Patent ID: 6235197
Filing Date: 2001-05-22
Classification: B01D,B01J,G01N

Abstract:
A method of ion chromatography using mobile phase neutralization comprising:(a) flowing a mobile phase comprising interfering ions and sample ions through a neutralizer ion exchange resin comprising neutralization ions selected from the group consisting of hydronium ions and hydroxide ions thereby at least partially exhausting the neutralizer ion exchange resin and generating a neutralizer effluent comprising the sample ions;(b) flowing the neutralizer effluent to an analytical column and separating the sample ions;(c) flowing the sample ions to a detector and detecting the sample ions; and(d) after the completion of step (a) applying an electrical potential through the at least partially exhausted neutralizer ion exchange resin while flowing an aqueous liquid stream therethrough to electrolyze water thereby regenerating the neutralizer ion exchange resin, the application of the electrical potential being discontinued during step (a).