## Abstract The supercritical fluid chromatographic behavior of polychlorinated biphenyls (PCBs) and polychlorinated terphenyls (PCTs) is described. The method uses a microbore Cβ18 column and an open tubular capillary column coated with SEβ52 and carbon dioxide as the supercritical fluid. Factors
Supercritical-fluid chromatography: Open columnsvs packed columns
β Scribed by Schoenmakers, P. J.
- Publisher
- John Wiley and Sons
- Year
- 1988
- Tongue
- English
- Weight
- 476 KB
- Volume
- 11
- Category
- Article
- ISSN
- 0935-6304
No coin nor oath required. For personal study only.
β¦ Synopsis
Supercritical-fluid chromatography (SFC) may be performed either in open (capillary) columns or in packed columns. Both approaches have been demonstrated numerous times in the literature. In this contribution it will be attempted to discuss some aspects of columns for SFC. Some advantages of both types of columns will be identified. Attention is paid to the stationary phase film thickness, the speed of analysis, and to the maximum number of theoretical plates (effect of column pressure drop). In this brief contribution many questions will be left unanswered and many significant aspects will be left undiscussed, illustrating that much research remains to be done in this area.
π SIMILAR VOLUMES
A versatile system with a slurry-packed capillary column was developed for supercritical fluid chromatography, which is capable of programming both inlet and outlet pressure independently, as well as using a restrictor to apply back pressure. This system revealed the relationships between pressure d
## Abstract It is often observed that peak area precision in packed column supercritical fluid chromatography (pSFC) is rather poor when compared to values obtained in HPLC. Since the valves used for sample introduction in both techniques are identical, it is reasonable to expect that injection pre
The application of fluid extraction in combination with fluid chromatography with packed column and flame ionization detection is described. Fluid chromatographic equipment is shown. Applications of this system to drug characterization are demonstrated.
Newly developed perfluorinated polyethers, HOCH O CF O CF 2 2 p 2 . x Ε½ . CF O CH OH Z-Dols , were separated using packed capillary column supercrit-2 q 2 Ε½ . ical fluid chromatography SFC . A fluorocarbon-bonded stationary phase, Fluofix Ε½ . 120N 5 m and 120 A , was used as a packing material and