Thermodynamics of solution of histidine

被引：19

作者：

Kustov, Andrey V. ^{[1
]}

Korolev, Valeriy P. ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Solut Chem, Thermochem Lab, Ivanova State Univ Chem & Technol, Ivanovo 153045, Russia

来源：

THERMOCHIMICA ACTA | 2006年 / 447卷 / 02期

关键词：

amino acids; enthalpies of solution; solubility; thermodynamics of solution;

D O I：

10.1016/j.tca.2006.04.008

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The enthalpies of solution of L-histidine in water at 288.15-318.15 K and 0.003-0.15 mol kg(-1) were measured. The enthalpies of solution were found to be independent of the solute molality up to similar to 0.1 mol kg(-1). Standard enthalpies and heat capacities of solution were computed. Free energies and entropies of solution have been estimated in the temperature range studied using literature solubility data and the results of the present study. The temperature increase was found to result in a pronounced rise of the L-histidine solubility due to the significant increase of the T Delta S values. The characteristic temperatures for the thermodynamic properties of histidine aqueous solutions were estimated. (C) 2006 Elsevier B.V. All rights reserved.

引用

页码：212 / 214

页数：3

共 13 条

[1] TRANSFER ENTHALPIES AND ENTROPIES OF AMINO-ACIDS FROM WATER TO UREA SOLUTIONS [J].