, Volume 29, Issue 3–4, pp 115–119 | Cite as

Application of selectivity tuning in series-coupled capillary GC columns for the exact quantification of the quenching effect in FPD detection

  • J. Efer
  • T. Maurer
  • W. Engewald


In a series-coupled system of two capillary columns with different polarity, a controlled overlapping of sulphur-containing and sulphur-free compounds can be achieved by means of different mid-point pressure settings. By means of this selectivity tuning it is possible to measure exactly the quenching of the flame photometric detector signal for a sulphur compound coeluted with an excess of a sulphur-free compound. With the example of a complex sample it is shown that, with a suitable system of columns, selectivity tuning can give quench-free FPD chromatograms or chromatograms with quench-free regions.

Key Words

Gas chromatography FPD-Detection Sulfur compounds Quenching effects Series-coupled columns 


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Copyright information

© Friedr. Vieweg & Sohn Verlagsgesellschaft mbH 1990

Authors and Affiliations

  • J. Efer
    • 1
  • T. Maurer
    • 2
  • W. Engewald
    • 2
  1. 1.Combine of Chemical Plant Construction Leipzig-GrimmaCentral Laboratory of Coal AnalysisLeipzigGDR
  2. 2.Department of Chemistry, Analytical CentreKarl Marx University of LeipzigLeipzigGDR

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