Retention in supercritical fluid chromatography: influence of the partial molar volume of the solute in the stationary phase

Journal Article · Wed Mar 23 23:00:00 EST 1988 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100317a054· OSTI ID:5252148

Yonker, C R; Smith, R D

Theoretical models for retention in supercritical fluid chromatography have described solute retention based on statistical thermodynamics or classical thermodynamic models of mobile-phase interactions with the solute. The shortcomings of these models largely reside in the assumption of pressure-independent solute-stationary phase interactions with supercritical fluids. The pressure dependence of the partial molar volume of the solute in the stationary phase and the role of the partial molar volume of the solute in the stationary phase on retention in supercritical fluid chromatography are discussed based upon experimental studies with CO/sub 2/ over a wide range of fluid pressures.

• Research Organization: Pacific Northwest Lab., Richland, WA (USA)
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 5252148
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 92:6; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105* -- Separation Procedures
AROMATICS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
CHROMATOGRAPHY
CONDENSED AROMATICS
DATA
EXPERIMENTAL DATA
HYDROCARBONS
INFORMATION
MATHEMATICAL MODELS
MECHANICS
MEDIUM TEMPERATURE
NAPHTHALENE
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PRESSURE DEPENDENCE
SEPARATION PROCESSES
SOLUTES
STATISTICAL MECHANICS
SUPERCRITICAL FLUID CHROMATOGRAPHY
THERMODYNAMICS