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Effect of column diameter on efficiency in capillary supercritical fluid chromatography
Authors:S. M. Fields  R. C. Kong  J. C. Fieldsted  M. L. Lee  P. A. Peaden
Abstract:
Fused silica capillary columns with internal diameters from 100 to 25 μm were coated with SE-54 and evaluated under supercritical fluid chromatographic conditions using carbon dioxide as mobile phase. Experimental results compared well with theoretical predictions. At ten times the optimum mobile phase velocity and for a capacity factor, k of 3, efficiencies of 2300 to 5600 plates m?1 were obtained for column diameters of 100 to 25 μm, respectively.
Keywords:Supercritical fluid chromatography  Capillary column  Column diameter  Efficiency
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