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Fine particle chemistry studies with the Aerosol Mass Spectrometer (AMS)

Fine particle chemistry studies with the Aerosol Mass Spectrometer (AMS). Risto Hillamo Finnish Meteorological Institute, Helsinki, Finland. Campaigns in Helsinki Urban background station December 8 -19, 2008 January 8 - March 13, 2009 April 9 - May 7, 2009 Traffic station

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Fine particle chemistry studies with the Aerosol Mass Spectrometer (AMS)

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  1. Fine particle chemistry studies with the Aerosol Mass Spectrometer (AMS) Risto Hillamo Finnish Meteorological Institute, Helsinki, Finland

  2. Campaigns in Helsinki • Urban background station • December 8 -19, 2008 • January 8 - March 13, 2009 • April 9 - May 7, 2009 • Traffic station • May 20 - June 02, 2009 Risto Hillamo/Finnish Meteorological Institute

  3. Experimental methods: urban background station • Aerodyne High-Resolution Time-of-Flight Aerosol Mass Spectrometer (HR-ToF-AMS): Non-refractory inorganic and organic aerosol material (5 min) • Particle Into Liquid Sampler coupled with an Ion Chromatograph (PILS-IC): Major watersoluble anions and cations, including oxalate (15 min) • Particle Into Liquid Sampler coupled with a total organic carbon analyzer (PILS-TOC): Water-soluble organic carbon (5 min) • Semicontinuous EC/OC analyser (Sunset): Organic carbon and elemental carbon (2 h) • Tapered element oscillating micro-balance (TEOM): PM1 mass concentration (10 min) • PM1 filter sample: Chemical analysis by the IC coupled with MS Risto Hillamo/Finnish Meteorological Institute

  4. AMS container Helsinki Fine PM Experiment 2008-2009 Inlet: Sharp Cut Cyclone, PM1 sample Risto Hillamo/Finnish Meteorological Institute

  5. AMS container: inside AMS PILS-IC PILS-TOC Risto Hillamo/Finnish Meteorological Institute

  6. AMS vs. other instruments Risto Hillamo/Finnish Meteorological Institute

  7. AMS vs. other instruments Risto Hillamo/Finnish Meteorological Institute

  8. 3 1 2 4 5 6 Special events Risto Hillamo/Finnish Meteorological Institute

  9. FMI N Hämeentie Aerosols from traffic (200 m transport) 10/12/2008 SMEAR III Risto Hillamo/Finnish Meteorological Institute

  10. p-ToF-mode: Chemical particle mass size distribution Risto Hillamo/Finnish Meteorological Institute

  11. Traffic – winter inversion m/z 57 = C4H9 Risto Hillamo/Finnish Meteorological Institute

  12. Sulphuric acid aerosol 4 Risto Hillamo/Finnish Meteorological Institute

  13. Oil-shale combustion power plants Narva, Estonia gases Risto Hillamo/Finnish Meteorological Institute

  14. Biomass burning – wood combustion AMS 5 min AMS m/z 60 vs. Filter PM1 levoglucosan Risto Hillamo/Finnish Meteorological Institute

  15. Water-soluble organic carbon Risto Hillamo/Finnish Meteorological Institute

  16. Traffic station May 20 - June 02, 2009 • Locates in downtown of Helsinki • A few meters from the road • AMS • MAAP: black carbon • PM10/PM2.5: mass concentration • NO2, NO Street level PM10 PM2.5 NOx MAAP PM1 AMS PM1 Risto Hillamo/Finnish Meteorological Institute

  17. Black carbon and total organic and inorganic material Risto Hillamo/Finnish Meteorological Institute

  18. Average composition of May 20 - June 02, 2009 Risto Hillamo/Finnish Meteorological Institute

  19. Size distributions of traffic aerosols Risto Hillamo/Finnish Meteorological Institute

  20. Conclusions • AMS unit mass resolution data is excellent for studies of inorganic non-refractory material (e.g. comparable with time-scales of weather parameters and gas phase measurements or backward trajectories), and in most cases it gives a good view to sources and origin of organic material • AMS high-resolution data needed to understand better the chemistry of organic aerosols • (A. C. Aiken et al., ACPD 9, 8377–8427, 2009) Risto Hillamo/Finnish Meteorological Institute

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