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Selectivity trends in packed column supercritical fluid chromatography with C18 stationary phases

✍ Scribed by Williams, Karen L. ;Sander, Lane C. ;Page, Steven H. ;Wise, Stephen A.

Publisher
John Wiley and Sons
Year
1995
Tongue
English
Weight
526 KB
Volume
18
Category
Article
ISSN
0935-6304

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✦ Synopsis

Abstract

The retention behavior of polycyclic aromatic hydrocarbons (PAHs) in packed‐column supercritical fluid chromatography (SFC) is studied for monomeric and polymeric C~18~ columns. Molecular shape discrimination (shape selectivity) is assessed through the use of Standard Reference Materials (SRMs), adn changes in selectivity are studied as a function of temperature, pressure, and mobile phase composition. Examples of separations of complex PAH isomer mixtures are presented, and guidelines are provided for modification and optimization of shape selectivity in SFC.

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