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Regeneration method and device

  • US 4,830,713 A
  • Filed: 07/28/1986
  • Issued: 05/16/1989
  • Est. Priority Date: 08/26/1985
  • Status: Expired due to Term
First Claim
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1. A method of regenerating an amperometric cell comprising at least two probe electrodes including at least one working electrode and at least one counter electrode, each of said electrode having an exposed surface for contact with a cell electrolyte provided within a cell space bounded by a membrane;

  • said amperometric cell having, during electroanalysis, an operative current range limited by a maximum current density at said at least one working electrode;

    said method comprising the steps of;

    removing said membrane and said cell electrolyte from said amperometric cell and placing at least said at least two probe electrodes into contact with a regeneration electrolyte;

    placing a regenerator electrode into contact with said regeneration electrolyte;

    connecting said regenerator electrode and at least one of said at least two probe electrodes in circuit with a common electric power source and thereby subjecting said at least one of said at least two probe electrodes while in contact with said regeneration electrolyte, to a regeneration current at a current density which is substantially higher than said limited maximum current density in said amperometric cell during electroanaylsis;

    said higher current density being generated by said regeneration current at said at least one probe electrode and said regenerator electrode;

    maintaining said regeneration current at said higher current density at said at least one probe electrode; and

    thereafter removing said regeneration electrolyte from said at least two probe electrodes and refitting said membrane and said cell electrolyte to said amperometric cell.

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