Equations of State for NaCl and CaCl2 Solutions of Arbitrary Concentration at Temperatures 423.15-623.15 K and Pressures up to 5 kbar

被引：5

作者：

Ivanov, M. V. ^{[1
]}

Bushmin, S. A. ^{[1
]}

Aranovich, L. Y. ^{[2
]}

机构：

[1] Russian Acad Sci, Inst Precambrian Geol & Geochronol, St Petersburg 199034, Russia

[2] Russian Acad Sci, Inst Geol Ore Deposits Petrog Mineral & Geochem, Moscow 119017, Russia

来源：

DOKLADY EARTH SCIENCES | 2018年 / 481卷 / 02期

关键词：

CHLORIDE SOLUTIONS; CALCIUM-CHLORIDE; MOLAR VOLUME; MOLALITIES; DENSITIES; MODEL; MPA;

D O I：

10.1134/S1028334X18080287

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Equations of state valid for all possible salt concentrations in solution are obtained for binary fluids H2ONaCl and H2OCaCl2. The equations are based on the empirical form of the Gibbs free energy for salt solutions of arbitrary concentration, developed earlier. Based on experimental data on the PVTx properties the obtained earlier thermodynamic description of H2ONaCl and H2OCaCl2 solutions at saturated vapor pressure is extended towards higher pressures. For H2ONaCl pressures are up to 5 kbar. For H2OCaCl2 pressures cover the range of available experimental data up to 0.7 kbar. The equations allow precise calculation of the whole set of thermodynamic parameters of the discussed salt solutions in the temperature ranges 423.15-573.15 K and 423.15-623.15 K, corresponding to low temperature hydrothermal ore deposits, that could be relevant for thermodynamic modeling of ore-bearing fluids at such deposits.

引用

页码：1086 / 1090

页数：5