Patent ID: 8415168
Filing Date: 2013-04-09
Classification: B01D,G01N

Abstract:
1. In a method for capillary ion chromatography, the steps of: (a) in a device comprising an electrolytically-regenerated suppressor comprising flow-through ion exchange packing in a housing including a packing inlet and a packing outlet, and capillary tubing having an inlet and an outlet and formed of a permselective ion exchange membrane, said tubing being at least partially disposed in said ion exchange packing, and spaced first and second flow through electrodes on opposed sides of said ion exchange packing, wherein said packing inlet is fitted with said first flow through electrode and said packing outlet is fitted with said second flow through electrode, flowing an aqueous sample stream including separated sample ionic species of one charge, positive or negative, in an eluent, through the capillary tubing, and transporting counterions in said eluent of opposite charge to said sample ionic species across said tubing from an inner tubing wall to an outer tubing wall thereof, and (b) flowing an aqueous regenerant liquid through said ion exchange packing past the outside of said tubing to carry away the transported counterions transported to said outer tubing wall.