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Electro-chemical sensor

  • US 7,901,555 B2
  • Filed: 12/22/2004
  • Issued: 03/08/2011
  • Est. Priority Date: 01/08/2004
  • Status: Active Grant
First Claim
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1. An electro-chemical sensor comprising:

  • at least a first and a second redox system, wherein the first and the second redox systems comprise different redox systems that are sensitive to the same species, and wherein the first and the second redox systems are coupled with a conductive substrate and configured to function in use as a working electrode;

    a counter electrode;

    a reference electrodemeans to apply a varying potential to the working electrode; and

    means to detect peaks in a current flowing between the working and counter electrode as the applied voltage is varied, wherein the peaks in the current flowing between the working and counter electrodes are produced by oxidation or reduction of the first and the second redox systems and wherein the first and the second redox systems produce peak current flows at different applied potentials.

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