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Effect of stationary phase film thickness on efficiency in capillary supercritical fluid chromatography

✍ Scribed by Fields, S. M. ;Kong, R. C. ;Lee, M. L. ;Peaden, P. A.

Publisher
John Wiley and Sons
Year
1984
Tongue
English
Weight
421 KB
Volume
7
Category
Article
ISSN
0935-6304

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✦ Synopsis

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 significant difference in h, i , or iopt for film thicknesses from 0.25 to 1 .O pm overk= 1 to5.Atafilmthicknessof 1.0 pm,calculationsindicate that approximately 10?6 resolution loss would be expected for solutes with k = 1.

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