Advertisement

Fresenius' Journal of Analytical Chemistry

, Volume 341, Issue 10, pp 641–643 | Cite as

A novel method for terpene pattern determination of essential oils by selectivity tuning in GC

  • W. Engewald
  • T. Knobloch
  • G. Haufe
  • M. Müller
  • V. Pohris
Pharmaceutical And Clinical Samples

Summary

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.

Keywords

Terpene Terpenoid Retention Index Pattern Determination Interesting Compound 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Ohnesorge B (1953) Beiträge zur Entomol 3:437–467Google Scholar
  2. 2.
    Hesse G, Kauth H, Wächter R (1955) Ztschr angew Entomol 37:239–244Google Scholar
  3. 3.
    Kalo P, Selander J, Kangas E, Perttunen V (1974) Ann Ent Fenn 40:86–95Google Scholar
  4. 4.
    Selander J, Kalo P (1979) Silva Fenn 13:115–130Google Scholar
  5. 5.
    Müller F, Oréans M (1980) Analytical—Application Note No. 282. Siemens AG, Order No. E699/2001-101Google Scholar
  6. 6.
    Hinshaw JV, Ettre LS (1986) Chromatographia 21:561–572Google Scholar
  7. 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. 8.
    Kaiser RE, Rieder RI, Leming L, Blomberg L, Kusz P (1985) J High Resol Chromatogr 8:580–584Google Scholar
  9. 9.
    Kaiser RE, Rieder RI (1985) Labor-Praxis 9:1131–1135Google Scholar
  10. 10.
    Maurer T, Engewald W, Steinborn A (1990) J Chromatogr 517:77–86Google Scholar

Copyright information

© Springer-Verlag 1991

Authors and Affiliations

  • W. Engewald
    • 1
  • T. Knobloch
    • 1
  • G. Haufe
    • 1
  • M. Müller
    • 2
  • V. Pohris
    • 2
  1. 1.Department of Chemistry, Analytical CentreUniversity of LeipzigLeipzigFederal Republic of Germany
  2. 2.Department of Forestry SciencesTechnical University of DresdenTharandtFederal Republic of Germany

Personalised recommendations