SIC SP-AMS Inter-comparison Campaign AMEWU A. MENSAH1, Joel C. Corbin1, Sanna Saarikoski2, Axel Eriksson3, Raphael Färber4, Martin Gysel4, Berko Sierau1, Manuel Abegglen1, Veronika Hladnik1, André Welti1, and Ulrike Lohmann1 1Institute for Atmospheric and Climate Science, ETH Zurich, 8092 Zurich, Switzerland Meteorological Institute/Aerosol Research, Erik Palménin aukio 1, 00560 Helsinki, Finland 3Division of Nuclear Physics, Department of Physics, Lund University, Box 118, 22100 Lund, Sweden 4Laboratory of Atmospheric Chemistry, Paul Scherrer Institute, 5232 Villigen PSI, Switzerland 2Finnish 1 Soot Particle (SP) AMS Particle Beam Generation Aerodynamic Sizing Particle Composition Mass analysis 4 Sample aerosol 3 Electron-impact 1 ionization (70 eV) BC laser (~4000 °C) 2 or metal (600 °C) vaporizer Jayne et al., AST 2000, Onasch et al., AST 2012 Introduction Ambient RIE Fragmentation Outlook 2/?? Nomenclature Introduction Ambient RIE Fragmentation Outlook 3/?? Set Up Introduction Ambient RIE Fragmentation Outlook 4/?? Set Up Introduction Ambient RIE Fragmentation Outlook 5/?? A. Size Selected • Propane soot (C/O = 0.25) • 200 nm, 300 nm, 500 nm 2. CAST “Brown” B. Thermodenuding • Propane soot (C/O = 0.41) • 250 °C 3. PALAS spark-generated C. Furnace • GFG soot; marketed as “diesel-like” • 1400 °C 4. “Regal Black” D. Argon • Carbon black (calibration)1 • COx 5. Fullerene-enriched soot E. Laser Power Drop • C60 and C70 (~5 and 1%) enriched graphitic soot.2 • Influence on MS • Internal Calibration 6. Hematite F. Ambient Introduction Ambient RIE Fragmentation Outlook 1Onasch 1. CAST “Black” et al., AST 2012, 2Krätschmer et al., 1990 Chem. Phys. Lett. Samples & Experiments 6/?? Mass & Fractional Contribution Introduction Ambient RIE Fragmentation Outlook 7/?? HR Organics Introduction Ambient RIE Fragmentation Outlook 8/?? BC: SP-AMS vs. MAAP Introduction Ambient RIE Fragmentation Outlook 9/?? RB Experiments ETH Introduction Ambient RIE Fragmentation Outlook 10/?? IE Introduction Ambient RIE Fragmentation Outlook 11/?? IE Intercomparison Introduction Ambient LU: 133 ± 11 LU: 87 ± 7 FMI: 261 ± 21 FMI: 154 ± 15 LU: 23 ± 4 LU: 54 ± 3 FMI: 49 ± 9 FMI: 86 ± 3 RIE Fragmentation Outlook 12/?? C1/C3 and C4/C3 ETH Introduction Ambient RIE Fragmentation FMI Outlook 13/??
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