, Volume 10, Issue 5, pp 250–255 | Cite as

Are we using the full range of film thickness in capillary-GLC?

  • K. GrobJr.
  • K. Grob


In most capillary GCL columns the film thickness is almost always the same. In addition to column dimensions, liquid phase and support characteristics, however, the film thickness of a column is of great importance and should be adjusted for the specific problem. Dependence of retention, separation efficiency, inertness, capacity, and thermal stability on film thickness is empirically shown for a 100-fold (1∶100) thickness range. In conclusion, directions are given for determining the appropriate film thickness for the different types of sample and analytical tasks.


Analytical Chemistry Organic Chemistry Thermal Stability Liquid Phase Film Thickness 
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.


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  1. [1]
    K. Grob andG. Grob, J. Chromatogr.125, 471 (1976).Google Scholar
  2. [2]
    K. Grob, G. Grob andK. Grob jun., Chromatographia March 1977.Google Scholar

Copyright information

© Friedr. Vieweg & Sohn, Verlagschesellschaft mbH 1977

Authors and Affiliations

  • K. GrobJr.
    • 1
  • K. Grob
    • 1
  1. 1.GC-LaboratoryETH Zürich, EAWAGDübendorfSwitzerland

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