, Volume 37, Issue 7–8, pp 411–414 | Cite as

A comparison of different retention index systems with unsaturated and aromatic hydrocarbons in capillary gas chromatography on PEG 20M

  • A. Orav
  • K. Kuningas
  • S. Rang


The correction of the reproducibility of retention indices on polar capillary columns with different film thickness, using more polar reference standards instead ofn-alkanes, was investigated. It was found that the replacement ofn-alkanes by 1-alkenes, 3-alkynes and n-alkylbenzenes as standards significantly improves the reproducibility of retention indices and diminishes their temperature increments forn-alkanes,n-alkynes and arenes on PEG 20M columns.

Key Words

Gas chromatography Retention indices Adsorption effects n-Tetradecenes n-Tetradecynes 


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Copyright information

© Friedr. Vieweg & Sohn Verlagsgesellschaft mbH 1993

Authors and Affiliations

  • A. Orav
    • 1
  • K. Kuningas
    • 1
  • S. Rang
    • 1
  1. 1.Institute of ChemistryEstonian Academy of SciencesTallinnEstonia

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