Patent ID: 6190521
Filing Date: 2001-02-20
Classification: G01N

Abstract:
A method for introducing a sample into the separation capillary of a capillary zone electrophoresis apparatus comprising two reservoirs which contain a background electrolyte solution, the reservoirs being interconnected by a separation capillary which contains background electrolyte solution, electrodes located in the reservoirs, the electrodes being in contact with a high-voltage source; and a detector at the outlet end of the capillary, comprising:introducing the sample by means of a fixed or movable sample-injection capillaryplacing the sample-injection capillary in the vicinity of the inlet an end of the separation capillary of the capillary zone electrophoresis apparatus in such a manner that the sample solution being in the sample-injection capillary, or being injected therefrom, will surround the said inlet end entirely, andwithdrawing, after a predetermined times the sample-injection capillary from the vicinity of the inlet end of the separation capillary of the capillary zone electrophoresis apparatus, whereupon the sample solution will be replaced by the background solution.