Variation of gas chromatographic retentions with carrier pressure and composition

Journal Article · Mon Oct 01 04:00:00 EDT 1984 · Anal. Chem.; (United States)

DOI:https://doi.org/10.1021/ac00276a031· OSTI ID:5787375

Laub, R J

The second-interaction cross virial coefficients B/sub 1M/ are calculated for the solutes n-hexane, trans-3-hexene, benzene, 3,3-dimethylpentane, and cyclohexane with hydrogen, helium, nitrogen, carbon monoxide, carbon dioxide, argon, water, methane, ethane, carbon tetrachloride, and fluorotrichloromethane. The results are then used to evaluate the regression of In (solute specific retention volume) (V/sub g/..pi..) with carrier pressure and composition, and it is shown theoretically as well as demonstrated experimentally that retentions as well as retention order can accordingly be altered. Plots of solute V/sub g//sup 0/ or of (V/sub g/..pi..)/sup -1/ against mole fraction of the fluoroalkane mobile phase in admixture with hydrogen are found to be curved, although the curvature is slight at column pressure drops of 1.1 atm and less. The linear variation of solute capacity factors K' against partial pressure of steam + nitrogen as reported by Pretorius is thereby explained.

• Research Organization: San Diego State Univ., CA
• OSTI ID: 5787375
• Journal Information: Anal. Chem.; (United States), Journal Name: Anal. Chem.; (United States) Vol. 56:12; ISSN ANCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102* -- Chemical & Spectral Procedures
400201 -- Chemical & Physicochemical Properties
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ALKANES
ALKENES
ARGON
AROMATICS
BENZENE
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON MONOXIDE
CARBON OXIDES
CARBON TETRACHLORIDE
CHALCOGENIDES
CHLORINATED ALIPHATIC HYDROCARBONS
CHLOROFORM
CHROMATOGRAPHY
CYCLOALKANES
CYCLOHEXANE
DATA
DENSITY
DISSOLVED GASES
EFFICIENCY
ELEMENTS
EQUATIONS
EQUATIONS OF STATE
ETHANE
EXPERIMENTAL DATA
FLUIDS
FLUORINE COMPOUNDS
GAS ANALYSIS
GAS CHROMATOGRAPHY
GASES
HALOGEN COMPOUNDS
HALOGENATED ALIPHATIC HYDROCARBONS
HELIUM
HEXANE
HEXENES
HYDROCARBONS
HYDROGEN
HYDROGEN COMPOUNDS
INFORMATION
METHANE
NITROGEN
NONMETALS
NUMERICAL DATA
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PARTIAL PRESSURE
PENTANE
PHYSICAL PROPERTIES
PRESSURE DEPENDENCE
RARE GASES
SEPARATION PROCESSES
SOLUBILITY
SOLUTES
THERMODYNAMIC PROPERTIES
VIRIAL EQUATION
WATER