Electrical potential configuration for an electrophoresis system

Details Electrical potential configuration for an electrophoresis system Electrical potential configuration for an electrophoresis system

1992-07-14

1994-06-21

Niebling, John

Chemistry: electrical and wave energy

Apparatus

Coating, forming or etching by sputtering

C25B 900

Patent

active

053226070

ABSTRACT:
An electrophoresis system having separate internal and external voltage gradients that are vectorially coupled to determine zeta potential along the interior surface of a capillary column. The voltage gradient along the exterior of the capillary column is established such that the electrical potential at an on-column detection area is substantially equal to the electrical potential of a detector used to sense electrophoretic migration past the detection area. Typically, the capillary column is grounded at the point of detection, with the exterior voltage gradient being positive-going in one direction from the point of detection and being negative-going in the opposite direction.

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patent: 4842701 (1989-06-01), Smith et al.
patent: 4898658 (1990-02-01), Karger et al.
patent: 4936974 (1990-06-01), Rose et al.
patent: 4940883 (1990-07-01), Karger et al.
patent: 5021646 (1991-06-01), Weinberger et al.
patent: 5180475 (1993-01-01), Young et al.

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