Determination of thermodynamic characteristics from retention data in GC

L. Podmaniczky, L. Szepesy, K. Lakszner, G. Schomburg

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Retention data have been measured for model substances of different polarities under isothermal conditions at several temperatures using capillary columns coated with Carbowax-20M and SP-2100 stationary phases. By using the k′ capacity ratios obtained for various temperatures the thermodynamic characteristics of the partition process were determined. For homologous series linear relationships can be established between thermodynamic characteristics and carbon number. Thermodynamic characteristics can be used both to compare and evaluate column quality and to predict retention indices for different temperatures and linear programmed temperature conditions.

Original languageEnglish
Pages (from-to)591-595
Number of pages5
JournalChromatographia
Volume20
Issue number10
DOIs
Publication statusPublished - Oct 1 1985

Keywords

  • CW-20M and SP-2100 stationary phases
  • Capillary gas chromatography
  • Retention of model substances
  • Thermodynamic characteristics

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Clinical Biochemistry
  • Organic Chemistry

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