Fresenius' Journal of Analytical Chemistry

, Volume 366, Issue 5, pp 488–493

Analysis of low molecular weight organic acids in water with capillary zone electrophoresis employing indirect photometric detection

  • J. Dahlén
  • J. Hagberg
  • St. Karlsson
Original paper

DOI: 10.1007/s002160050098

Cite this article as:
Dahlén, J., Hagberg, J. & Karlsson, S. Fresenius J Anal Chem (2000) 366: 488. doi:10.1007/s002160050098

Abstract

A capillary zone electrophoretic method for the analysis of low molecular weight carboxylic acids in water was developed. The application uses the chromophore trimellitic acid that allows for indirect photometric detection at 254 nm. Selectivity control by the addition of Ca2+ to the carrier electrolyte made possible a baseline resolved separation of 14 carboxylic acids. Good linearity and repeatability were obtained for both electrokinetic and hydrostatic injection modes. The usefulness of the method is demonstrated by the analysis of a snow sample.

Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • J. Dahlén
    • 1
  • J. Hagberg
    • 2
  • St. Karlsson
    • 2
  1. 1.Department of Water and Environmental Studies, Linköping University, 581 83 Linköping, SwedenSE
  2. 2.Man-Technology-Environment Research Center, Örebro University, 701 82 Örebro, SwedenSE