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Hydrofluorocarbon and perfluorocarbon mobile phases for capillary supercritical fluid chromatography

✍ Scribed by John A. Blackwell; Luke E. Schallinger

Publisher
John Wiley and Sons
Year
1994
Tongue
English
Weight
488 KB
Volume
6
Category
Article
ISSN
1040-7685

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✦ Synopsis

Abstract

The eluotropic strength of several hydrofluorocarbon and perfluorocarbon supercritical fluids is examined using capillary supercritical fluid chromatography. The results obtained are compared with carbon dioxide, fluoroform, and carbon dioxide modified with 5% methanol. Various naphthalene derivatives are used to determine differences in functional group selectivity between these fluids. Specific hydrogen bonding interactions are observed between hydrogen bond donating hydrofluorocarbon fluids and naphthalene derivatives with hydrogen bond accepting functional groups. Unexpectedly, perfluorocarbon fluids are much stronger in eluotropic strength than carbon dioxide, fluoroform, or methanol‐modified carbon dioxide.

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