Patent ID: 6863790
Filing Date: 2005-03-08
Classification: G01N,H01J

Abstract:
1. A method for chemically analyzing a chemical or biological sample using capillary electrophoresis/electrospray ionization-mass spectrometry, comprising the steps of: providing a capillary column having a wall and at least one electrode inside the capillary column, the at least one electrode being attached via an opening in the wall of the capillary column and extending longitudinally within the capillary column; providing a mass spectrometer in operable relation to the capillary column; applying a voltage potential across the capillary column; injecting a mixture containing the chemical or biological sample into the capillary column; transporting at least a portion of the mixture to the mass spectrometer; and analyzing the portion with the mass spectrometer to identify the composition of the chemical or biological sample in the portion.