S. Hishimoto et Y. Hirata, A SIMPLE FLOW SWITCHING INTERFACE FOR 2-DIMENSIONAL CAPILLARY SUPERCRITICAL-FLUID CHROMATOGRAPHY, Analusis, 26(5), 1998, pp. 23-26
A simple flow switching interface was developed for two-dimensional ca
pillary supercritical fluid chromatography. The interface consisted of
a three-way valve and three fused silica capillaries. A novel connect
ion method to minimize dead volume and to eliminate unswept space in t
he system was also developed. With the system heart-cutting is easy to
perform and the selectivity for the separations on the secondary colu
mn can be tuned simply by changing the resistance of connection capill
ary between two columns, The effectiveness of this system was demonstr
ated by the separations of isomeric ethoxylate oligomers and fatty aci
d cholesteryl eaters.