EXPERIMENTAL-DETERMINATION OF THE PVTX PROPERTIES OF AQUEOUS-SOLUTIONS AT ELEVATED-TEMPERATURES AND PRESSURES USING SYNTHETIC FLUID INCLUSIONS - H2O-NACL AS AN EXAMPLE

The Synthetic Fluid Inclusion Technique provides a new and relatively simple experimental procedure for determining the Pressure-Volume-Temperature-Composition (PVTX) properties of aqueous solutions at elevated temperatures and pressures. With this technique, samples of the fluid(s) are isolated in quartz (SiO2) at elevated temperatures and pressures and maintained for later laboratory study. Application of the Synthetic Fluid Inclusion Technique to determine isochores, critical properties, freezing-point depression, NaCl solubility, and Liquid-vapor and liquid-solid phase equilibria in the H2O-NaCl system over a wide range of PTX conditions is described.