A Combustion Aerosol Generator for Submicron Aerosol Production
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A combustion aerosol generator (CAG) for the production of submicron aerosol particles was developed and experimentally studied in this study. Polydisperse aerosols are generated by a laminar diffusion burner with paraffin fuel in the nominal “pre-sooting” condition. The sample particles from the generator were characterized by the scanning electron microscope (SEM), the energy dispersive spectroscopy (EDS), and the long electrical mobility spectrometer (LEMS) for morphology, chemical composition, and particle number concentration and size distribution, respectively. It was found from the SEM image that a large portion of the particles were non-spherical and were agglomerated. Polydisperse aerosols with particle number concentrations of approximately 1014 particles/m3 were obtained. The average diameter of the generated particles obtained by the EMS is in the range of approximately 10 nm to several hundred nanometers.
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