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Title: Extractant effect on the retention of the stationary phase in a rotating coiled column
Authors: Maryutina, TA
Ignatova, SN
Spivakov, BY
Issue Date: 2002
Publisher: Springer Verlag
Citation: Journal of Analytical Chemistry 57(5): 419-422, May 2002
Abstract: The effects of physicochemical properties of two-phase liquid systems (interfacial tension and differences in density and viscosity) on the retention of the stationary phase in the column were examined. These effects mainly determine the separation parameters of compounds. Extractant/decane–aqueous phase systems were used; their physicochemical properties changed both as a result of adding an extractant (di-(2-ethylhexyl) phosphoric acid, trioctylamine, or tributyl phosphate) to the organic solvent and because of a change in the composition of the aqueous phase. Aqueous ammonium sulfate of varying concentration was used as a mobile phase. It was shown that interfacial tension substantially affects the behavior of the systems under consideration. An increase in the ammonium sulfate concentration only slightly affects the retention factor of the stationary phase in the column. With a proper choice of the stationary phase, countercurrent chromatography can be used for the extraction of components from salt solutions of various concentrations.
Description: This is an open access article that be found at the links below - Copyright @ 2002 Springer Verlag
ISSN: 1061-9348
Appears in Collections:Brunel Institute for Bioengineering (BIB)

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