Abstract 1. A detector cell for coulometric analysis of a sample liquid flowing therethrough using controlled potential coulometry, said cell comprising a vessel to be filled with an electrolyte solution, a working electrode arranged in said vessel, said working electrode being porous to allow passage of a sample liquid therethrough and having a plate-like shape, a pair of counterelectrodes each disposed in said vessel on each side of said working electrode, ion exchange membranes for preventing passage of said sample liquid and for allowing passage of ions from said electrolyte solution interposed between each of said counter-electrodes and said working electrode, said counterelectrodes also being porous to allow passage of said electrolyte solution therethrough and each of said ion exchange membranes being in contact with said working electrode and one of said counterelectrodes in such a way that there is substantially no space left between said electrodes and said membrane, sample inlet and outlet means provided in said vessel for leading the sample liquid to and away from said working electrode, electrolyte solution inlet and outlet means disposed in said vessel so that said electrolyte solution is passes through said counterelectrodes and means electrically connected to said counterelectrodes and to said working electrode for applying a constant voltage between said working electrode and said pair of counterelectrodes thereby electrolyzing said sample liquid, and means for measuring through said working electrode and said counterelectrodes of quantity of electricity caused by the electrolyzation of said sample liquid.
A detector cell for coulometric analysis of a sample liquid flowing therethrough using controlled potential coulometry, said cell comprising a vessel to be filled with an electrolyte solution, a working electrode arranged in said vessel, said working electrode being porous to allow passage of a sample liquid therethrough and having a plate-like shape, a pair of counterelectrodes each disposed in said vessel on each side of said working electrode, ion exchange membranes for preventing passage of said sample liquid and for allowing passage of ions from said electrolyte solution interposed between each of said counter-electrodes and said working electrode, said counterelectrodes also being porous to allow passage of said electrolyte solution therethrough and each of said ion exchange membranes being in contact with said working electrode and one of said counterelectrodes in such a way that there is substantially no space left between said electrodes and said membrane, sample inlet and outlet means provided in said vessel for leading the sample liquid to and away from said working electrode, electrolyte solution inlet and outlet means disposed in said vessel so that said electrolyte solution is passes through said counterelectrodes and means electrically connected to said counterelectrodes and to said working electrode for applying a constant voltage between said working electrode and said pair of counterelectrodes thereby electrolyzing said sample liquid, and means for measuring through said working electrode and said counterelectrodes of quantity of electricity caused by the electrolyzation of said sample liquid.
Claim 2
Dependent Claim
243 words
A detector cell for coulometric analysis of a sample liquid flowing therethrough using controlled potential coulometry, said cell comprising a vessel to be filled with an electrolyte solution, a working electrode arranged in said vessel, said working electrode being porous to allow passage of a sample liquid therethrough and having a plate-like shape, a pair of counterelectrodes each disposed in said vessel on each side of said working electrode, ion exchange membranes for preventing passage of said sample liquid and for allowing passage of ions from said electrolyte solution interposed between each of said counter-electrodes and said working electrode, said counterelectrodes also being porous to allow passage of said electrolyte solution therethrough and each of said ion exchange membranes being in contact with said working electrode and one of said counterelectrodes in such a way that there is substantially no space left between said electrodes and said membrane, sample inlet and outlet means provided in said vessel for leading the sample liquid to and away from said working electrode, electrolyte solution inlet and outlet means disposed in said vessel so that said electrolyte solution is passes through said counterelectrodes and means electrically connected to said counterelectrodes and to said working electrode for applying a constant voltage between said working electrode and said pair of counterelectrodes thereby electrolyzing said sample liquid, and means for measuring through said working electrode and said counterelectrodes of quantity of electricity caused by the electrolyzation of said sample liquid.