GB1499651A - Electrochemical cells - Google Patents

Electrochemical cells

Info

Publication number
GB1499651A
GB1499651A GB4756975A GB4756975A GB1499651A GB 1499651 A GB1499651 A GB 1499651A GB 4756975 A GB4756975 A GB 4756975A GB 4756975 A GB4756975 A GB 4756975A GB 1499651 A GB1499651 A GB 1499651A
Authority
GB
United Kingdom
Prior art keywords
electrode
electrodes
carbon
electrolyte
gas
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.)
Expired
Application number
GB4756975A
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.)
Draegerwerk AG and Co KGaA
Original Assignee
Draegerwerk AG and Co KGaA
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 Draegerwerk AG and Co KGaA filed Critical Draegerwerk AG and Co KGaA
Publication of GB1499651A publication Critical patent/GB1499651A/en
Expired 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
    • G01N27/403—Cells and electrode assemblies
    • G01N27/404—Cells with anode, cathode and cell electrolyte on the same side of a permeable membrane which separates them from the sample fluid, e.g. Clark-type oxygen sensors
    • G01N27/4045—Cells with anode, cathode and cell electrolyte on the same side of a permeable membrane which separates them from the sample fluid, e.g. Clark-type oxygen sensors for gases other than oxygen

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 Non-Biological Materials By The Use Of Chemical Means (AREA)
  • Measuring Oxygen Concentration In Cells (AREA)

Abstract

1499651 Sulphur dioxide sensor DRAGERWERK AG 18 Nov 1975 [.18 Nov 1974] 47569/75 Heading G1N An electro-chemical sensor for determining sulphur dioxide (preferably in the presence of oxygen) comprises two electrodes, both contacting an electrolyte, the first electrode comprising carbon where it contacts the gas and the second electrode, when the electrodes are connected to a device for measuring current between them being substantially non polarized in operation and having a potential more positive than that of the first electrode. The first electrode carbon is preferably artificial graphite of surface area 1-20 m<SP>2</SP>/g. The second electrode may comprise platinum or a reversible redox system using an acid-insoluble organic species such as a quinone; chlorinated and/or condensed diphenoquinones being preferred. The electrodes may be rendered hydrophobic on the side which contacts the gas by, for example polytetrafluoroethylene. The electrolyte is a strong acid such as perchloric, phosphoric or sulphuric. It may be immobilized in, for example, micronized silica. As shown, carbon first electrode 3 and platinum second electrode 4 are electrically connected by current measuring device 5 and contain electrolyte 2 between them. A gas mixture 6 flows past the cell as shown by natural convection.
GB4756975A 1974-11-18 1975-11-18 Electrochemical cells Expired GB1499651A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742454659 DE2454659C3 (en) 1974-11-18 1974-11-18 Measuring cell for determining the sulfur dioxide content in gas mixtures

Publications (1)

Publication Number Publication Date
GB1499651A true GB1499651A (en) 1978-02-01

Family

ID=5931150

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4756975A Expired GB1499651A (en) 1974-11-18 1975-11-18 Electrochemical cells

Country Status (5)

Country Link
BE (1) BE834838A (en)
DE (1) DE2454659C3 (en)
FR (1) FR2291493A1 (en)
GB (1) GB1499651A (en)
NL (1) NL7511657A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2140566A (en) * 1983-05-26 1984-11-28 Teledyne Ind Powdered liquid electrolyte
GB2201787A (en) * 1987-03-02 1988-09-07 Atomic Energy Authority Uk Gas sensor

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1119249A (en) * 1979-03-30 1982-03-02 Ireq Institut De Recherche De L'hydro-Quebec Method and apparatus for mesuring a gaseous anhydride in a gas containing oxygen
DE3033796A1 (en) * 1980-09-09 1982-04-22 Bayer Ag, 5090 Leverkusen ELECTROCHEMICAL SENSOR FOR DETECTING REDUCING GASES, ESPECIALLY CARBON MONOXIDE, HYDRAZINE AND HYDROGEN IN AIR
DE3108889A1 (en) * 1981-03-09 1982-09-16 Kernforschungsanlage Jülich GmbH, 5170 Jülich ELECTROCHEMICAL GAS ANALYZER
DE3923717A1 (en) * 1989-07-18 1991-01-24 Draegerwerk Ag ELECTROCHEMICAL MEASURING CELL FOR DETECTING BLUE ACID OR SULFUR DIOXIDE

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3686091A (en) * 1970-10-02 1972-08-22 Beckman Instruments Inc Electrochemical cell
DE2240350B2 (en) * 1972-08-17 1974-07-18 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Device for determining the carbon monoxide content in gases and gas mixtures

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2140566A (en) * 1983-05-26 1984-11-28 Teledyne Ind Powdered liquid electrolyte
GB2201787A (en) * 1987-03-02 1988-09-07 Atomic Energy Authority Uk Gas sensor
EP0281247A2 (en) * 1987-03-02 1988-09-07 United Kingdom Atomic Energy Authority Gas sensors
EP0281247A3 (en) * 1987-03-02 1990-05-09 United Kingdom Atomic Energy Authority Gas sensors
GB2201787B (en) * 1987-03-02 1991-11-13 Atomic Energy Authority Uk Sensors

Also Published As

Publication number Publication date
FR2291493A1 (en) 1976-06-11
BE834838A (en) 1976-02-16
DE2454659B2 (en) 1980-09-25
DE2454659C3 (en) 1981-06-11
NL7511657A (en) 1976-05-20
DE2454659A1 (en) 1976-05-20

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee