Analysis of ν_i/κ_Tx in solvent mixtures at the critical line

Abstract

The microscopic density fluctuations in fluids near their critical point can complicate experimental approaches for measuring thermodynamic and transport properties in fluid mixtures in their near-critical regions (Bruno, 1991). For this reason, various experimental techniques have been used to circumvent the direct measurement of these properties in the critical region. A convenient method involves the use of SUpercritical fluid chromatography (SFC) to measure solute partial molar volumes close to the critical point in a dilute binary mixture (van Wasan et al.