Uptake of gas molecules by liquids: a model

A model for the nonreactive uptake of gas molecules by liquids is described. The model uses the concept that the interface is a narrow region of a dense gaslike state within which nucleation is continually occurring. In this region, clusters that are formed in a critical size grow by condensation an...

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Veröffentlicht in:	Journal of physical chemistry (1952) 1991-08, Vol.95 (16), p.6337-6340
Hauptverfasser:	Davidovits, P, Jayne, J. T, Duan, S. X, Worsnop, D. R, Zahniser, M. S, Kolb, C. E
Format:	Artikel
Sprache:	eng
Schlagworte:	400201 - Chemical & Physicochemical Properties 540120 - Environment, Atmospheric- Chemicals Monitoring & Transport- (1990-) Chemistry ENTROPY ENVIRONMENTAL SCIENCES Exact sciences and technology FLUIDS GASES General and physical chemistry INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY LIQUIDS MATHEMATICAL MODELS PHYSICAL PROPERTIES Surface physical chemistry THERMODYNAMIC PROPERTIES UPTAKE
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Beschreibung
Zusammenfassung:	A model for the nonreactive uptake of gas molecules by liquids is described. The model uses the concept that the interface is a narrow region of a dense gaslike state within which nucleation is continually occurring. In this region, clusters that are formed in a critical size grow by condensation and merge with the nearby bulk liquid. The incoming gas molecule participates in this nucleation process. If this molecule becomes part of a critical-sized cluster, then it will be incorporated into the bulk liquid via condensation growth. A quantitative formulation of this model leads to an expression for the mass accommodation coefficient on water that is in agreement with experimental measurements.
ISSN:	0022-3654 1541-5740
DOI:	10.1021/j100169a048