Interpretation of the excess adsorption isotherms of organic eluent components on the surface of reversed-phase phenyl modified adsorbents

The adsorption of three organic eluent components (acetonitrile, methanol, and tetrahydrofuran) from water were measured on four phenyl-type bonded phases using the minor disturbance method. The thicknesses of organic layer enriched above the phenyl-type bonded ligands were assessed and interpreted....

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Veröffentlicht in:	Journal of Chromatography A 2005-08, Vol.1082 (2), p.158-165
Hauptverfasser:	Chan, F., Yeung, L.S., LoBrutto, R., Kazakevich, Y.V.
Format:	Artikel
Sprache:	eng
Schlagworte:	Acetonitriles - chemistry Adsorption Analytical chemistry Chemistry Chromatographic methods and physical methods associated with chromatography Chromatography, High Pressure Liquid - methods Exact sciences and technology Furans - chemistry Methanol - chemistry Other chromatographic methods Phenyl-type bonded phases Reversed-phase Water - chemistry
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Zusammenfassung:	The adsorption of three organic eluent components (acetonitrile, methanol, and tetrahydrofuran) from water were measured on four phenyl-type bonded phases using the minor disturbance method. The thicknesses of organic layer enriched above the phenyl-type bonded ligands were assessed and interpreted. Acetonitrile and tetrahydrofuran showed multilayer formation while methanol showed monomolecular adsorption. These results were compared to those obtained on alkyl bonded phases.
ISSN:	0021-9673
DOI:	10.1016/j.chroma.2005.05.078