Published: Journal of Chromatographic Science, Volume
37, Number 9, October 1999, pp. 388-394
Separation Behavior of Various Organic Compounds on Branched-Polyfluoroalkylsilane
Coated SilicaGel Columns
Toshiro Kamiusuki, Takashi Monde, Koji Yano, Toshinobu
Yoko, and Takeo Konakahara
Fluorinated compounds are separated using fluorinated columns.
The elution order depends on the number of fluorine atoms in the solutes. The
addition of a masking agent of adsorption point to the mobile phase improves the
separation of nitrogen-containing compounds, giving rise to symmetric peaks. Better
recognition of geometrical isomers and epimers is achieved on fluorinated packings,
which is attributed to the less solvophobic interaction than on an octadecyl siloxane
column and the rigid molecular structure of the fluorocarbon chain. Using 2,2,2-trifluoroethanol
as a mobile phase, cresol isomers are separated on fluorinated columns.
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