Measurement of aerosol nanoparticles from a combustion particle generator by using three types of dilutors

Özet

Ultrafine aerosol nanoparticles created from combustion were measured by using three types of dilutors:a simple mixing dilutor, an ejector dilutor, and a rotational disk dilutor. The original particle size distributionfrom combustion was compared to the estimated distribution from these dilutors. The resultsshowed that ultrafine aerosol nanoparticles maintained their particle size distribution, while particleconcentrations decreased 10e20 fold in the dilution processes. Therefore, the dilutors not only dilutedthe aerosol nanoparticle concentration to the level of the measurement devices, but also helped estimatethe shape of aerosol particle size distribution, particularly for ultrafine aerosol nanoparticles fromcombustion.