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Carbon micro-sensor electrode and method for preparing it

  • US 5,281,319 A
  • Filed: 06/29/1992
  • Issued: 01/25/1994
  • Est. Priority Date: 07/09/1991
  • Status: Expired due to Term
First Claim
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1. A method for preparing a carbon microsensor electrode which comprises the steps of extruding, into a wire form having a desired diameter, a composition prepared by highly dispersing and mixing a crystalline carbon fine powder with an organic binder;

  • calcining the wire up to a high temperature in an inert atmosphere or a non-oxidizing atmosphere to carbonize the contained organic binder and to thereby form the pure composite carbon wire having many micropores extending to its surface and interior; and

    then subjecting the carbon wire having many micropores to impregnation, adsorption, chemical modification or a combination thereof with a reactant which comprises at least one reactant selected from the group consisting of an enzyme, a metal complex compound, a reactant organic compound and a metabolite.

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