EP0827589A1 - Electrode de reference entierement solide - Google Patents

Electrode de reference entierement solide

Info

Publication number
EP0827589A1
EP0827589A1 EP96915229A EP96915229A EP0827589A1 EP 0827589 A1 EP0827589 A1 EP 0827589A1 EP 96915229 A EP96915229 A EP 96915229A EP 96915229 A EP96915229 A EP 96915229A EP 0827589 A1 EP0827589 A1 EP 0827589A1
Authority
EP
European Patent Office
Prior art keywords
electrode
membrane
electrically conductive
anion
cation
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Withdrawn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
EP96915229A
Other languages
German (de)
English (en)
Inventor
Kalman Nagy
Katrine Seip FÖRLAND
Kristin Eine
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.)
Sinvent AS
Original Assignee
Sinvent AS
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 Sinvent AS filed Critical Sinvent AS
Publication of EP0827589A1 publication Critical patent/EP0827589A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • G01N27/301—Reference electrodes

Definitions

  • An all-solid state reference electrode has several advantages over the conventional reference electrode with internal filling solution.
  • An all-solid state electrode can be miniaturized and is therefore well suited for micro as well as macro multi-sensor systems.
  • the all-solid state concept makes it easy to incorporate micro-electronics in the vicinity of the membrane.
  • An all-solid state electrode may also be exposed to higher and lower temperatures and pressures than the liquid based electrode, it may be fabricated in various shapes and sizes and is not restricted to be used vertically. There is no need for refilling of internal reference electrolyte in all-solid state electrodes.
  • the object of the present invention is to provide an all-solid state reference electrode that alleviates the problems with known partly solid state reference electrodes and enables production of small scale electrodes for use in e.g. in vivo analysis.
  • the typical field of application of the present all-solid state reference electrode is chemical and biological analyses in-vivo and in vitro, potentiometric and amperometric measurements as well as voltametric measurements etc.
  • Figure 2 illustrates response curves for the anion conducting electrodes indicated in Table 1 below, recorded with 10 "4 - 1C 1 M KNO 3 , in which the electrodes were used against a Radiometer Ag/AgCl-reference electrode,
  • the soluble polymeric ion-exchange material can be mixed directly with the membrane matrix and the remaining optional components or combined with a commercial solid ion- exchange material described above.
  • monomers for preparation of soluble cation-exchange polymers are 4-vinylbenzene sodium sulphonate, methacrylic acid, methacrylic acid/methyl methacrylate (50:50 co-polymer), 2-acrylamide-2-methyl-propane sulphonic acid, and 2-acrylamide-2-methylpropane sulphonic acid/methyl-methacrylate (50:50 co-polymer), in which the copolymer of methacrylic acid/methyl methacrylate (50:50) is preferred.
  • a suitable soluble anion-exchange polymer is N-(4-vinylbenzyl)- N,N-dimethyl amine.
  • the polymers are preferably pre-polymerized and supplied to the remaining membrane components in an organic solution.
  • the polymerisation degree is not critical, but the molecular weight should be sufficient to avoid scouring or similar of the ion- exchange material.
  • the soluble ion-exchange polymer is preferred since the material is soluble in organic solvents and therefore the active ion-exchange sites will be more uniformly dispersed in the membrane material, thus establishing a more ideal and reliable electrode.
  • Figure 2 shows the response curves of the all-solid state anion conducting electrode and the liquid based anion conducting electrode.
  • Figure 3 shows the calibration curves for the all-solid state anion and cation conducting electrodes.
  • the table illustrates the slopes obtained from the linear ranges of the calibration curves using an all-solid state reference electrode according to the invention, a two-part liquid based reference electrode and an Orion Fluoride combination electrode.
  • the reference electrodes were used against a F-selective electrode.
  • Response curves were recorded using 10 '5 - 10 1 M NaF; 0.1 M NaCl was used as the supporting electrolyte.
  • the linear range was 10 "5 - 10 "1 M NaF.
  • Fluoride-combination electrode - 59.7 i.e. Ag/AgCl-reference and a F " -selective el.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Molecular Biology (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

L'invention porte sur une électrode de référence entièrement solide pouvant par exemple servir pour des mesures de puissance, d'intensité, ou de tension et comprenant: une première et une seconde résistance (102a, 102b) respectivement reliées à un premier et un second conducteur (101a, 101b), un premier et un second élément conducteur (105a, 105b) revêtus extérieurement d'une première et d'une seconde couche électroconductrice solide (106a, 106b), dans lesquels les éléments conducteurs (105a, 105b) sont reliés aux bornes en attente de la première et de la deuxième résistance (102a, 102b) ou respectivement à l'extrémité libre desdits premier et second conducteurs (101a, 101b); et une première et une seconde membrane (107a, 107b) entourant respectivement lesdites première et seconde couches électroconductrices solides (106a, 106b). La première membrane (107a) comporte une matrice, un matériau échangeur d'ions et facultativement un sel lipophile, et la seconde (107b), une matrice, un matériau échangeur de cations et facultativement un sel lipophile; elles constituent ainsi respectivement une membrane conductrice d'anions (107a) et une membrane conductrice de cations (107b).
EP96915229A 1995-05-03 1996-04-23 Electrode de reference entierement solide Withdrawn EP0827589A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NO951705 1995-05-03
NO951705A NO951705D0 (no) 1995-05-03 1995-05-03 All-solid state reference electrode
PCT/NO1996/000093 WO1996035116A1 (fr) 1995-05-03 1996-04-23 Electrode de reference entierement solide

Publications (1)

Publication Number Publication Date
EP0827589A1 true EP0827589A1 (fr) 1998-03-11

Family

ID=19898174

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96915229A Withdrawn EP0827589A1 (fr) 1995-05-03 1996-04-23 Electrode de reference entierement solide

Country Status (5)

Country Link
EP (1) EP0827589A1 (fr)
JP (1) JPH11508994A (fr)
AU (1) AU5705096A (fr)
NO (1) NO951705D0 (fr)
WO (1) WO1996035116A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7318887B2 (en) 2003-10-08 2008-01-15 Honeywell International Inc. Solid state reference electrode
US7373195B2 (en) 2004-07-30 2008-05-13 Medtronic, Inc. Ion sensor for long term use in complex medium
EP2469275B1 (fr) 2010-12-24 2015-12-23 Honeywell Romania S.R.L. Capteur cantilever de dioxyde de carbone
CA3155604A1 (fr) * 2019-11-08 2021-05-14 Commonwealth Scientific And Industrial Research Organisation Electrode de reference a l'etat solide resistante aux interferences

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4653499A (en) * 1985-02-07 1987-03-31 Gould Inc. Solid phase electrode
US5078854A (en) * 1990-01-22 1992-01-07 Mallinckrodt Sensor Systems, Inc. Polarographic chemical sensor with external reference electrode

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9635116A1 *

Also Published As

Publication number Publication date
AU5705096A (en) 1996-11-21
WO1996035116A1 (fr) 1996-11-07
NO951705D0 (no) 1995-05-03
JPH11508994A (ja) 1999-08-03

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