Chemistry: electrical and wave energy – Processes and products – Electrostatic field or electrical discharge
Patent
1990-02-09
1992-09-29
Niebling, John
Chemistry: electrical and wave energy
Processes and products
Electrostatic field or electrical discharge
2041801, 2041822, 204299R, G01N 2726
Patent
active
051511649
ABSTRACT:
Capillary zone electrophoresis is enhanced by the application of an electric field across the interior of the capillary tube. This external electric field is applied through a conductive member at the exterior of the capillary tube. The external field vectorially couples with the internal field, controlling the polarity and the magnitude of the surface (zeta) potential on the interior surface of the capillary. The control of the surface (zeta) potential reduces adsorption of macromolecular onto the interior surface of the capillary tube, by inducing electrostatic repulsions between the macromolecules, and the capillary surface. Additionally, the control of the surface (zeta) potential can retard, and even reverse, electroosmotic flow, depending upon the magnitude of those fields.
REFERENCES:
patent: 4859301 (1989-08-01), Brenner et al.
patent: 4898658 (1990-02-01), Karger et al.
patent: 4931328 (1990-06-01), Swedberg
Terabe et al., Electrokinetic Separations with Micellar Solutions and Open-Tubular Capillaries, Jan., 1984 111-113.
Terabe et al., Electrokinetic Chromatography with Micellar Solution and Open-Tubular Capillaries, Apr. 1985, 834-841.
Blanchard William C.
Lee Cheng S.
Blanchard and Co.
Niebling John
Phasge Arun S,.
The University of Maryland
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