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Proceedings Paper

Determination of thermodynamic parameters of water-dissolved complexes at T < 360oC with the help of Raman spectroscopy: methods and equipment
Author(s): M. F. Vigasina; R. Yu. Orlov; T. P. Dadze; G. A. Kashirtseva
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Paper Abstract

For the first time the Raman spectrometric study for determination Gibbs free energy of the formation (Delta) Gf and Henry's constant in high-temperature water solution was used. We studied the system S1q-H2O at 200-360 degrees C and the pressure of the saturated water vapor. The values (Delta) Gf as a function of temperature for the aqueous species H2S(aq), SO2(aq) and S8(aq) were calculated after determination of the equilibria constant between species of the system. We determined 8-term ring molecules S8(aq) as the predominant species of the elementary sulfur in a water solution. The quantitative data were obtained using the Raman intensity of the strength vibration of water as the internal standard. The design of the autoclave provided the possibility of measuring the distribution of components between liquid and gas for Henry's constant determination.

Paper Details

Date Published: 18 February 2000
PDF: 6 pages
Proc. SPIE 4069, Raman Scattering, (18 February 2000); doi: 10.1117/12.378110
Show Author Affiliations
M. F. Vigasina, Moscow State Univ. (Russia)
R. Yu. Orlov, Moscow State Univ. (Russia)
T. P. Dadze, Institute of Experimental Mineralogy (Russia)
G. A. Kashirtseva, Institute of Experimental Mineralogy (Russia)

Published in SPIE Proceedings Vol. 4069:
Raman Scattering
Vladimir S. Gorelik; Anna D. Kudryavtseva, Editor(s)

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