Conclusion

HTCGC is a powerful analytical method for the analysis of high molecular weight compounds. Instrumentation and columns are commercially available. For some applications, derivatization into stable volatile substances is required.

In HTCGC we cannot expect spectacular new developments because the thermal stability of the compounds being separated is the limiting factor. The MW range can be expanded a little by applying high speed columns, i.e. short lengths and small internal diameters. By reducing the residence time in the column, the thermal stress is reduced as well.

Figure 9 HTCGC analysis of an oligosaccharide sample using a temperature and pressure programme.

On the other hand, we will see more and more to the other separation methods. With state-of-the-art applications in the literature because CGC is always sup- HTCGC a number of applications presently carried out erior in terms of efficiency and speed of analysis compared with LC or SFC, can be done much better with GC.

Figure 10 Analyses of emulsifiers based on sorbitol (A) and on lactic acid (B).

Figure 10 Continued

See also: II/Chromatography: Column Technology; De-rivatization; Detectors: General (Flame Ionization Detectors and Thermal Conductivity Detectors); Detectors: Mass Spectrometry; Detectors: Selective; Sampling Systems. III/Lipids: Gas Chromatography. Oils, Fats and Waxes: Supercritical Fluid Chromatography. Petroleum Products: Gas Chromatography.

Solar Panel Basics

Solar Panel Basics

Global warming is a huge problem which will significantly affect every country in the world. Many people all over the world are trying to do whatever they can to help combat the effects of global warming. One of the ways that people can fight global warming is to reduce their dependence on non-renewable energy sources like oil and petroleum based products.

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