Hydration behavior of laser dye aerosols of mixed composition having high critical supersaturations

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 sup...

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Bibliographic Details
Published in:Journal of aerosol science 1992-07, Vol.23 (5), p.437-445
Main Authors: Trueblood, M.B., Hagen, D.E., Alofs, D.J.
Format: Article
Language:English
Subjects:
Aerosols
Chemistry
Colloidal state and disperse state
Exact sciences and technology
General and physical chemistry
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Summary: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.
ISSN:0021-8502
1879-1964
DOI:10.1016/0021-8502(92)90015-N