Fig. 3
Generation and sampling of particles from road simulator. Aliquots of road simulator dust were cleaned with xylene prior to light and electron microscopy (A) Road simulator with sampling hood mounted on one wheel. Road simulator was run at 50 km/h for four hours with each tyre set. (B) Analysis scheme for image segmentation (ImageJ) analysis to estimate particle volume and tyre mass. (C) Emissions calculated from Py-GCMS and microscopy measurements