Electromigration Dispersion in Capillary Electrophoresis

Zhen Chen, Sandip Ghosal*

*Corresponding author for this work

Research output: Contribution to journalArticle

7 Scopus citations

Abstract

In a previous paper (Ghosal and Chen in Bull. Math. Biol. 72:2047, 2010), it was shown that the evolution of the solute concentration in capillary electrophoresis is described by a nonlinear wave equation that reduced to Burger's equation if the nonlinearity was weak. It was assumed that only strong electrolytes (fully dissociated) were present. In the present paper, it is shown that the same governing equation also describes the situation where the electrolytic buffer consists of a single weak acid (or base). A simple approximate formula is derived for the dimensionless peak variance which is shown to agree well with published experimental data.

Original languageEnglish (US)
Pages (from-to)346-355
Number of pages10
JournalBulletin of Mathematical Biology
Volume74
Issue number2
DOIs
StatePublished - Feb 1 2012

Keywords

  • Capillary electrophoresis
  • Electromigration dispersion

ASJC Scopus subject areas

  • Neuroscience(all)
  • Immunology
  • Mathematics(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Environmental Science(all)
  • Pharmacology
  • Agricultural and Biological Sciences(all)
  • Computational Theory and Mathematics

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