## Abstract The influence of pressure drop on retention, selectivity, plate height and resolution was investigated systematically in packed supercritical fluid chromatography (SFC) using pure carbon dioxide as the mobile phase. Numerical methods developed previously which enabled the prediction of
Use of a thermally insulated column for improved speed, efficiency and resolution in packed-column supercritical fluid chromatography
β Scribed by Donald P. Poe
- Book ID
- 108341030
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- English
- Weight
- 416 KB
- Volume
- 785
- Category
- Article
- ISSN
- 1873-3778
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
Fused silica capillary columns with internal diameters from 100 to 25 pm werecoated withSE-54 and evaluated undersupercritical fluid chromatographic conditions using carbon dioxide as mobile phase.Experimental results compared well with theoretical predictions. At ten times the optimum mobile phase
## Abstract The operating characteristics of a solventless injector for packed column supercritical fluid chromatography are described. Successful operation depends on the difference between the volatilities of the analytes and the solvent or matrix being sufficient for their separation by gas purg
## Abstract The effects of the pressure drop across the column on retention and efficiency in SFC have been studied. Numerical methods are described which enable the prediction of holdβup time and pressure drop in both packed and open tubular columns. Predictions of both holdβup time and pressure d
A recently developed microelectrochemical detector for packed capil-Ε½ . lary column supercritical fluid chromatography pcSFC has been applied to determine nanogram amounts of tocopherols and vitamin A in vegetable oil samples. With this procedure, no removal of triglycerides, preconcentration, or is