PREVENTION OF PROTEIN ADSORPTION ON BARE FUSED-SILICA CAPILLARY BY PEG IN CAPILLARY ZONE ELECTROPHORESIS

Isoelectric focusing sample injection for capillary zone electrophoresis in a fused silica capillary.

An improvement has been made to couple isoelectric focusing (IEF) sample injection and capillary zone electrophoresis in an untreated fused silica capillary. Electroosmotic flow is efficiently prevented by simply using a rubber block at the outlet end of the capillary during IEF sample injection. The experimental conditions that affect the concentration effect are discussed. A concentration enh...

Sheathless capillary electrophoresis/electrospray ionization mass spectrometry using a pulled bare fused-silica capillary as the electrospray emitter.

It has always been assumed that electrical contact at the capillary outlet is a necessary requirement when coupling capillary electrophoresis (CE) with electrospray ionization mass spectrometry (ESI-MS). In this study, we used a pulled bare-capillary tip as the ESI emitter, but neither was it coated with any electrically conductive materials nor was a high external voltage applied on its outlet...

Capillary zone electrophoresis pdf

Sheathless capillary electrophoresis/electrospray mass spectrometry using a carbon-coated fused-silica capillary

A simple procedure was developed for preparing a carbon-coated fused-silica capillary for use in sheathless capillary electrophoresis/electrospray mass spectrometry (CE/ESI-MS). The tapered capillary tip was smeared with a marker pen before coating with carbon using a soft pencil. The layer from the ink of the marker pen was critical to the preparation of the carbon-coated capillary. The fabric...

Determination of Varenicline by Capillary Zone Electrophoresis

HASSAN A ALHAZMI, HAFIZ A MAKEEN, SAMI EL DEEB Department of Pharmaceutical Chemistry, College of pharmacy, Jazan University, P.O. Box 114, Jazan 45142, Saudi Arabia. Department of Clinical Pharmacy, College of pharmacy, Jazan University, P.O. Box 114, Jazan 45142, Saudi Arabia. Institute of Pharmacy, Freie Universität Berlin, Berlin, Germany Department of Pharmaceutical Chemistry, Al-Azhar Uni...