GB1531761A - Electrochemical detector system - Google Patents

Electrochemical detector system

Info

Publication number
GB1531761A
GB1531761A GB1313675A GB1313675A GB1531761A GB 1531761 A GB1531761 A GB 1531761A GB 1313675 A GB1313675 A GB 1313675A GB 1313675 A GB1313675 A GB 1313675A GB 1531761 A GB1531761 A GB 1531761A
Authority
GB
United Kingdom
Prior art keywords
electrode
sensor electrode
nozzle
voltage
preferably
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
GB1313675A
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.)
EDT SUPPLIES Ltd
Original Assignee
EDT SUPPLIES 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
Application filed by EDT SUPPLIES Ltd filed Critical EDT SUPPLIES Ltd
Priority to GB1313675A priority Critical patent/GB1531761A/en
Publication of GB1531761A publication Critical patent/GB1531761A/en
Application status is Expired legal-status Critical

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means
    • G01N27/26Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
    • G01N27/403Cells and electrode assemblies
    • G01N27/404Cells 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
    • G01N27/4045Cells 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
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means
    • G01N27/26Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
    • G01N27/28Electrolytic cell components
    • G01N27/30Electrodes, e.g. test electrodes; Half-cells
    • G01N27/38Cleaning of electrodes

Abstract

1531761 Electro-chemical detector EDT SUPPLIES Ltd 30 June 1976 [1 April 1975] 13136/76 Heading G1N An electro-chemical detector comprises a thinlayer flow cell in which a solution line 2 terminates in a fine nozzle 7 located normal to but spaced from a surface of a sensor electrode 3 and a control unit which applies a periodically changing voltage to the sensor electrode, the voltage having a first portion functioning as a detecting potential and a second portion functioning as a cleaning potential. The sensor electrode surface is planar and may be a disc, ring or split ring of, preferably vitreous carbon or of platinum, gold or graphite carbon. The distance between it and the nozzle can be altered. A reference electrode and optionally a counter electrode are provided downstream of the sensor electrode. The voltage is preferably a squarewave of variable amplitude, frequency and mark-space ratio. Measurement is preferably carried out during a small part of the detecting portion, towards the end thereof. The solution determined may be the effluent from a high performance, high-pressure liquid chromatography column. As shown, liquid enters the cell via pipe 2 and is directed via nozzle 7 on to sensor electrode 3. The liquid leaves the cell via outlet 4, contacting tubular counter electrode 6 and reference electrode 5 (via salt-bridge leak 10) on the way. The jetsensor electrode distance is adjustable by moving screw threaded electrode support 9. Control unit 11 is connected to the electrodes and to a recorder 12.
GB1313675A 1976-06-30 1976-06-30 Electrochemical detector system Expired GB1531761A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1313675A GB1531761A (en) 1976-06-30 1976-06-30 Electrochemical detector system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1313675A GB1531761A (en) 1976-06-30 1976-06-30 Electrochemical detector system

Publications (1)

Publication Number Publication Date
GB1531761A true GB1531761A (en) 1978-11-08

Family

ID=10017495

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1313675A Expired GB1531761A (en) 1976-06-30 1976-06-30 Electrochemical detector system

Country Status (1)

Country Link
GB (1) GB1531761A (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0103109A1 (en) * 1982-07-30 1984-03-21 Siemens Aktiengesellschaft Method of determining sugar concentration
US4505784A (en) * 1981-07-29 1985-03-19 Siemens Aktiengesellschaft Method for urea analysis
FR2572532A1 (en) * 1984-10-30 1986-05-02 Outokumpu Oy Method for measuring and adjusting electrochemical potential and / or component concentration in the treatment of value materials
EP0226768A2 (en) * 1985-12-23 1987-07-01 Environmental Technologies Group, Inc. Method and apparatus for operating electrochemical detector cell
US4705617A (en) * 1983-05-06 1987-11-10 Sensormedics Corporation Apparatus for deplating cutaneous gas sensors
US4853091A (en) * 1984-08-10 1989-08-01 Siemens Aktiengesellschaft Method and apparatus for the electrochemical determination of oxygen concentration
US4917774A (en) * 1986-04-24 1990-04-17 Shipley Company Inc. Method for analyzing additive concentration
US4950378A (en) * 1987-07-17 1990-08-21 Daikin Industries, Ltd. Biosensor
US4988418A (en) * 1988-03-18 1991-01-29 Hagen Batterie Ag Method of electrically measuring the concentration of acids
US5064516A (en) * 1987-07-16 1991-11-12 Gas Research Institute Measuring gas levels
US5288387A (en) * 1990-06-12 1994-02-22 Daikin Industries, Ltd. Apparatus for maintaining the activity of an enzyme electrode
US5352349A (en) * 1989-08-30 1994-10-04 Daikin Industries, Ltd. Method for reviving an electrode of a biosensor
US5431789A (en) * 1991-07-29 1995-07-11 Board Of Regents Of The University Of Wisconsin System Of Behalf Of The University Of Wisconsin-Milwaukee Determination of organic compounds in water

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4505784A (en) * 1981-07-29 1985-03-19 Siemens Aktiengesellschaft Method for urea analysis
EP0103109A1 (en) * 1982-07-30 1984-03-21 Siemens Aktiengesellschaft Method of determining sugar concentration
US4705617A (en) * 1983-05-06 1987-11-10 Sensormedics Corporation Apparatus for deplating cutaneous gas sensors
US4853091A (en) * 1984-08-10 1989-08-01 Siemens Aktiengesellschaft Method and apparatus for the electrochemical determination of oxygen concentration
FR2572532A1 (en) * 1984-10-30 1986-05-02 Outokumpu Oy Method for measuring and adjusting electrochemical potential and / or component concentration in the treatment of value materials
EP0226768A2 (en) * 1985-12-23 1987-07-01 Environmental Technologies Group, Inc. Method and apparatus for operating electrochemical detector cell
US4735691A (en) * 1985-12-23 1988-04-05 Allied Corporation Method for operating electrochemical detector cell
EP0226768A3 (en) * 1985-12-23 1989-10-11 Allied Corporation Method and apparatus for operating electrochemical detector cell
US4917774A (en) * 1986-04-24 1990-04-17 Shipley Company Inc. Method for analyzing additive concentration
US5064516A (en) * 1987-07-16 1991-11-12 Gas Research Institute Measuring gas levels
US4950378A (en) * 1987-07-17 1990-08-21 Daikin Industries, Ltd. Biosensor
US4988418A (en) * 1988-03-18 1991-01-29 Hagen Batterie Ag Method of electrically measuring the concentration of acids
US5352349A (en) * 1989-08-30 1994-10-04 Daikin Industries, Ltd. Method for reviving an electrode of a biosensor
US5288387A (en) * 1990-06-12 1994-02-22 Daikin Industries, Ltd. Apparatus for maintaining the activity of an enzyme electrode
US5431789A (en) * 1991-07-29 1995-07-11 Board Of Regents Of The University Of Wisconsin System Of Behalf Of The University Of Wisconsin-Milwaukee Determination of organic compounds in water

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Legal Events

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