Characterization of particulate matter emissions from on-road gasoline and diesel vehicles using a soot particle aerosol mass spectrometer

- T. R. Dallmann1,*, T. B. Onasch2, T. W. Kirchstetter1,3, D. R. Worton4,5, E. C. Fortner2, S. C. Herndon2, E. C.Wood6, J. P. Franklin2,**, D. R.Worsnop2, A. H. Goldstein1,4, and R. A. Harley1