Electrochemical sensor
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United States of America Patent
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Dec 26, 2017
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app pub date -
Nov 22, 2013
filing date -
Nov 22, 2012
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Abstract
An electrochemical ion sensor and a method for sensing a presence of at least one ion species in a solution are provided. The electrochemical sensor includes a solid-state electrolyte medium doped with an organometallic material, having an electrochemical affinity with the ion species, and a pair of electrodes electrically contacting the solid-state electrolyte. The electrochemical sensor also includes an electrical circuit configured to drive the pair of electrodes with an AC electrical excitation and to measure at least one parameter related to a complex electrical impedance of the doped solid-state electrolyte medium in response to the AC electrical excitation. The parameter may be an electrical resistance, an inductance or a combination of both, and represents the presence of the ion species in the solution when the solid-state electrolyte medium is exposed to the solution.
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