Tsurko, Elena N. and Neueder, Roland and Kunz, Werner (2009) Activity of Water, Osmotic and Activity Coefficients of Sodium Glutamate and Sodium Aspartate in Aqueous Solutions at 310.15 K. ACTA CHIMICA SLOVENICA, 56 (1). pp. 58-64. ISSN 1318-0207,
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The vapour pressures of aqueous solutions of sodium L-glutamate (m(i) = 0.05-0.57 mol kg(-1)) and sodium L-aspartate (m(i) = 0.005-0.48 mol kg(-1)) were precisely measured at T = 310.15 K and the activity of water and the osmotic and activity coefficients of the solutes were calculated from these data. The concentration dependence of the osmotic coefficients is described with the help of the Pitzer equation and the mean spherical approximation (MSA). It is shown that it is possible to describe thermodynamic properties of sodium aspartate and sodium glutamate solutions up to 0.5 molkg(-1) with distance parameter R as the single fit parameter.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | AMINO-ACIDS; ELECTROLYTE MIXTURES; THERMODYNAMICS; 25-DEGREES-C; CHEMISTRY; HISTIDINE; PROTEINS; CHANNELS; CHLORIDE; SALTS; Vapor pressure osmometry; osmotic coefficients; sodium L-glutamate; sodium L-aspartate; short-range interactions; electrostatic interactions |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Physikalische und Theoretische Chemie > Chair of Chemistry VI - Physical Chemistry (Solution Chemistry) > Prof. Dr. Werner Kunz |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 07 Oct 2020 10:56 |
| Last Modified: | 07 Oct 2020 10:56 |
| URI: | https://pred.uni-regensburg.de/id/eprint/29593 |
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