Single-Particle Mass Spectrometry of Metal-Bearing Diesel Nanoparticles

摘要

It is known that diesel engines produce a tri-modal size distribution of DPM (diesel particulate matter), (1). The number of nano-size particles i.e. those in the "nuclei" mode, is quite variable and can be attributed in many cases to the self-nucleation of volatile species during the dilution and simultaneous cooling of the exhaust. In some cases nanoparticles may also form prior to dilution (2,3).