High-performance liquid chromatographic stationary phases based on poly(methyloctylsiloxane) immobilized on silica: III. Stability evaluations

Several reversed-phase materials for high-performance liquid chromatography were obtained by deposition of poly(methyloctylsiloxane) (PMOS) on HPLC silica particles, followed by immobilization using different procedures. Each phase had characteristic physicochemical and chromatographic properties. T...

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Veröffentlicht in:	Journal of Chromatography A 2003-02, Vol.987 (1), p.93-101
Hauptverfasser:	Tonhi, Edivan, Collins, Kenneth E, Collins, Carol H
Format:	Artikel
Sprache:	eng
Schlagworte:	Acenaphthene Analytical chemistry Chemistry Chromatographic methods and physical methods associated with chromatography Chromatography, High Pressure Liquid - instrumentation Dimethylaniline Ethylbenzene Exact sciences and technology Microscopy, Electron, Scanning Naphthalene Other chromatographic methods Phenol Poly(methyloctylsiloxane) Polymers - chemistry Silicon Dioxide - chemistry Siloxanes - chemistry Uracil
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Zusammenfassung:	Several reversed-phase materials for high-performance liquid chromatography were obtained by deposition of poly(methyloctylsiloxane) (PMOS) on HPLC silica particles, followed by immobilization using different procedures. Each phase had characteristic physicochemical and chromatographic properties. The present work evaluates the stability of these phases with both neutral and basic mobile phases. All of the stationary phases were quite stable to neutral mobile phase, with less stability at higher pH. However, one thermally immobilized phase presented high stability even at an elevated temperature with a pH 10.0 mobile phase.
ISSN:	0021-9673
DOI:	10.1016/S0021-9673(02)01820-4