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BR112012014270A2 - method for analyzing from a fluid to an analyte - Google Patents

method for analyzing from a fluid to an analyte

Info

Publication number
BR112012014270A2
BR112012014270A2 BR112012014270A BR112012014270A BR112012014270A2 BR 112012014270 A2 BR112012014270 A2 BR 112012014270A2 BR 112012014270 A BR112012014270 A BR 112012014270A BR 112012014270 A BR112012014270 A BR 112012014270A BR 112012014270 A2 BR112012014270 A2 BR 112012014270A2
Authority
BR
Brazil
Prior art keywords
analyte
potential
mediator
electrodes
sensor
Prior art date
Application number
BR112012014270A
Other languages
Portuguese (pt)
Inventor
Lawrence Nathan
Original Assignee
Prad Res & Dev 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 Prad Res & Dev Ltd filed Critical Prad Res & Dev Ltd
Publication of BR112012014270A2 publication Critical patent/BR112012014270A2/en

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, electrochemical, or magnetic means
    • G01N27/26Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
    • G01N27/416Systems
    • G01N27/4163Systems checking the operation of, or calibrating, the measuring apparatus
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/26Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
    • G01N27/28Electrolytic cell components
    • G01N27/30Electrodes, e.g. test electrodes; Half-cells
    • G01N27/308Electrodes, e.g. test electrodes; Half-cells at least partially made of carbon
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/26Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
    • G01N27/416Systems
    • G01N27/49Systems involving the determination of the current at a single specific value, or small range of values, of applied voltage for producing selective measurement of one or more particular ionic species
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/0004Gaseous mixtures, e.g. polluted air
    • G01N33/0009General constructional details of gas analysers, e.g. portable test equipment
    • G01N33/0027General constructional details of gas analysers, e.g. portable test equipment concerning the detector
    • G01N33/0036General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
    • G01N33/0044Sulphides, e.g. H2S

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Pathology (AREA)
  • Immunology (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Molecular Biology (AREA)
  • Electrochemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Medicinal Chemistry (AREA)
  • Food Science & Technology (AREA)
  • Combustion & Propulsion (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
  • Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)

Abstract

método para analisar de um fluido para um analito. esta invenção está envolvida com métodos eletroquímicos de analisar um fluido para um analito. ela utiliza um sensor compreendendo eletrodos e um composto mediador capaz de sofrer um ciclo de oxidação e redução em resposta a potencial variável aplicado aos eletrodos, onde o composto também é capaz de sofrer uma porção do ciclo por meio de reação química com o analito. como já é conhecido, o sensor é usado em um método no qual o sensor e o fluido são levados a contato suficientemente para o analito reagir quimicamente com o mediador e, em um procedimento de voltametria, potencial é aplicado aos eletrodos enquanto observando o fluxo de corrente com tempo suficiente para reação entre o composto mediador e o analito para, dessa forma, observar a concentração do analito. a característica nova desta invenção é uma etapa de calibrar o sensor aplicando um potencial rapidamente em mudança aos eletrodos e observando o fluxo de corrente, a mudança deste potencial e a observação de corrente sendo suficientemente rápida para permitir e observar oxidação e redução eletroquímica do mediador ocorrendo independentemente da concentração deanalito,dessa forma observando a concentração do composto mediador. a mudança rápida de potencial pode ser forneciida por voltametria de pulso ou voltametria de onda quadrada.method for analyzing a fluid for an analyte. This invention is involved with electrochemical methods of analyzing a fluid for an analyte. It utilizes a sensor comprising electrodes and a mediator compound capable of undergoing an oxidation and reduction cycle in response to the variable potential applied to the electrodes, where the compound is also capable of undergoing a portion of the cycle by chemical reaction with the analyte. As is already known, the sensor is used in a method in which the sensor and fluid are brought into sufficient contact for the analyte to react chemically with the mediator and, in a voltammetry procedure, potential is applied to the electrodes while observing the flow of sufficient time for reaction between the mediator compound and the analyte to thereby observe the concentration of the analyte. The novel feature of this invention is a step of calibrating the sensor by applying a rapidly changing potential to the electrodes and observing the current flow, the change in this potential and the current observation being fast enough to allow and observe electrochemical oxidation and reduction of the mediator occurring. regardless of the concentration of the analyte, thus observing the concentration of the mediator compound. Rapid change in potential may be provided by pulse voltammetry or square wave voltammetry.

BR112012014270A 2009-12-15 2010-10-25 method for analyzing from a fluid to an analyte BR112012014270A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0921849.6A GB2476237B (en) 2009-12-15 2009-12-15 Calibration of electrochemical sensor
PCT/IB2010/002747 WO2011073746A2 (en) 2009-12-15 2010-10-25 Calibration of electrochemical sensor

Publications (1)

Publication Number Publication Date
BR112012014270A2 true BR112012014270A2 (en) 2017-04-04

Family

ID=41667084

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112012014270A BR112012014270A2 (en) 2009-12-15 2010-10-25 method for analyzing from a fluid to an analyte

Country Status (4)

Country Link
BR (1) BR112012014270A2 (en)
CA (1) CA2783400A1 (en)
GB (1) GB2476237B (en)
WO (1) WO2011073746A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201108342D0 (en) 2011-05-18 2011-06-29 Element Six Ltd Electrochemical sensors
GB201108339D0 (en) * 2011-05-18 2011-06-29 Element Six Ltd Electrochemical sensors
US9435192B2 (en) 2013-11-06 2016-09-06 Schlumberger Technology Corporation Downhole electrochemical sensor and method of using same

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6413410B1 (en) * 1996-06-19 2002-07-02 Lifescan, Inc. Electrochemical cell
JP3655587B2 (en) * 1999-09-20 2005-06-02 ロシュ ダイアグノスティックス コーポレーション Small biosensor for continuous analyte monitoring
CA2293223C (en) * 1999-12-23 2004-02-10 Michael G. Paice Electrochemical method for determinating lignin content of pulp
AU2002327513B2 (en) * 2001-08-22 2007-07-26 Instrumentation Laboratory Company Method and apparatus for calibrating electrochemical sensors
GB2391314B (en) * 2002-07-25 2005-08-10 Schlumberger Holdings Methods and apparatus for the measurement of hydrogen sulphide and thiols in fluids
GB2397651B (en) * 2003-01-15 2005-08-24 Schlumberger Holdings Methods and apparatus for the measurement of hydrogen sulphide and thiols in fluids
US8105478B2 (en) * 2004-01-29 2012-01-31 Siemens Aktiengesellschaft Method for measuring the concentration or change in concentration of a redox-active substance and corresponding device
EP3483599A1 (en) * 2005-07-20 2019-05-15 Ascensia Diabetes Care Holdings AG Methods for measuring the concentration of an analyte in solution and for calibrating the measurement as well as handheld devices therefor
KR100974564B1 (en) * 2008-05-22 2010-08-06 한국원자력연구원 Reference electrode with automatic calibration function and electrochemical potential calibration device using the same

Also Published As

Publication number Publication date
WO2011073746A3 (en) 2011-10-13
GB2476237B (en) 2012-01-11
GB2476237A (en) 2011-06-22
WO2011073746A2 (en) 2011-06-23
CA2783400A1 (en) 2011-06-23
GB0921849D0 (en) 2010-01-27

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]
B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: EM VIRTUDE DO ARQUIVAMENTO PUBLICADO NA RPI 2485 DE 21-08-2018 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDO O ARQUIVAMENTO DO PEDIDO DE PATENTE, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013.