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Related Experiment Videos

New practical algorithm for modelling retention times in gradient reversed-phase high-performance liquid

G Hendriks1, J P Franke, D R A Uges

  • 1Pharma Bio-Research Group BV, P.O. Box 200 9407AE Zuidlaren, The Netherlands. ghendriks@pbr.nl

Journal of Chromatography. A
|September 1, 2005
PubMed
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A new algorithm models retention times in liquid chromatography (LC) by accounting for dwell volume effects. This improves predictions, especially at low flow rates and for fast gradients in LC-Mass Spectrometry (LC-MS) method development.

Area of Science:

  • Analytical Chemistry
  • Chromatography

Background:

  • Computer models commonly predict liquid chromatography (LC) behavior.
  • Dwell volume significantly impacts gradient shape and retention time prediction, especially with mass spectrometric detection and low flow rates.

Purpose of the Study:

  • To develop a straightforward algorithm for modeling retention times in reversed-phase LC.
  • To incorporate the effect of dwell volume on gradient shape into retention time predictions.

Main Methods:

  • Development of a novel algorithm for retention time modeling.
  • Validation of the model's predictions against experimental data in reversed-phase LC systems.

Main Results:

  • The proposed model accurately predicts retention times by accounting for dwell volume.

Related Experiment Videos

  • Dwell volume effects are most pronounced at lower flow rates and for analytes eluting late in fast gradients.

    • Conclusions:

    • The new algorithm provides reliable predictions for retention times in reversed-phase LC.
    • This model is a valuable tool for optimizing LC-Mass Spectrometry (LC-MS) method development.