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US4549953: Ion-selective electrodes

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Filing Information

Inventor(s) John N. Driscoll · Edwards S. Atwood ·
Assignee(s) HNU Systems, Inc. ·
Primary Examiner Kaplan; G. L. ·
Application Number US6644772
Filing date 08/27/1984
Issue date 10/29/1985
Predicted expiration date 05/19/2003
U.S. Classifications 204/419  · 423/508  ·
International Classifications G01N 2730  ·
Kind CodeA
International Classifications 204419 ·
Related U.S. Application DataBACKGROUND OF THE INVENTION
This application is a continuation-in-part of U.S. Application Ser. No. 496,113, filed May 19, 1983 and now abandoned.
10 Claims, No Drawings


Abstract

Electrochemical cell including an ion-specific membrane containing, in one aspect, Ag, S, and Sb and in another aspect a ternary compound of Ag, S and one of As, Sb, Se and Te. Methods are disclosed for making ternary compounds of Ag, S and one of Se, Sb, Te and As.

Independent Claims | See all claims (10)

  1. 1. An electrochemical cell comprising a reference electrode, an electrolyte, and an ion specific membrane, arranged to detect an ion in a solution, said ion specific membrane containing Ag, S, and Sb.
  2. 3. An electrochemical cell comprising a reference electrode, an electrolyte, and an ion specific membrane, arranged to detect an ion in solution, said ion specific membrane comprising a ternary compound of Ag, S, and one of As, Sb, Se, or Te.
  3. 8. An electrochemical cell comprising a reference electrode, an electrolyte, and an ion specific membrane, arranged to detect an ion in solution, said ion specific membrane containing Ag, S, and one of Sb, Te, As, or Se, said membrane being formed by a process comprisingcombining an aqueous solution of silver salt with an aqueous solution of a compound containing S and one of Se, Sb, Te, or As to form a precipitate containing Ag, S, and one of Se, Sb, Te, or As, andsubjecting said precipitate to elevated pressure at a temperature lower than 100.degree. C. to form said membrane.
  4. 9. A method of making an ion specific membrane for use in an electrochemical cell comprisingcombining an aqueous solution of a silver salt with an aqueous solution of a compound containing s and one of Se, Sb, Te, or As to form a precipitate containing Ag, S, and one of Se, Sb, Te, or As, andsubjecting said precipitate to elevated pressure at a temperature lower than 100.degree. C. to form said membrane.

References Cited

U.S. Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
US3563874 ORION RESEARCH Ross et al. Feb 1971
US3696038 PHILIP HYWEL DAVIES Davies et al. Oct 1972
US3806438 MATSUSHITA ELECTRIC IND CO LTD Higashiyama et al. Apr 1974
US3809636 MATSUSHITA ELECTRIC IND CO LTD Higashiyama et al. May 1974
US4071427 Curators of the University of Missouri Cheng et al. Jan 1978
US4172778 U.S. Philips Corporation van de Leest et al. Oct 1979
US4396486 Graphic Controls Corporation Mruk et al. Aug 1983

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