Theory of field-flow fractionation with the reversible adsorption on channel walls

V. P. Andreev, L. A. Stefanovich

Research output: Contribution to journalArticle

11 Scopus citations

Abstract

The particle-wall interactions in field-flow fractionating channels are described phenomenologically using the distribution coefficient, k. The time dependencies of the first and second dispersion coefficients are calculated and compared with the known solutions for the case of no adsorption. The results for the retention ratio and peak broadening are compared with the known experimental work. The model predicts the increase of peak broadening with the growth of particle-wall interactions that is consistent with the experimental data. The dependence of peak asymmetry on transverse Pe number and distribution coefficient is studied.

Original languageEnglish (US)
Pages (from-to)325-328
Number of pages4
JournalChromatographia
Volume37
Issue number5-6
DOIs
StatePublished - Sep 1 1993

Keywords

  • Field-flow fractionation
  • Mathematical model
  • Peak asymmetry
  • Peak broadening
  • Reversible adsorption

ASJC Scopus subject areas

  • Analytical Chemistry
  • Clinical Biochemistry

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