Transport molecules across the luquid-vapor interface probed by surface nonlinear optical spectroscopy
- Pacific Northwest National Lab., Richland, WA (United States)
Surface second harmonic generation is used to investigate the behavior of solute molecules at the liquid water/vapor interface. This surface specific technique allows the determination of the relative energetics between molecules adsorbed at the interface and solute molecules in the bulk, as well as the energy barrier between them. Measurements of the surface excess of dimethyl sulfoxide on aqueous solutions are reported. Kinetic data allow the determination of the barrier between surface states and fully solvated states. These data, in combination with the results of other techniques, facilitate development of models for the mechanism(s) of the uptake of gases by aqueous solutions. The results are discussed in reference to current models of the uptake of gases by aqueous solutions and their relevance to heterogeneous atmospheric processes.
- OSTI ID:
- 370009
- Report Number(s):
- CONF-960376-; TRN: 96:003805-0058
- Resource Relation:
- Conference: Spring national meeting of the American Chemical Society (ACS), New Orleans, LA (United States), 24-28 Mar 1996; Other Information: PBD: 1996; Related Information: Is Part Of 211th ACS national meeting; PB: 2284 p.
- Country of Publication:
- United States
- Language:
- English
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