A SIMPLE FLOW SWITCHING INTERFACE FOR 2-DIMENSIONAL CAPILLARY SUPERCRITICAL-FLUID CHROMATOGRAPHY

Citation
S. Hishimoto et Y. Hirata, A SIMPLE FLOW SWITCHING INTERFACE FOR 2-DIMENSIONAL CAPILLARY SUPERCRITICAL-FLUID CHROMATOGRAPHY, Analusis, 26(5), 1998, pp. 23-26
Citations number
8
Categorie Soggetti
Chemistry Analytical
Journal title
ISSN journal
03654877
Volume
26
Issue
5
Year of publication
1998
Pages
23 - 26
Database
ISI
SICI code
0365-4877(1998)26:5<23:ASFSIF>2.0.ZU;2-4
Abstract
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.