Particle and Aerosol Research Vol. 2, No. 1, March 2006 |
ISSN : 1738-8716 (Print) ISSN : 2287-8130 (Online) |
Development and performance test of high-flow unipolar diffusion charger for real-time measurement of the submicron aerosol mean diameter
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Abstracts
We designed and evaluated a unipolar diffusion charger which consisted of corona discharge, mixing, and ion
trap zones. For the performance evaluation of the diffusion charger, the dioctyl sebacate (DOS) particles with
diameters of 0.1~0.8 ¥ìm, and sodium chloride (NaCl) particles smaller than 0.1 ¥ìm, were used. The performance
parameters of the diffusion charger, wall loss and product of penetration by the number of charges (P∙n), were
evaluated. Finally, we measured the submicron aerosol mean diameter by using the diffusion charger, CPC
(condensation particle counter, TSI 3025A), and aerosol electrometer (TSI 3068A).
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