High temperature gas chromatography

Hydrogen is the only acceptable carrier gas in HTGC. Three support materials have been used for HTGC, fused-silica, metal and borosilicate glass. Although 

Gas chromatography at the maximum working temperature of the method is a borderline application. Many potential HPLC and SFC applications fall in the working range of HTGC. Nevertheless, with respect to selectivity 

According to Blum and Damasceno [94] the real importance of HTGC (as well as cSFC) lies in the combination with MS. Coupling of HTGC to MS is discussed in Blum and Aichholz [193], 

Applications On a comparative basis, HTGC is a relatively new tool and extremely valuable for the analyses of extracted polymer additives, as shown by industrial problem solving. For satisfactory analysis of in-polymer additives by HTGC two specific conditions are to be met. The instrument should be equipped with a cool on-column injection port to better preserve some of the additives and/or their by-products that may be thermally labile. The instrument must also have electronic pressure control so that some of the very high-boiling components, such as Irganox 1010, are 

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Evershed, R. P., C. Heron, and L. J. Goad (1990), Analysis of organic residues of archaeological interest by high temperature gas chromatography and high temperature gas chromatography-mass spectrometry, Analyst 115, 1339-1342. 

Mayer, B. X., Reiter, C. and Bereuter, T. L. (1997) Investigation of thetriacylglycerol composition of iceman s mummified tissue by high temperature gas chromatography. Journal of Chromatography, B 692, 1 6. 

HTGC-MS High temperature gas chromatography-mass spectrometry... 

Ebdon, L., Evans, E. H., Pretorius, W. G., and Rowland, S. J., Analysis of geoporphyrins by high-temperature gas-chromatography inductively-coupled plasma-mass spectrometry and high-performance liquid-chromatography inductively-coupled plasma-mass spectrometry. Journal of Analytical Atomic Spectrometry 9(9), 939-943, 1994. 

Branco, A.P. et al.. Further lipophilic flavonols in Vellozia graminifolia (Velloziaceae) by high temperature gas chromatography quick detection of new compounds, Phytochem. Anal, 12, 266, 2001. 

Vapor pressure data are not available for the ionic and nonionic surfactants. Some alcohol ethoxylates have been analyzed by high temperature gas chromatography, but the fact that elution temperatures of the higher ethoxylated AEs are above 520 K on a SE 30 boiling point column (Stancher and Favretto, 1978) indicates that the vapor pressure of these compounds is comparatively low. This is consistent with the high boiling points of these compounds. In addition, since surfactants are rather water soluble, their Henry s law constants can be expected to be very low. Actually, no measured Henry s law constants are available. As a result, evaporation of surfactants can be expected to be negligible. 

W. G. Pretorius, L. Ehdon, S. J. Rowland, Development of a high-temperature gas chromatography - inductively coupled plasma mass spectrometry interface for the determination of metalloporphyrins, J. Chromatog., 646 (1993), 369-375. 

Carlson R. M. K., Teerman S. C., Moldowan J. M., Jacobson S. R., Chan E. 1., Dorrough K. S., Seetoo W. C., and Mertani B. (1993) High temperature gas chromatography of high-wax oils. In Indonesian Petroleum Association, 22nd Annual Convention Proceedings, Jakarta, Indonesian Petroleum Association, Indonesia, pp. 483-507. 

Heath D. J., Lewis C. A., and Rowland S. J. (1997) The use of high temperature gas chromatography to study the biodegradation of high molecular weight hydrocarbons. Org. Geochem. 26, 769-785. 

Triacylglycerides from animal and vegetable sources have been separated and identified by HT-HRGC and high-temperature gas chromatography... 

The detection of vanadium, nickel, and porphyrins in crude oils were analyzed by high-temperature gas chromatography-atomic emission spectroscopy (HT-GC-AES), presenting characteristic metal distribu-... 

F. M. Lanyas and J. J. S. Moreira, High temperature gas chromatography (HT-GC) analysis of underivatized cyclopeptidic alkaloids, Proc. of the 23rd Int. Symp. Capill. Chromatogr., 2000. 

Philp R.P. (1994) High temperature gas chromatography for the analysis of fossil fuels a review. J. High Res. Chromatogr. 17, 398-406. 

Carlson, R. M. K. et al. 1993. High temperature gas chromatography of high-wax oils. Indonesian Petroleum Association, 22nd Annual Convention Proceedings. Jakarta, Indonesia, 483-507. 

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