Patent ID: 7402283
Filing Date: 2008-07-22
Classification: B01D,G01N,Y10T

Abstract:
1. Apparatus comprising: (a) a source of first ions in a substantially non-flowing solution adjacent an aqueous liquid in a first acid or base generation zone, said first ion source and first zone being separated by a first barrier portion substantially preventing liquid flow through the first barrier portion and transporting ions only of the same charge as said first ions, (b) a source of second ions of opposite charge to said first ions in a substantially non-flowing solution adjacent an aqueous liquid in a second acid or base generation zone, said second ion source and second zone being separated by a second barrier portion substantially preventing liquid flow through the second barrier portion and transporting ions only of the same charge as said second ions, said second barrier portion being of opposite charge to said first barrier portion, said first and second generation zones being in fluid communication with each other, whereby first ions and second ions generated in said respective zones can mix in a mixing chamber having an outlet, optionally comprising one of said first or second zones, to form a salt-containing solution therein suitable for use as an eluent for liquid chromatography, (c) a first electrode in electrical communication with said first zone and a second electrode in electrical communication with said second zone, said first and second electrodes being disposed so that, when attached to a power source, current passes between said first and second electrodes through said first and second zones, and (d) a chromatographic separator in fluid communication with the outlet of said mixing chamber.