Patent ID: 6811689
Filing Date: 2004-11-02
Classification: B01D,B01J,G01N,H01J

Abstract:
An electrospray device comprising:a substrate having: a) an injection surface; b) an ejection surface opposing the injection surface, wherein the substrate has at least one spray unit which comprises: an entrance orifice on the injection surface, an exit orifice on the ejection surface, a channel extending through the substrate between the entrance orifice and the exit orifice, and a recess extending into the ejection surface and surrounding the exit orifice; c) polymerized separation material comprising affinity chromatographic adsorbent, wherein the separation material is associated with said electrospray device at a location suitable to effect chromatographic separation of analytes passing through said electrospray device; and d) an electric field generating source positioned to define an electric field surrounding at least one exit orifice.