mass during FIREX-AQ. We also present a first in-field intercomparison of EESI-MS with a chemical analysis of aerosol online proton-transfer-reaction mass spectrometer (CHARON PTR-MS) and a high-resolution Aerodyne aerosol mass spectrometer (AMS). EESI-MS and CHARON PTR-MS levoglucosan concentrations were well correlated, with a regression slope of 0.94 (R2=0.77). AMS levoglucosan-equivalent concentrations and EESI-MS levoglucosan showed a greater difference, with a regression slope of 1.36 (R2=0.96), likely indicating the contribution of other compounds to the AMS levoglucosan-equivalent measurement. The total EESI-MS signal showed correlation (R2=0.9) with total organic aerosol measured by AMS, and the EESI-MS bulk organic aerosol sensitivity was 60 % of the sensitivity to levoglucosan standards.
  • Zugangsstatus: Freier Zugang