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Chemical and physical characterization of traffic particles investigated in four highway environments in the Helsinki metropolitan area

Chemical and physical characterization of traffic particles investigated in four highway environments in the Helsinki metropolitan area

Traffic-related pollution is a major concern in urban areas due to its harmful effects on human health. The characteristics of the traffic emissions were measured on four highway environments in the Helsinki metropolitan area with a mobile laboratory, equipped with state-of-the-art instrumentation. Concentration gradients were observed for all traffic-related pollutants; particle number, particulate mass (PM1), black carbon, organics, and nitrogen oxides. Flow dynamics appeared to be an important factor for the dilution of the pollutants as the half-decay distances for the traffic-related PM1 concentrations varied from 3 to 75 m at different sites.

More information:

Sanna Saarikoski, puh. 050 590 6091, sanna.saarikoski@fmi.fi

 

Liisa Pirjola, puh. 040 731 8045, liisa.pirjola@metropolia.fi

 

Enroth, J., Saarikoski, S., Niemi, J., Kousa, A., Ježek, I., Močnik, G.,

Carbone, S., Kuuluvainen, H., Rönkkö, T., Hillamo, R. & Pirjola, L.: Chemical and physical characterization of traffic particles in four different highway environments in the Helsinki metropolitan area. Atmos. Chem. Phys., 16, 5497–5512, 2016.

http://www.atmos-chem-phys.net/16/5497/2016/


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