G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 30/34 (2006.01) G01N 30/96 (2006.01) G01N 30/02 (2006.01) G01N 30/60 (2006.01)
Patent
CA 2087481
A method of streamlining and lowering the cost of operation of ion chromatography as well as improving detection limits is disclosed. The apparatus includes chromatographic separating means through which a sample is eluted in an fluent solution including an electrolyte. The apparatus includes suppressor means having a chromatography effluent compartment means separated from a detector effluent compartment means by an ion exchange membrane, forming a chromatography effluent flow channel and a detector effluent channel, respectively. Electrode means are disposed in communication with both flow channels for passing an electric current transverse to the solution that is passing through them. The chromatography effluent flows through the chromatography effluent flow channel of the suppressor and through detector means which detects resolved ionic species therein. The effluent from the detector means is then recycled through the detector effluent flow channel and forms a sump for electrolyte ions passing across the chromatography effluent as well as supplying the water for the electrolysis reaction generating acid (or base) for suppression.
Barreto Victor M.
Friedman Keith A.
Rabin Steven B.
Stillian John R.
Toofan Mahmood
Dionex Corporation
Smart & Biggar
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