Experimental determination of enhancement factors from supercritical-fluid chromatography

B. O. Brown; A. J. Kishbaugh; M. E. Paulaitis

doi:10.1016/0378-3812(87)85027-6

Experimental determination of enhancement factors from supercritical-fluid chromatography

B. O. Brown, A. J. Kishbaugh, M. E. Paulaitis

Research output: Contribution to journal › Article › peer-review

31 Scopus citations

Abstract

An experimental technique is described which involves the application of SCF chromatography to predicting enhancement factors in supercritical fluids at elevated pressures. We consider an important step in the development of this application: the determination of solute fugacities in the stationary phase of the chromatograph column. Experimental results are presented for chromatographic retention times of several aromatic hydrocarbons in a column with supercritical CO₂ as the carrier fluid and a stationary phase of octadecylsilica particles. The measurements are used to determine the mechanism of solute retention in the column, and to develop a thermodyanmic correlation for predicting solute fugacities in the stationary phase.

Original language	English (US)
Pages (from-to)	247-261
Number of pages	15
Journal	Fluid Phase Equilibria
Volume	36
Issue number	C
DOIs	https://doi.org/10.1016/0378-3812(87)85027-6
State	Published - Oct 2 1987
Externally published	Yes

ASJC Scopus subject areas

General Chemical Engineering
General Physics and Astronomy
Physical and Theoretical Chemistry

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title = "Experimental determination of enhancement factors from supercritical-fluid chromatography",

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AU - Paulaitis, M. E.

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N2 - An experimental technique is described which involves the application of SCF chromatography to predicting enhancement factors in supercritical fluids at elevated pressures. We consider an important step in the development of this application: the determination of solute fugacities in the stationary phase of the chromatograph column. Experimental results are presented for chromatographic retention times of several aromatic hydrocarbons in a column with supercritical CO2 as the carrier fluid and a stationary phase of octadecylsilica particles. The measurements are used to determine the mechanism of solute retention in the column, and to develop a thermodyanmic correlation for predicting solute fugacities in the stationary phase.

AB - An experimental technique is described which involves the application of SCF chromatography to predicting enhancement factors in supercritical fluids at elevated pressures. We consider an important step in the development of this application: the determination of solute fugacities in the stationary phase of the chromatograph column. Experimental results are presented for chromatographic retention times of several aromatic hydrocarbons in a column with supercritical CO2 as the carrier fluid and a stationary phase of octadecylsilica particles. The measurements are used to determine the mechanism of solute retention in the column, and to develop a thermodyanmic correlation for predicting solute fugacities in the stationary phase.

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JF - Fluid Phase Equilibria

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Experimental determination of enhancement factors from supercritical-fluid chromatography

Abstract

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