CA2577229A1 - Electrochemical method - Google Patents

Electrochemical method Download PDF

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Publication number
CA2577229A1
CA2577229A1 CA002577229A CA2577229A CA2577229A1 CA 2577229 A1 CA2577229 A1 CA 2577229A1 CA 002577229 A CA002577229 A CA 002577229A CA 2577229 A CA2577229 A CA 2577229A CA 2577229 A1 CA2577229 A1 CA 2577229A1
Authority
CA
Canada
Prior art keywords
determining
current
working electrode
potential
estimating
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.)
Granted
Application number
CA002577229A
Other languages
French (fr)
Other versions
CA2577229C (en
Inventor
Alastair Mcindoe Hodges
Thomas William Beck
Oddvar Johansen
Ian Andrew Maxwell
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.)
LifeScan Inc
Original Assignee
Lifescan, Inc.
Alastair Mcindoe Hodges
Thomas William Beck
Oddvar Johansen
Ian Andrew Maxwell
Memtec America Corporation
Usf Filtration And Separations Group Inc.
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 Lifescan, Inc., Alastair Mcindoe Hodges, Thomas William Beck, Oddvar Johansen, Ian Andrew Maxwell, Memtec America Corporation, Usf Filtration And Separations Group Inc. filed Critical Lifescan, Inc.
Publication of CA2577229A1 publication Critical patent/CA2577229A1/en
Application granted granted Critical
Publication of CA2577229C publication Critical patent/CA2577229C/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
    • C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
    • C12Q1/001—Enzyme electrodes
    • C12Q1/005—Enzyme electrodes involving specific analytes or enzymes
    • C12Q1/006—Enzyme electrodes involving specific analytes or enzymes for glucose
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
    • C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
    • C12Q1/001—Enzyme electrodes
    • C12Q1/004—Enzyme electrodes mediator-assisted
    • 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
    • G01N27/327—Biochemical electrodes, e.g. electrical or mechanical details for in vitro measurements
    • G01N27/3271—Amperometric enzyme electrodes for analytes in body fluids, e.g. glucose in blood
    • G01N27/3272—Test elements therefor, i.e. disposable laminated substrates with electrodes, reagent and channels

Abstract

A method for determining the concentration of a reduced or oxidized form of a redox species in an electrochemical cell (Fig 10) of the kind comprising a working electrode (2) and a counter electrode (16) spaced from the working electrode such that reaction products from the counter electrode arrive at the working electrode, the method comprising the steps (Fig 5) of applying (21) an electric potential between the electrodes, such that the electro-oxidation of the redox species is diffusion controlled, determining the current as a function of time, estimating the magnitude of the steady state current (23), reversing the potential, again determining current as a function of time and estimating the reverse potential steady state (25).
CA002577229A 1995-11-16 1996-11-15 Electrochemical method Expired - Lifetime CA2577229C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AUPN6619A AUPN661995A0 (en) 1995-11-16 1995-11-16 Electrochemical cell 2
AUPN6619 1995-11-16
CA002236848A CA2236848C (en) 1995-11-16 1996-11-15 Electrochemical method

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA002236848A Division CA2236848C (en) 1995-11-16 1996-11-15 Electrochemical method

Publications (2)

Publication Number Publication Date
CA2577229A1 true CA2577229A1 (en) 1997-05-22
CA2577229C CA2577229C (en) 2008-01-08

Family

ID=3790943

Family Applications (3)

Application Number Title Priority Date Filing Date
CA002236848A Expired - Lifetime CA2236848C (en) 1995-11-16 1996-11-15 Electrochemical method
CA002577229A Expired - Lifetime CA2577229C (en) 1995-11-16 1996-11-15 Electrochemical method
CA002236850A Expired - Lifetime CA2236850C (en) 1995-11-16 1996-11-15 Electrochemical cell

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CA002236848A Expired - Lifetime CA2236848C (en) 1995-11-16 1996-11-15 Electrochemical method

Family Applications After (1)

Application Number Title Priority Date Filing Date
CA002236850A Expired - Lifetime CA2236850C (en) 1995-11-16 1996-11-15 Electrochemical cell

Country Status (16)

Country Link
US (3) US6179979B1 (en)
EP (5) EP0882226B1 (en)
JP (2) JP2000500572A (en)
KR (5) KR100655357B1 (en)
CN (8) CN1932500B (en)
AT (4) ATE242477T1 (en)
AU (3) AUPN661995A0 (en)
BR (2) BR9611513B1 (en)
CA (3) CA2236848C (en)
DE (3) DE69628948T2 (en)
DK (4) DK0967480T3 (en)
ES (4) ES2195019T3 (en)
HK (6) HK1018096A1 (en)
IL (5) IL124495A (en)
RU (4) RU2202781C2 (en)
WO (2) WO1997018464A1 (en)

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