Supercritical fluid chromatography: The effect of the partial molar volume in the stationary phase on retention. [Adsorption or partitioning process]

Conference · Fri Jul 01 00:00:00 EDT 1988

OSTI ID:6779809

Yonker, C R; Smith, R D

Retention in supercritical fluid chormatography (SFC) is a dynamic mechanism involving intermolecular interactions in the mobile phase and stationary phase. A simple thermodynamic model describing solute retention has been investigated based on the macroscopic thermodynamic variables of the solute partial molar volume in the stationary and mobile phases. Solute-solvent interactions in the mobile phase are dominant at lower pressures. Solute interaction with the five different stationary phases reflects the polarizability difference between these phases as shown by the partial molar volume of the solute in the stationary phase. 12 refs., 4 figs.

• Research Organization: Pacific Northwest Lab., Richland, WA (USA)
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 6779809
• Report Number(s): PNL-SA-15424; CONF-880621-1; ON: DE88016959
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102* -- Chemical & Spectral Procedures
AROMATICS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
CHROMATOGRAPHY
CONDENSED AROMATICS
HYDROCARBONS
INTERMOLECULAR FORCES
MATHEMATICAL MODELS
NAPHTHALENE
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PARTICLE MODELS
PRESSURE DEPENDENCE
RETENTION
SEPARATION PROCESSES
STATISTICAL MODELS
SUPERCRITICAL FLUID CHROMATOGRAPHY
THERMODYNAMIC MODEL