Slide 1

Sino-Finnish workshop, Tampere, 15 August, 2013 Chemical characteristics of combustion aerosol particles Risto Hillamo 1, Topi Rnkk 2 and Liisa Pirjola 3 1 Research and Development, Finnish Meteorological Institute 2 Department of Physics, Tampere University of Technology 3 Metropolia University of Applied Sciences Joint study within the CLEEN/MMEA program, WP 4.5.2, Participating companies: Helsingin Energia, Proventia, Wrtsil, Metso, Pegasor, HSY. Slide 2 Emissions vs. air quality and climate forcing Sino-Finnish workshop, Tampere, 15 August, 2013 Important to distinguish between particles from primary emissions and secondary particles from gas phase emissions Our test site have been Helsinki: quite clean area with very low PM 2.5 background and only a few major emission categories: -Vehicle emissions -Wood combustion -Power plants and heating stations -Ship emissions Direct emission measurements and fresh ambient aerosols Risto Hillamo, Finnish Meteorological Institute Slide 3 Sino-Finnish workshop, Tampere, 15 August, 2013 Activities Direct emission measurements: coal combustion (CHP), HFO heat stations (oil burners), vehicles (dynamometer), diesel engines Online chemistry measurements at stationary stations Mobile laboratory Aircraft Risto Hillamo, Finnish Meteorological Institute Slide 4 Typical set-up CO 2 SAMPLING (offline) ONLINE Dekati FPS-4000 Dekati thermodenuder CO 2 Particles in emissions Sino-Finnish workshop, Tampere, 15 August, 2013Risto Hillamo, Finnish Meteorological Institute Slide 5 Online chemistry measurement Sino-Finnish workshop, Tampere, 15 August, 2013 - Extremely sensitive, particle chemical composition can be measured online in 1 s - For particles between 40 nm 1 m (PM 1 ) Risto Hillamo, Finnish Meteorological Institute Slide 6 Chemical composition and size distribution (40 nm