Electrochemical sensing of carbon monoxide
First Claim
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1. A method for detecting the presence of a plurality of toxic agents comprising the steps of:
- providing electrochemical cell means having an electrode configuration comprising a plurality of electrodes including a platinum working electrode, a platinum counter electrode and an Ag/Ag+ reference electrode;
providing a nonaqueous gelled aprotic electrolyte solution in the electrochemical cell means, said solution comprising an aprotic organic solvent selected from the group consisting of γ
-butyrolactone and propylene carbonate, an amount of lithium perchlorate electrolyte and polyethylene oxide gelling agent;
exposing the electrochemical cell means to an atmosphere suspected of containing the gas of interest;
providing electrical source means and connecting the source means to the electrode configuration to energize the cell means; and
providing means for measuring the current flowing between said sensing electrode and said counter electrode.
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Abstract
Apparatus and method for an electrochemical sensor for carbon monoxide detection in a gelled aprotic organic nonaqueous electrolyte solution.
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Citations
17 Claims
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1. A method for detecting the presence of a plurality of toxic agents comprising the steps of:
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providing electrochemical cell means having an electrode configuration comprising a plurality of electrodes including a platinum working electrode, a platinum counter electrode and an Ag/Ag+ reference electrode; providing a nonaqueous gelled aprotic electrolyte solution in the electrochemical cell means, said solution comprising an aprotic organic solvent selected from the group consisting of γ
-butyrolactone and propylene carbonate, an amount of lithium perchlorate electrolyte and polyethylene oxide gelling agent;exposing the electrochemical cell means to an atmosphere suspected of containing the gas of interest; providing electrical source means and connecting the source means to the electrode configuration to energize the cell means; and providing means for measuring the current flowing between said sensing electrode and said counter electrode.
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2. An electrochemical sensor for toxic gas detection comprising:
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electrochemical cell means having therein an electrode configuration comprising a plurality of electrodes including a platinum working electrode, a platinum counter electrode and an Ag/Ag+ reference electrode; a nonaqueous gelled aprotic electrolyte solution in said cell means, said electrolyte solution comprising an aprotic organic solvent selected from the group consisting of γ
-butyrolactone and propylene carbonate, an amount of lithium perchlorate electrolyte and an amount of polyethylene oxide gelling agent;adjustable potential electrical source means, to energize said electrochemical cell means at desired potentials, connected across said working and counter electrodes; and current measuring means connected across said working and counter electrodes. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An electrochemical sensor for toxic gas detection comprising:
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electrochemical cell means having therein an electrode configuration comprising a plurality of electrodes including a platinum electrode working, a platinum counter electrode and an Ag/Ag+ reference electrode; a nonaqueous gelled aprotic electrolyte solution in said cell means, said solution comprising an aprotic organic solvent selected from the group consisting of γ
-butyrolactone and propylene carbonate, an electrolyte comprising an amount of lithium perchlorate and an amount of tetraethylammonium perchlorate and an amount of polyethylene oxide gelling agent;adjustable potential electrical source means, to energize said electrochemical cell means at desired potentials, connected across said working and counter electrodes; and current measuring means connected across said working and counter electrodes. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification