1. Fine Particle & Aerosol Technology Laboratory, Department of Environmental and Biological Science, University of Eastern Finland, Kuopio, Finland;
2. Chair of Piston Machines and Internal Combustion Engines, Faculty of Mechanical Engineering and Marine Technology, University of Rostock, Rostock, Germany;
3. Joint Mass Spectrometry Centre, Chair of Analytical Chemistry, University of Rostock, Rostock, Germany;
4. Joint Mass Spectrometry Centre, Cooperation Group “Comprehensive Molecular Analytics”, Helmholtz Zentrum München, Neuherberg, Germany;
5. Finnish Meteorological Institute, Kuopio, Finland;
6. Atmospheric Aerosol Physics, Department of Applied Physics, University of Eastern Finland, Kuopio, Finland;
7. Forschungszentrum Jülich, Institute for Energy and Climate Research IEK-8: Troposphere, Jülich, Germany;
8. Department of Chemistry, University of Eastern Finland, Joensuu, Finland