Supercritical Fluid Chromatography diagram

Figure 12.24 Schematic diagram of the multidimensional packed capillary to open tubular column SFC-SFC system. Reprinted from Analytical Chemistry, 62, Z. Juvancz et al., Multidimensional packed capillary coupled to open tubular column supercritical fluid chromatography using a valve-switching interface , pp. 1384-1388, copyright 1990, with permission from the American Chemical Society.

Figure 7.1 Schematic diagram of atypical on-line SFE-GC. After Maeda and Hobo [39]. Reprinted from T. MaedaandT. Hobo, in Hyphenated Techniques in Supercritical Fluid Chromatography and Extraction (K. Jinno, ed.), pp. 255 - 274, Copyright (1992), with permission from Elsevier...

Figure 12.19 Schematic diagram of the interface system used for supercritical fluid chromatography-gas chromatography. Reprinted from Journal of High Resolution Chromatography, 10, J. M. Levy et al., On-line multidimensional supercritical fluid chromatogra-phy/capillary gas chromatography , pp. 337-341, 1987, with permission from Wiley-VCH.

PCB phase diagrams with carbon dioxide Effect of temperature and pressure on extraction of PCB and polyaromatic hydrocarbons Combination of solid-phase carbon trap with supercritical fluid chromatography for PCB, pesticides, polychlorodibenzo-p-dioxins and polychlorofurans... 

Figure 7.1 Schematic diagram of an SFC instrument. (Reprinted with permission from Ref. 2, Analytical Supercritical Fluid Chromatography and Extraction, Edited by M.L. Lee and K.G. Markides, 1990.)...

Figure 15 Supercritical fluid chromatography inductively coupled plasma mass spectrometry (SFC-ICP-MS) instrument diagram showing a SFC-ICP interface. (From Ref. 116.)...

Schematic diagram of a chromatographic separation system used in liquid, gas or supercritical fluid chromatography. The dashed boxes represent elements which are only used for some of the techniques.

Figure 2.2-10 Flow diagram of apparatus for supercritical fluid chromatography (SFC).

Figure 7.11. Schematic diagram of a split valve injector (A) and a timed-split injector (B) for open mbular column supercritical fluid chromatography.

Figure 2.9 Schematic diagram of the set up for on-line SFE/SFC (supercritical fluid extraction/ supercritical fluid chromatography).

Both in Supercritical Fluid Extraction (SFE) and Supercritical Fluid Chromatography (SFC), solutes are quite often solids, as many natural products are. In these cases, the phase diagrams can be very complicated, since crystallization and fluid phase equilibria overlap. 

A schematic diagram of a chromatograph for SFC is shown in Figure 6.10. In general, the instrument components are a hybrid of components developed for gas and liquid chromatography that have been subsequently modified for use with supercritical fluids. Thus, the. fluid delivery system is a pump modified for pressure control and the injection system a rotary valve similar to components used in liquid chromatography. The column oven and... 

The properties and physical chemistry of liquid and supercritical carbon dioxide have been extensively reviewed (Kiran and Brennecke, 1992), as have many fundamentals and applications for separation, chromatography, and extraction (McHugh and Krukonis, 1994). The phase diagram for pure C02 is illustrated in Figure 1.1. Due to its relatively low critical point, C02 is frequently used in the supercritical state. Other common supercritical fluids require higher temperatures and pressures, such as water with Tc = 374.2 °C and Pc = 220.5 bar, while propane (Tc = 96.7 °C and Pc = 42.5 bar) and ethane (Tc = 32.2 °C and Pc = 48.8 bar) have lower critical pressures but are flammable (McHugh and Krukonis, 1994). 

Figure 6. Schematic diagram of the on-line supercritical fluid extraction-gas chromatography instrumentation. (Reproduced from Ref. 13. Copyright 1987 American Chemical Society.)...

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