EP0445260A1 - Materiau pour electrode, electrode, procede pour la fabrication et l'emploi de l'electrode - Google Patents

Materiau pour electrode, electrode, procede pour la fabrication et l'emploi de l'electrode

Info

Publication number
EP0445260A1
EP0445260A1 EP19900914174 EP90914174A EP0445260A1 EP 0445260 A1 EP0445260 A1 EP 0445260A1 EP 19900914174 EP19900914174 EP 19900914174 EP 90914174 A EP90914174 A EP 90914174A EP 0445260 A1 EP0445260 A1 EP 0445260A1
Authority
EP
European Patent Office
Prior art keywords
electrode
finely divided
electrode material
electrically conductive
activated carbon
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP19900914174
Other languages
German (de)
English (en)
Inventor
Ursula Bilitewski
Detlef Hanisch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Helmholtz Zentrum fuer Infektionsforschung HZI GmbH
Original Assignee
Helmholtz Zentrum fuer Infektionsforschung HZI GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Helmholtz Zentrum fuer Infektionsforschung HZI GmbH filed Critical Helmholtz Zentrum fuer Infektionsforschung HZI GmbH
Publication of EP0445260A1 publication Critical patent/EP0445260A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
    • C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
    • C12Q1/001—Enzyme electrodes
    • C12Q1/005—Enzyme electrodes involving specific analytes or enzymes
    • C12Q1/006—Enzyme electrodes involving specific analytes or enzymes for glucose
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
    • C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
    • C12Q1/001—Enzyme electrodes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
    • G01N27/28—Electrolytic cell components
    • G01N27/30—Electrodes, e.g. test electrodes; Half-cells
    • G01N27/308—Electrodes, e.g. test electrodes; Half-cells at least partially made of carbon

Definitions

  • Electrode material Electrode material, electrode, method of making and using the electrode
  • Glassy carbon electrodes are widely used for analytical purposes. Such electrodes can be obtained, for example, from Sigri (Meitingen) and Deutsche Metrohm (Filderstadt). These glassy carbon electrodes are often pretreated electrochemically before use. For the state of the art cf. for example, (1) to (18). One area of application that is becoming increasingly important is that of flow injection analysis (FIA). Certain limits on the usability of glassy carbon electrodes result, however, from the fact that these electrodes cannot be processed as desired and cannot be produced in any form.
  • FOA flow injection analysis
  • the invention now provides an electrode material which consists of an inert binder and a finely divided electrically conductive material or comprises them.
  • the inert binder can be a pourable binder, for example paraffin.
  • the finely divided electrically conductive material can be any suitable material.
  • the inert metal can be a metal of subgroup I or VIII of the periodic table, for example platinum or palladium.
  • an electrode which consists of an electrode material according to the invention or comprises this material.
  • the electrode according to the invention can be tubular. It can also be pretreated electrochemically. With regard to the prior art, reference is made to (1) to (18).
  • the electrode according to the invention can be covered with a semi-permeable membrane relative to the medium to be measured, which membrane includes with the electrode a reservoir for an indicator substance, for example an indicator enzyme.
  • the electrode according to the invention can have a conductor wire which is embedded in the electrode material.
  • the electrode according to the invention can be manufactured by (a) that an electrode material according to the invention is brought into a pourable state and then allowed to solidify or
  • the electrode according to the invention can advantageously be used in the FIA.
  • cf. for example (2), (3), (4) and (16).
  • the electrode according to the invention has the advantage that it is easy to machine and can be produced in almost any shape.
  • FIG. 1 shows an embodiment of an electrode according to the invention
  • an electrode material made of paraffin and palladium on activated carbon (palladium / activated carbon).
  • paraffin and palladium / activated carbon were mixed together in a mixing ratio of about 2: 1.
  • the mixture was liquefied and poured into the approximately candle-shaped electrode 1.
  • a silver wire 2 was inserted into the electrode material from the upper circular end face to about 1/4 the length of the electrode 1. After the electrode material solidified it was in the neighborhood An annular groove 3 is provided on the end face of the electrode 1 opposite the silver wire 2, this end face (if it was not already formed convex from the casting) being finished in a convex manner.
  • a membrane 5 is placed over this convex end face, which can consist of cellulose, for example, of a thickness of 20 ⁇ m and forms a flat reservoir 6 with the convex end face.
  • This reservoir 6, which is located under the membrane 5, is sealed with the aid of an O-ring 4 which lies in the annular groove 3.
  • the reservoir 6 can be filled with a buffer containing glucose oxidase (GOD).
  • GOD glucose oxidase
  • the electrode 11 is tubular. It in turn consists of a material based on paraffin and palladium / activated carbon.
  • This actual electrode 11 is surrounded by a protective jacket 17, which can be a PTFE tube.
  • a wire-shaped silver lead 12 is passed through this protective sheath 17 in order to make contact with the electrode 11.
  • a membrane 15 is drawn into the tube formed from the protective jacket 17 and the electrode 11, which forms an annular gap (not shown) with the electrode 11, in which there is an indicator substance.
  • the outer diameter of the electrode or electrode arrangement shown in FIG. 2, consisting of the actual electrode 11, membrane I ⁇ and protective jacket 17, can be, for example, 3 mm and the clear width, for example, 1.5 mm.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Zoology (AREA)
  • Wood Science & Technology (AREA)
  • Proteomics, Peptides & Aminoacids (AREA)
  • Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Immunology (AREA)
  • Analytical Chemistry (AREA)
  • Molecular Biology (AREA)
  • Microbiology (AREA)
  • Biophysics (AREA)
  • Biotechnology (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • General Engineering & Computer Science (AREA)
  • Genetics & Genomics (AREA)
  • Emergency Medicine (AREA)
  • Pathology (AREA)
  • General Physics & Mathematics (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
  • Electrodes For Compound Or Non-Metal Manufacture (AREA)

Abstract

Sont décrits un matériau pour électrode, une électrode, ainsi qu'un procédé pour sa fabrication et son emploi.
EP19900914174 1989-09-27 1990-09-27 Materiau pour electrode, electrode, procede pour la fabrication et l'emploi de l'electrode Withdrawn EP0445260A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19893932247 DE3932247A1 (de) 1989-09-27 1989-09-27 Elektrodenmaterial, elektroden, verfahren zur herstellung und verwendung der elektrode
DE3932247 1989-09-27

Publications (1)

Publication Number Publication Date
EP0445260A1 true EP0445260A1 (fr) 1991-09-11

Family

ID=6390303

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900914174 Withdrawn EP0445260A1 (fr) 1989-09-27 1990-09-27 Materiau pour electrode, electrode, procede pour la fabrication et l'emploi de l'electrode

Country Status (4)

Country Link
EP (1) EP0445260A1 (fr)
JP (1) JPH04504175A (fr)
DE (1) DE3932247A1 (fr)
WO (1) WO1991005247A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0594894B1 (fr) * 1992-10-28 1999-03-31 Alcatel Correction du décalage de la tension continue pour récepteur AMRT à conversion directe
ES2103197B1 (es) * 1995-08-04 1998-01-16 Univ Alcala Henares Pasta conductora, electrodos y sensores electroquimicos que comprenden dicha pasta conductora, y su metodo de preparacion.
ATE275723T1 (de) 1996-11-07 2004-09-15 Cambridge Sensors Ltd Elektroden und ihre verwendung in assays
DE10058746A1 (de) * 2000-11-27 2002-06-06 Inst Chemo Biosensorik Schlauchartige Elektrode
DE10112384A1 (de) * 2001-03-15 2002-09-26 Uwe Thomas Ultramikro-Elektrode

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH534356A (de) * 1969-04-25 1973-02-28 Perkin Elmer Corp Nichtpolarisierende, ionenselektive Elektrode
FR2262302A1 (en) * 1974-02-27 1975-09-19 Tacussel Jacques Membrane electrode contact - comprising a viscous mass of oil or grease packed with electrically conducting particles
DE2736243A1 (de) * 1977-06-08 1978-12-14 Crea Sa Messelektrode zur bestimmung des konzentrationsgrades von anionenbestandteilen in waessrigen loesungen, verfahren zur aktivierung der messelektrode und ihre verwendung
JPS5554502A (en) * 1978-10-16 1980-04-21 Nippon Mining Co Ltd Production of noble metal plated composite powder
DE2856251A1 (de) * 1978-12-27 1980-07-17 Max Planck Gesellschaft Fuellungen fuer indikatorraeume
FR2469202A1 (fr) * 1979-11-15 1981-05-22 Tacussel Jacques Cellules electrochimiques comportant des electrodes constituees par des materiaux composites
JPS5865561U (ja) * 1981-10-29 1983-05-04 オリンパス光学工業株式会社 イオン選択電極
DE3506659A1 (de) * 1985-02-26 1986-08-28 Basf Ag, 6700 Ludwigshafen Verbundelektrode
GB8710472D0 (en) * 1987-05-01 1987-06-03 Cambridge Life Sciences Amperometric method
DE3722019A1 (de) * 1987-07-03 1989-01-12 Varta Batterie Verfahren zur herstellung einer kunststoffgebundenen gasdiffusionselektrode, die einen manganoxidkatalysator der ueberwiegenden zusammensetzung mno(pfeil abwaerts)2(pfeil abwaerts)o(pfeil abwaerts)3(pfeil abwaerts)* x mn(pfeil abwaerts)5(pfeil abwaerts)o(pfeil abwaerts)8(pfeil abwaerts) enthaelt

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9105247A1 *

Also Published As

Publication number Publication date
JPH04504175A (ja) 1992-07-23
WO1991005247A1 (fr) 1991-04-18
DE3932247A1 (de) 1991-04-04

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