Hanghui Liu and Purnendu K. Dasgupta*
Anal. Chem.,69, 1997, 1211
Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061
(Reviewers' Comments)
Abstract
The inlet of a capillary is joined to an open stream of buffer formed
on an inclined narrow surface and a constant voltage is applied to the
capillary. A drop of sample falls directly to the capillary inlet and then
is washed away quickly. Thus, a short sample plug with limited dilution
by the stream of buffer is injected in electrokinetic mode. No moving parts
are involved and no adjustment of voltage is necessary in the injection
process. The method is simple, reproducible, easy to automate and should
prove to be a valuable complement to the present injection techniques for
capillary zone electrophoresis.