Measurements of Aerosol Particle Sizes from a Direct Injection Nebulizer

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Abstract:

Photographs and laser-scattering measurements showed that a direct injection nebulizer (DIN) produced a finer aerosol with a narrower drop size distribution than that for a conventional glass concentric nebulizer when both were operated at the same liquid and nebulizer gas flow rates. The droplets from the DIN were slightly larger, however, than those leaving a Scott-type spray chamber with a glass concentric nebulizer. The droplets from the DIN had a Sauter mean diameter of ∼7 μm and a 90% mass diameter of 11–16 μm. The droplet size distribution became narrower and shifted to lower diameters as the aerosol gas flow rate increased.

Keywords: Emission spectroscopy; Instrumentation, emission spectroscopy; Instrumentation, nebulizers

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/0003702914335481

Affiliations: 1: Ames Laboratory-U.S. Department of Energy, Department of Chemistry, Iowa State University, Ames, Iowa 50011; present address: Cetac Technologies, Inc., 5600 S. 42nd Street, Omaha, NE 68107 2: Ames Laboratory-U.S. Department of Energy, Department of Chemistry, Iowa State University, Ames, Iowa 50011

Publication date: November 1, 1991

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