Send to

Choose Destination
See comment in PubMed Commons below
J Chromatogr A. 1998 Jul 17;813(2):349-60.

New set-up for capillary isoelectric focusing in uncoated capillaries.

Author information

  • 1Central Research Laboratory, Medical School, University of Pécs, Hungary.


Substituted aminomethylphenol dyes, low-molecular-mass isoelectric point (pI) markers and hemoglobin samples from normal individuals and diabetic patients were used to test a new set-up of capillary isoelectric focusing (cIEF) in uncoated capillaries. In previous cIEF methods, a mixture of sample components and carrier ampholytes was applied in the capillary and analyzed. In the new set-up a fractionated injection protocol is used to apply a 'sandwich' ampholyte-sample-ampholyte plug in the capillary for analysis. This new set-up allows the separation of amphoteric compounds having pI values outside the pH region of the ampholytes applied in the capillary with high precision. The high resolution power of this technique was proven with the analysis of hemoglobin variants.

[PubMed - indexed for MEDLINE]
PubMed Commons home

PubMed Commons

How to join PubMed Commons

    Supplemental Content

    Loading ...
    Support Center