Unified gas and supercritical fluid chromatography on 50 μm i.d. Columns |
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Authors: | Daixin Tong Keith D Bartle Anthony A Clifford Robert E Robinson |
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Affiliation: | 1. School of Chemistry, University of Leeds, Leeds, LS2 9JT, UK;2. Valco Instruments Co. Inc., P.O. Box 55603, Houston, TX 77255, USA |
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Abstract: | A unified approach to sequential gas and supercritical fluid Chromatography using 50 μm i.d. open tubular columns is described. Sample introduction is performed by means of a rotary injection valve. In order that linear velocities can be optimized independently, a second rotary valve in the chromatographic oven is used to direct the flow of column eluate to the flame ionization detector through either fused silica tubing in GC, or a frit restrictor in SFC. Applications of sequential GC-SFC on a 50 μm i.d. open tubular column are demonstrated, and comparisons made between sequential GC-SFC on 50 and 100 μm i.d. columns. |
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Keywords: | Unified chromatography Gas chromatography Supercritical fluid chromatography Open tubular column Injection technique |
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