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Digitale Medien

Capillary GC on 50 micrometer I.D. Columns coated with thick films. Theory and selected practical results (1995)

Steenackers, Dirk ; Sandra, Pat

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 18 (1995), S. 77-82

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ISSN: 0935-6304

Schlagwort(e): Capillary gas chromatography ; Film thickness ; Pressure drop ; Speed of analysis ; Applications ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: The chromatographic performance of 50 μm internal diameter (i.d.) fused silica columns coated with up to 2 μm films of immobilized SE-54 (methyl phenyl (5%) silicone) is evaluated under gas chromatographic conditions. The influence of pressure drop on the plate height is discussed. In comparison to thick film 250-530 μm i.d. columns, much higher efficiencies and faster analyses are obtained. Practical examples, performed on a standard GC instrument, illustrate the features of thick film 50 μm i.d. columns.

Zusätzliches Material: 10 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jhrc.1240180202

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Digitale Medien

Separation of chiral compounds by capillary electrophoresis (1998)

Verleysen, Katleen ; Sandra, Pat

Weinheim : Wiley-Blackwell

Electrophoresis 19 (1998), S. 2798-2833

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ISSN: 0173-0835

Schlagwort(e): Capillary electrophoresis ; Chiral separations ; Chiral selectors ; Applications ; Review ; Chemistry ; Biochemistry and Biotechnology

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Biologie , Chemie und Pharmazie

Notizen: This review presents the different chiral selectors used in capillary electrophoresis (CE) for the separation of enantiomers. The use of charged cyclodextrins, crown ethers, polysaccharides, proteins, natural and synthetic micelles, macrocyclic antibiotics and ergot alkaloids is discussed in detail. Neutral native and derivatized cyclodextrins are not treated because several review articles have already been published on this topic. Recent developments like the application of two chiral selectors in the same background electrolyte are highlighted.

Zusätzliches Material: 29 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/elps.1150191607

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