Journal ArticleDOI
Comparison of packed and capillary columns for practical SFC separations
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TLDR
In this article, a polysiloxane-type packing material was developed for use in SFC, where relatively polar compounds were eluted from a microbore column with good peak shape using a mobile phase consisting of CO2 modified with formic acid and water.Abstract:
A newly developed polysiloxane-type packing material shows promise for use in SFC. Relatively polar compounds were eluted from a microbore column with good peakshape using a mobile phase consisting of CO2 modified with formic acid and water. The latter combination is an effective modifier suitable for use with pressure programming and FID detection.read more
Citations
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Journal ArticleDOI
Stationary phases for packed-column supercritical fluid chromatography
TL;DR: The solvation parameter model is used to identify the main parameters that affect retention in supercritical fluid chromatography using carbon dioxide-methanol as a mobile phase and as a basis for column characterization to facilitate the identification of stationary phases with different separation characteristics for method development.
Journal ArticleDOI
Analysis of fatty acids in foods by supercritical fluid chromatography
TL;DR: In this paper, different analytical approaches are discussed to separate both FAMEs and FFAs, among these approaches, the tuning of the mobile and the stationary phase are reviewed for open tubular, packed and packed capillary SFC.
Journal ArticleDOI
On-line supercritical fluid extraction and chromatography of organotins with packed microbore columns and formic acid modified carbon dioxide*
John W. Oudsema,Colin F. Poole +1 more
TL;DR: In this article, supercritical fluid chromatography (SFC) using formic acid modified carbon dioxide and polymer encapsulated silica based stationary phases is used for the analysis with flame ionization detection of organotin compounds.
Journal ArticleDOI
Column technology for packed capillary columns
TL;DR: The packed capillary column is one type of microcolumn as discussed by the authors and it is used increasingly in liquid chromatography, supercritical fluid chromatography and multidimensional chromatography applications.
References
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Journal ArticleDOI
Integral Pressure Restrictor for Capillary SFC
E.J. Guthrie,H.E. Schwartz +1 more
TL;DR: Technique de preparation de capillaires avec restricteur, reproductible, de bonne stabilite mecanique as mentioned in this paper, a.k.a. reproductibility.
Journal ArticleDOI
Stationary phases for reversed-phase liquid chromatography : Coating of silica by polymers of various polarities
TL;DR: In this paper, the possibilities of syntheses and the chromatographic properties of reversed-phase materials achieved by polymer coating have been investigated, and a special alkylpolysiloxanes, which were to be immobilized on different types of silica, have been synthesized by equilibration of different mixtures of methylhydropolysoxanes with octamethyltetrasiloxane and subsequent hydrosilylation of 1-alkenes of different chain length.
Journal ArticleDOI
Investigations of the Uses of Modifiers in Supercritical Fluid Chromatography
J.M. Levy,W.M. Ritchey +1 more
TL;DR: Diminution du temps de retention d'aromatiques condenses, separation de composes azo non solubles dans CO 2 pur, etc as discussed by the authors.
Journal ArticleDOI
Investigation of polar modifiers in carbon dioxide mobile phases for capillary supercritical fluid chromatography
Bob W. Wright,Richard D. Smith +1 more
TL;DR: In this paper, the effect of low concentrations of polar modifiers on the selectivity of a non-polar carbon dioxide mobile phase in capillary supercritical fluid chromatography (SFC) was determined.
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