Hydration Behavior of Laser Dye Aerosols of Mixed Composition Having High Critical Supersaturations

Abstract

This study concerns aerosol particles of mixed composition. The particles contain a water insoluble core (polystyrene latex), surrounded by a water soluble shell (various fluorescent dyes). A Collison nebulizer and an electrostatic aerosol classifier are used to prepare the aerosol; its critical supersaturation spectrum is measured with a diffusion cloud chamber. Experiments were done using four different dyes (disodium fluorescein, sulforhodamine 640, sulforhodamine B and rhodamine 560 chloride) with five different polystyrene latex sphere sizes. The results indicate that a Kohler-type behavior is obeyed. This technique of putting a soluble coating onto an insoluble core is found to be a successful method for generating particles with relatively high critical supersaturations. © 1992.

Department(s)

Chemistry

Second Department

Mechanical and Aerospace Engineering

Keywords and Phrases

Aerosols - Composition Effects; Cloud Chambers; Lasers, Dye - Optical Properties; High Critical Supersaturation

International Standard Serial Number (ISSN)

0021-8502

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1992 Elsevier, All rights reserved.

Publication Date

01 Jul 1992

Link to Full Text

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