A method for measurement of aerosols through induced currents as a result of a pulsed charging.

摘要

According to the invention are initially charged in a pulsed diffusion charger particles of an aerosol, then the charge state of the aerosol changes periodically. Subsequently, the aerosol is conducted past one or more sensing electrodes, and induced in each electrode a current that is proportional to the charge of the particles. The currents of each measuring electrode are measured with an electric meters (6) and then evaluated. In case of a single electrode may be determined by the lungendeponierte particle surface. If more than one measurement electrode is used, particles are deposited selectively size between the electrodes, which in the case of two electrodes, the average particle size and the number of particles can be determined, in the case of multiple electrodes even the particle size distribution. This measuring method can also be used to achieve an optimal assignment of a microscope specimen using nanoparticles.