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GB2297172A - Analysis of liquid solutions - Google Patents

Analysis of liquid solutions

Info

Publication number
GB2297172A
GB2297172A GB9601835A GB9601835A GB2297172A GB 2297172 A GB2297172 A GB 2297172A GB 9601835 A GB9601835 A GB 9601835A GB 9601835 A GB9601835 A GB 9601835A GB 2297172 A GB2297172 A GB 2297172A
Authority
GB
United Kingdom
Prior art keywords
electrode
active surface
sensor element
sensor
vibrated
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Withdrawn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
GB9601835A
Other versions
GB9601835D0 (en
Inventor
David Edward Williams
Peter Mcgeehin
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.)
Capteur Sensors and Analysers Ltd
Original Assignee
Capteur Sensors and Analysers Ltd
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
Priority claimed from GB939315765A external-priority patent/GB9315765D0/en
Priority claimed from GB9410547A external-priority patent/GB9410547D0/en
Application filed by Capteur Sensors and Analysers Ltd filed Critical Capteur Sensors and Analysers Ltd
Publication of GB9601835D0 publication Critical patent/GB9601835D0/en
Publication of GB2297172A publication Critical patent/GB2297172A/en
Withdrawn legal-status Critical Current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
    • G01N27/283—Means for supporting or introducing electrochemical probes

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

Low concentrations of target species in liquid solutions are analysed using a simple, disposable, electrode sensor element (1) in the form of a flat strip (10) of insulating substrate material with one or more flat electrodes (12) printed on it. The electrode is overlaid with an insulating layer (14) which as a through aperture (16) exposing an active surface (18) of the working electrode (12). The area of the active surface is precisely known. In use, the electrode is vibrated in a plane normal to the plane of the substrate. In preferred arrangements this vibration is intermittent. The sensor, vibrated at a known frequency, produces a stable and repeatable current signal representing concentration of the solution. Any reagents necessary are incorporated in the disposable sensor element as supplied, in a further coating (20) which dissolves when the sensor element is immersed in the solution. Such a coating can also be used to prevent contamination of the active surface (18) before use. The sensor elements may be made in a form in which the electrode working surfaces are exposed only when the element is broken off a larger body, which may be a continuous tape or strip.
GB9601835A 1993-07-30 1994-08-01 Analysis of liquid solutions Withdrawn GB2297172A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB939315765A GB9315765D0 (en) 1993-07-30 1993-07-30 Electrochemical sensor and method of use,for analysis of low concentrations of electroactive species in solution,particularly chlorine in water
GB9410547A GB9410547D0 (en) 1994-05-26 1994-05-26 Analysis of liquid solutions
PCT/GB1994/001690 WO1995004271A1 (en) 1993-07-30 1994-08-01 Analysis of liquid solutions

Publications (2)

Publication Number Publication Date
GB9601835D0 GB9601835D0 (en) 1996-04-03
GB2297172A true GB2297172A (en) 1996-07-24

Family

ID=26303299

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9601835A Withdrawn GB2297172A (en) 1993-07-30 1994-08-01 Analysis of liquid solutions

Country Status (2)

Country Link
GB (1) GB2297172A (en)
WO (1) WO1995004271A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8277618B2 (en) 2006-05-19 2012-10-02 The University Of Liverpool Electrochemical cell

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8927377D0 (en) * 1989-12-04 1990-01-31 Univ Edinburgh Improvements in and relating to amperometric assays
GB9407929D0 (en) * 1994-04-21 1994-06-15 Capteur Sensors & Analysers Electrochemical analysis of liquid streams
GB0208095D0 (en) * 2002-04-09 2002-05-22 Dobson John V Electrochemical sensor system and sensing method
EP1406085A1 (en) * 2002-10-01 2004-04-07 Metrohm Ag Electrode, electrode element, methods of their fabrication and use of said electrode
CA2783826A1 (en) * 2009-12-10 2011-06-16 Analytical Instrument Systems, Inc. Sensor arrangement with snap-off segments
EP2980576A1 (en) * 2014-07-31 2016-02-03 Electrochemical Sensor Technological (EST) Limited Electrochemical sensor system and sensing method
IT201700046831A1 (en) 2017-05-03 2018-11-03 Tecnosens S R L New nano and / or microstructured printed sensors.
CN110596211B (en) * 2019-10-22 2024-07-02 南方科技大学 Vibration flat plate electrode connector

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0122420A2 (en) * 1983-04-11 1984-10-24 Roche Diagnostics GmbH Electrode arrangement for the electrochemical analysis of the electrolytic component of a liquid
DE4040293A1 (en) * 1990-12-17 1992-06-25 Paedagogische Hochschule Halle Single-dimension vibration electrode drive mechanism - uses vibrating loudspeaker membranes mechanically coupled to vibration electrode
EP0504730A2 (en) * 1991-03-22 1992-09-23 Seiko Instruments Inc. Electrochemical measurement system
WO1992021961A1 (en) * 1991-06-05 1992-12-10 Capteur Sensors & Analysers Ltd. Electro-analysis of liquids and sensing elements for use therein

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0122420A2 (en) * 1983-04-11 1984-10-24 Roche Diagnostics GmbH Electrode arrangement for the electrochemical analysis of the electrolytic component of a liquid
DE4040293A1 (en) * 1990-12-17 1992-06-25 Paedagogische Hochschule Halle Single-dimension vibration electrode drive mechanism - uses vibrating loudspeaker membranes mechanically coupled to vibration electrode
EP0504730A2 (en) * 1991-03-22 1992-09-23 Seiko Instruments Inc. Electrochemical measurement system
WO1992021961A1 (en) * 1991-06-05 1992-12-10 Capteur Sensors & Analysers Ltd. Electro-analysis of liquids and sensing elements for use therein

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
Analytical Chemistry, Vol. 59, 1987, pages 2692-2699 *
IEEE Transactions on Bio-medical Engineering, Vol. BME-34, No. 9, Sept 1987, pages 657-663. *
Review of Scientific Instruments, Vol. 59, No. 5, May 1988, pages 787-792 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8277618B2 (en) 2006-05-19 2012-10-02 The University Of Liverpool Electrochemical cell

Also Published As

Publication number Publication date
GB9601835D0 (en) 1996-04-03
WO1995004271A1 (en) 1995-02-09

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)