dorsal/arxiv
View SchemaExtraction of Thermodynamic Data from Ternary Diffusion Coefficients of Lysozyme Chloride in Water and Aqueous Na$_2$SO$_4$
| Authors | D. Buzatu, E. Petrescu, F. D. Buzatu, J. G. Albright |
|---|---|
| Categories | |
| ArXiv ID | physics/0403100 |
| URL | https://arxiv.org/abs/physics/0403100 |
Abstract
This paper presents, for ternary lysozyme-Na$_2$SO$_4$-water system, the thermodynamic data extracted from the measured values of four ternary diffusion coefficients and the Onsager reciprocal relations. The calculation for derivatives of solute chemical potentials with respect to solute molar concentrations was made using the method presented in \cite{1}. This method is applicable to systems in which the molar concentration of one solute is very small compared to that of the other, like in our case. The approach is illustrated for the lysozyme chloride-Na$_2$SO$_4$-water system at 25$^o$ C, pH 4.5 and at 0.6 mM (8.6 mg/mL) lysozyme chloride and 0.1, 0.25, 0.5, 0.65, and 0.8 M Na$_2$SO$_4$ concentrations. The calculated solute chemical potential derivatives were used to compute the protein cation charge approximately. We also compute the diffusion Onsager coefficients $(L_{ij})_o$ for each composition at pH 4.5.
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"abstract": "This paper presents, for ternary lysozyme-Na$_2$SO$_4$-water system, the\nthermodynamic data extracted from the measured values of four ternary diffusion\ncoefficients and the Onsager reciprocal relations. The calculation for\nderivatives of solute chemical potentials with respect to solute molar\nconcentrations was made using the method presented in \\cite{1}. This method is\napplicable to systems in which the molar concentration of one solute is very\nsmall compared to that of the other, like in our case. The approach is\nillustrated for the lysozyme chloride-Na$_2$SO$_4$-water system at 25$^o$ C, pH\n4.5 and at 0.6 mM (8.6 mg/mL) lysozyme chloride and 0.1, 0.25, 0.5, 0.65, and\n0.8 M Na$_2$SO$_4$ concentrations. The calculated solute chemical potential\nderivatives were used to compute the protein cation charge approximately. We\nalso compute the diffusion Onsager coefficients $(L_{ij})_o$ for each\ncomposition at pH 4.5.",
"arxiv_id": "physics/0403100",
"authors": [
"D. Buzatu",
"E. Petrescu",
"F. D. Buzatu",
"J. G. Albright"
],
"categories": [
"physics.chem-ph"
],
"title": "Extraction of Thermodynamic Data from Ternary Diffusion Coefficients of Lysozyme Chloride in Water and Aqueous Na$_2$SO$_4$",
"url": "https://arxiv.org/abs/physics/0403100"
},
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