Fused-silica capillary columns with internal diameters of 50 pm were coated with 0.25 to 1.0 pm films of SE-54 and evaluated under supercritical fluid chromatographic conditions using carbon dioxide as mobile phase. Experimental results compared well with theoretical predictions. There was no signif
The mobile-phase effects on stationary-phase properties in capillary supercritical fluid chromatography
β Scribed by Novotny, M. ;David, P.
- Publisher
- John Wiley and Sons
- Year
- 1986
- Tongue
- English
- Weight
- 417 KB
- Volume
- 9
- Category
- Article
- ISSN
- 0935-6304
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β¦ Synopsis
A significant uptake of supercritical mobile phases into immobilized stationary phases has been observed. The phase swelling effect has been evaluated hydrodynamically for SE-30, SE-54, and cyanopropyl silicone phases with respect to the mobilephase density of supercritical butane, column temperature, and the presence of a polar retention moderator. Some kinetic and retention consequences of the swelling phenomena are discussed.
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