Mobile Smog Chamber
- Secondary Aerosol Formation (S-Feinstaub): Quantification and characterization of primary emissions and secondary aerosol formation from road vehicles at the European Union Joint Research Center (JRC), Italy
- Investigation of aerosol generated from cooking processes
- Further work on road vehicles at JRC
- Investigation of emissions from other fossil fuel combustion sources e.g. farming vehicles, hand held tools, wood burning, ship emissions
- Aerosol nucleation studies with ambient, e.g. forest, air
Relative humidity in the mobile chamber can be adjusted rapidly and accurately to anywhere between 0-90%. When operated independently of the transport trailer, the temperature is determined by the capabilities of the host facility; experiments have so far been conducted in the range -7 to 25 °C.
Injection of aerosol into the smog chamber is powered by a heated ejector dilutor (Dekati Ltd, Tampere, Florida) and sampling lines. Again, flexibility is important and the heated inlet lines are built up of a number of individual heated segments allowing operation of the smog chamber at different distances to the emissions source.
The core instrumentation for aerosol characterization includes the aerosol mass spectrometer (AMS), the aethalometer and the multi-angle absorption spectrometer (MAAP). For measurements of CO, CH4, CO2 and H2O we use the Picarro G2401 cavity ring-down spectrometer. The total hydrocarbon is measured with the HORIBA APHA 370 total hydrocarbon analyzer. Additional state of the art instruments may be available at host facilities.
Media Echos (various languages)
Stephen M. Platt et al, Nature Communications, 13 May 2014
doi: 10.1038/ncomms4749 Link to Article
Secondary organic aerosol formation from gasoline vehicle emissions in a new mobile environmental reaction chamber
Stephen M. Platt et al, Atmospheric Chemistry and Physics, 13, 9141-9158, 2013
Effects of alkylate fuel on exhaust emissions and secondary aerosol formation of a 2-stroke and a 4-stroke scooter
Alessandro Zardini et al, Atmospheric Environment, 94, 307-315, 2014
doi: 10.1016/j.atmosenv.2014.03.024 Link to Article