nPETS proposes a cross-sectoral concept that describes the nPETS research activities to assess the emissions of nanoparticles from all transport modes, as illustrated in the following Figure. Quantification and monitoring of sub 100 nm emissions is performed both in a controlled laboratory environment and in field studies.
All quantification and monitoring are performed with the same type of instruments (ELPI+ and DGI) to ensure comparable measurement results. Particles collected from these studies is characterized in terms of size, morphology, and chemical composition linked with the different sources. Toxicology studies based on sampled particles from filters, as well as in situ cell exposure, is performed too. For ensuring repeatability in the cell exposure studies, the same type of cell exposure module, or Air Liquid Interface (ALI), is utilized at all test sites.
The project also includes a review of the current knowledge on the impact of sub 100 nm emissions on toxicology and epidemiology. Gender and age are also considered due to differences in exposure levels. The nPETS approach includes a transfer of knowledge between the partners as well as to legislative bodies. In particular, databases of sub 100 nm particles from different sources, also linked to the locations, will be provided to further aid legislation work. All of this serves as an input for a review of future sub 100 nm emission health policies and their economic impact.