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Chromatographia

, Volume 53, Issue 9–10, pp 548–552 | Cite as

An empirical equation for the calculation of retention time with extrapolation of temperature in gas chromatography

  • J. P. Chen
  • X. M. Liang
  • Q. Zhang
  • L. F. Zhang
Originals Gas Chromatography

Summary

An empirical equation is proposed to accurately correlate isothermal data over a wide range of temperature. With the equation lnk=A * +B * /T λ the retention times of different solutes tested on OV-101, SE-54 and PEG 20M capillary columns have been achieved even when λ is assigned a constant value of 1.7. Comparison with lnk=A+B/T and lnk=c+d/T+h/T 2, shows that the proposed equation is of higher accuracy and is applicable to extrapolation calculation, especially from data at high temperature to those at low temperature. ParametersA * andB * as well asA andB are also discussed. The linear correlation ofA * andB * is weaker than that ofA andB.

Key Words

Gas chromatography Retention time Temperature equation Extrapolation of retention 

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References

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    Schoenmakers, P.J.Optimization of chromatographic Selectivity, Elsevier, Amsterdam,1986.Google Scholar
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    Mowery, Jr. R.A.J. Chromatogr. Sci. 1991,29, 194–201.Google Scholar
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Copyright information

© Friedr. Vieweg & Sohn Verlagsgesellschaft mbH 2001

Authors and Affiliations

  • J. P. Chen
    • 1
  • X. M. Liang
    • 1
  • Q. Zhang
    • 1
  • L. F. Zhang
    • 1
  1. 1.Dalian Institute of Chemical Physicsthe Chinese Academy of SciencesDalianP.R. China

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