Abstract
The charging of particles is the main critical point in the generation of monodisperse particles by electrostatic classification. On one hand the usually used bipolar charging of particles is advantageous because it is chemically unselective, but on the other hand it is disadvantageous for charging of ultrafine particles below 30 nm. Here we observe a decreasing charging efficiency through the decreasing output particle concentration after the classification step. The objective of the work presented was to prove whether a combination of photoelectric charging with electrostatic classification can improve significantly the output concentrations of a classification process. Also the application of a chemically more selective charging mechanism, like photoelectric charging, should certify a more defined surface composition of the aerosol under study. Different toxic metal aerosols were chosen as model aerosols.
| Original language | English |
|---|---|
| Pages | 466-469 |
| Number of pages | 4 |
| State | Published - 1986 |
| Externally published | Yes |