GB1382873A - Electrode for potentiometric measurements - Google Patents

Electrode for potentiometric measurements

Info

Publication number
GB1382873A
GB1382873A GB163772A GB163772A GB1382873A GB 1382873 A GB1382873 A GB 1382873A GB 163772 A GB163772 A GB 163772A GB 163772 A GB163772 A GB 163772A GB 1382873 A GB1382873 A GB 1382873A
Authority
GB
United Kingdom
Prior art keywords
electrode
active material
agi
graphite
jan
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
GB163772A
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.)
Radiometer AS
Original Assignee
Radiometer 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 Radiometer AS filed Critical Radiometer AS
Publication of GB1382873A publication Critical patent/GB1382873A/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
    • G01N27/28—Electrolytic cell components
    • G01N27/30—Electrodes, e.g. test electrodes; Half-cells

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

1382873 Electrode construction RADIOMETER AS 13 Jan 1972 [13 Jan 1971] 1637/72 Addition to 1262019 Heading G1N An electrode comprises an electrically conductive body 20 of a mixture of graphite and a thermoplastic polymer hydrophobizing the graphite and has a surface 26 to contact a liquid sample and a solid electrical conductor 16 engaging the body remote from the surface 26. A redox or ion selective substance is preferably applied on the surface 26 or disposed throughout the body, preferably so that its concentration is a maximum at the surface 26. The electrode may be enclosed in a polymer tube of e.g. PTFE. The thermoplastic polymer is preferably PTFE, PVC or polyethylene, and the electrode may be made by compression moulding. The layer of active material may be applied by deposition from a solution or in solid form by grinding the end of the electrode, rubbing in the active material powder and polishing, preferably on a heated surface. Redox sensors may use platinum, gold or unhydrophobized graphite as active material. Ion selective electrodes may use as active material AgI/Ag 2 S in proportions between 8:1 and 1:8 (for Ag<SP>+</SP> and I<SP>-</SP>); Ag Br or Ag Br/Ag 2 S (for Ag<SP>+</SP> and Br<SP>-</SP>); AgI or AgI/Ag 2 S (for Ag<SP>+</SP> and I<SP>-</SP>); Hg or Hg S (for Hg<SP>2+</SP>); Cu or Cu S or Cu S/Hg S 1:1 or Cu S/Ag 2 S 1:1 or Cu S/Cd S 1:1 or Cu (diethyldithiocarbomate) 2 or Cu Se/ Cu 2 Se 1:2 or Cu S/Ag 2 S/Cd S 10:10:1 (for Cu<SP>2+</SP>); Pb S/Ag 2 S 1:1 (for Pb<SP>2+</SP>); Cd S/Ag 2 S 1:1 (for Cd<SP>2+</SP>); Zn S/Ag 2 S and calcium wolfromate.
GB163772A 1971-01-13 1972-01-13 Electrode for potentiometric measurements Expired GB1382873A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK12071 1971-01-13

Publications (1)

Publication Number Publication Date
GB1382873A true GB1382873A (en) 1975-02-05

Family

ID=8089968

Family Applications (1)

Application Number Title Priority Date Filing Date
GB163772A Expired GB1382873A (en) 1971-01-13 1972-01-13 Electrode for potentiometric measurements

Country Status (1)

Country Link
GB (1) GB1382873A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2425639A1 (en) * 1978-05-10 1979-12-07 Fresenius Chem Pharm Ind ELECTROCHEMICAL DETECTOR FOR SELECTIVE MEASUREMENT OF ION ACTIVITY
US5739039A (en) * 1989-12-04 1998-04-14 Ecossensors Limited Microelectrodes and amperometric assays

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2425639A1 (en) * 1978-05-10 1979-12-07 Fresenius Chem Pharm Ind ELECTROCHEMICAL DETECTOR FOR SELECTIVE MEASUREMENT OF ION ACTIVITY
US5739039A (en) * 1989-12-04 1998-04-14 Ecossensors Limited Microelectrodes and amperometric assays

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Legal Events

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