A novel method for terpene pattern determination of essential oils by selectivity tuning in GC
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Selectivity tuning is used in a system of series-coupled GC-columns of different polarity in order to improve the analysis of complex samples of essential oils. It is shown that selectivity tuning by changing the flow-rates in the single columns can be used for improving both the resolution and the reliability of identification. Furthermore, by combining this method with column switching techniques (multidimensional GC) a reduction of sample complexity could be reached. Isothermal retention indices of 35 terpenoid compounds were ascertained using a non-polar and a polar capillary column serving as the input-values of a computer program which enables the prediction of system retention times at any adjusted flow-rate. Therefore, promising chromatographic conditions for the separation of interesting compounds could be selected without great experimental effort and some of these compounds could be identified with a high degree of reliability.
KeywordsTerpene Terpenoid Retention Index Pattern Determination Interesting Compound
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- 1.Ohnesorge B (1953) Beiträge zur Entomol 3:437–467Google Scholar
- 2.Hesse G, Kauth H, Wächter R (1955) Ztschr angew Entomol 37:239–244Google Scholar
- 3.Kalo P, Selander J, Kangas E, Perttunen V (1974) Ann Ent Fenn 40:86–95Google Scholar
- 4.Selander J, Kalo P (1979) Silva Fenn 13:115–130Google Scholar
- 5.Müller F, Oréans M (1980) Analytical—Application Note No. 282. Siemens AG, Order No. E699/2001-101Google Scholar
- 6.Hinshaw JV, Ettre LS (1986) Chromatographia 21:561–572Google Scholar
- 7.Toth T, Garay F (1987) In: Sandra P (ed) Proceedings of the 8th International Symposium on Capillary Chromatography, Riva del Garda. Hüthig, Heidelberg Basel New York, pp 585–595Google Scholar
- 8.Kaiser RE, Rieder RI, Leming L, Blomberg L, Kusz P (1985) J High Resol Chromatogr 8:580–584Google Scholar
- 9.Kaiser RE, Rieder RI (1985) Labor-Praxis 9:1131–1135Google Scholar
- 10.Maurer T, Engewald W, Steinborn A (1990) J Chromatogr 517:77–86Google Scholar