title: Experimental observations of the hydrodynamic behavior of solvent systems in high-speed counter-current chromatography. III. Effects of physical properties of the solvent systems and operating temperature on the distribution of two-phase solvent systems.
abstract: Statistical studies were made to correlate the hydrodynamic behavior of two-phase solvent system in counter-current chromatography (CCC) to their physical properties including interfacial tension, viscosity, and the difference in density of the two phases. Settling time measured under unit gravity provided a reliable numerical index for the hydrodynamic behavior of the solvent systems in a centrifugal force field. Viscosity and settling time were strongly correlated (correlation coefficient, r = +0.88) while interfacial tension (r = -0.65) and phase density difference (r = -0.45) showed moderate and weak correlation, respectively. Studies of the effect of temperature on settling time as well as a preliminary apparatus operated at higher temperature show that raising the temperature will improve the performance of high-speed CCC.
mesh_terms: D002851:Chromatography, High Pressure Liquid / Q000295:instrumentation / Q000379:methods*; D012997:Solvents; D013696:Temperature
chemical_list: D012997:Solvents