Capillary electrophoresis injection device and method

Details Capillary electrophoresis injection device and method Capillary electrophoresis injection device and method

1990-01-26

1992-08-25

Niebling, John

Chemistry: electrical and wave energy

Apparatus

Coating, forming or etching by sputtering

2041801, G01N 2726, B01D 5702

Patent

active

051416212

ABSTRACT:
An apparatus and method useful for sample injection in capillary electrophoresis is disclosed. The apparatus comprises an interface device with capillary and tubing inserted therein. Sample is injected through the tubing into the interface and is thereafter introduced into the capillary column in which the capillary electrophoresis separation is performed. The apparatus introduces precise amounts of sample into the capillary and the interface can be designed for split flow or direct sample introduction. Employing the interface device, the injection method permits samples to be introduced into capillaries without the need to disengage or to alter the electric field. The method is suited for adaptation with autosamplers or auto-injection systems.

REFERENCES:
patent: 4676897 (1987-06-01), Kuze et al.
F. M. Everaerts et al. "Simple Sampling Device for Capillary Isotachophoresis and Capillary Zone Electrophoresis" Journal of Chromatography, 452 (1988) 615-622.
P. Bozek et al. "Electric Sample Splitter for Capillary Electrophoresis" Journal of Chromatography 320 (1985) 159-165.
Joe Tehrani et al. "Capillary Electrophoresis: An Integrated System with a Unique Split-Flow Sample Introduction Mechanism" Journal of High Resolution Chromatography, vol. 14 (Jun. 1991) 10-14.
Takao Tsuda et al., "Rotary-Type Injector for Capillary Zone Electrophoresis" Analytical Chemistry, vol. 59, No. 5 (1987) 799-800.

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