Monitoring of Ultrafine Particles in Rural and Urban Environments
Ultrafine particles (UFPs) can penetrate deeper into the respiratory system and cause more adverse health effects than particulate matter of a larger size. Therefore, their measurement should be promoted and not only episodically. Within the framework of the PM-Lab project, Belgian, Dutch and German partners from the Meuse-Rhine Euregion joined their efforts to investigate this topic. The present study describes, on one hand, the technological choices together with the set up requirements to include such a system within an air quality network, and on the other hand, the first results of our different mobile campaigns. As the monitoring of UFPs is neither regulated by a European directive nor normalized yet, major differences exist between the systems available on the market; our choices are discussed. The sampling strategy consisted in a long-term monitoring at a rural background station in Vielsalm (Belgium), along with several short-term campaigns led in different locations, a mixed urban background and traffic site in Herstal (Belgium), a traffic site in Maastricht (The Netherlands) and an urban background site in Mülheim (Germany). Corresponding analyses and results are described with a focus on the differences appearing between rural and urban sites, mainly in terms of time and size distributions.
KeywordsNumber Concentration Ultrafine Particle Scanning Mobility Particle Sizer Diffusion Loss Differential Mobility Analyzer
We are thankful to Tim Nawrot for his contribution, to the Agence wallonne de l’Air et du Climat, the Provincie Limburg, the Landesamt für Natur, Umwelt und Verbraucherschutz NRW and the Institut für Energie- und Umwelttechnik e.V. for allowing the use of their data. The PM-Lab project is financed by the European Regional Development Fund through the Interreg IV-A initiative.
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