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Variation of the activity of ice nuclei upon exposure to ammonium ion and iodine Cover

Variation of the activity of ice nuclei upon exposure to ammonium ion and iodine

Open Access
|Jan 1987

Abstract

Laboratory experiments were performed to determine the extent to which the ice nucleating abilities of several compounds are influenced by the presence of iodine in different forms. Changes were observed in both freezing (liquid phase) and depositional (vapor phase) ice nucleation abilities of a number of lead nucleant-iodine combinations. Iodine vapor increased the number of deposition nuclei per gram of lead oxide by one order of magnitude. Thermodynamic considerations suggest that at least three other lead compounds may respond similarly to iodine vapor. Freezing nuclei active at - 1 °C were produced from lead oxide particles in the presence of NH4I; a sensitivity to the temperature prehistory of this system was noted and a qualitative explanation is advanced.

Language: English
Page range: 363 - 373
Submitted on: Apr 10, 1985
Accepted on: Nov 18, 1986
Published on: Jan 1, 1987
Published by: Stockholm University Press
In partnership with: Paradigm Publishing Services

© 1987 Michael T. Reischel, published by Stockholm University Press
This work is licensed under the Creative Commons Attribution 4.0 License.