BR112012014270A2 - method for analyzing from a fluid to an analyte - Google Patents
method for analyzing from a fluid to an analyteInfo
- 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
Links
- 239000012491 analyte Substances 0.000 title abstract 8
- 239000012530 fluid Substances 0.000 title abstract 4
- 238000000034 method Methods 0.000 title abstract 4
- 150000001875 compounds Chemical class 0.000 abstract 4
- 238000006243 chemical reaction Methods 0.000 abstract 2
- 238000002848 electrochemical method Methods 0.000 abstract 1
- 238000006056 electrooxidation reaction Methods 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 abstract 1
- 238000007254 oxidation reaction Methods 0.000 abstract 1
- 238000000083 pulse voltammetry Methods 0.000 abstract 1
- 238000004365 square wave voltammetry Methods 0.000 abstract 1
- 238000004832 voltammetry Methods 0.000 abstract 1
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
- G01N27/416—Systems
- G01N27/4163—Systems checking the operation of, or calibrating, the measuring apparatus
-
- 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
- G01N27/308—Electrodes, e.g. test electrodes; Half-cells at least partially made of carbon
-
- 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
- G01N27/416—Systems
- G01N27/49—Systems 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
- G01N33/0044—Sulphides, 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.
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)
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)
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 |
-
2009
- 2009-12-15 GB GB0921849.6A patent/GB2476237B/en not_active Expired - Fee Related
-
2010
- 2010-10-25 CA CA2783400A patent/CA2783400A1/en not_active Abandoned
- 2010-10-25 BR BR112012014270A patent/BR112012014270A2/en not_active IP Right Cessation
- 2010-10-25 WO PCT/IB2010/002747 patent/WO2011073746A2/en active Application Filing
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 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Manea et al. | Simultaneous electrochemical determination of nitrate and nitrite in aqueous solution using Ag-doped zeolite-expanded graphite-epoxy electrode | |
Cobb et al. | Enhancing square wave voltammetry measurements via electrochemical analysis of the non-faradaic potential window | |
DK2302376T3 (en) | Electrochemical sensor to determine an analyte concentration | |
Ben-Yoav et al. | A whole cell electrochemical biosensor for water genotoxicity bio-detection | |
Kaisti et al. | Hand-held transistor based electrical and multiplexed chemical sensing system | |
ATE509274T1 (en) | BIOSENSOR DEVICE AND METHOD FOR USE THEREOF | |
ATE526333T1 (en) | REAGENTS FOR DETECTING HYPOCHLOROUS ACID | |
MX2014006118A (en) | Detecting analytes. | |
ATE534901T1 (en) | ELECTROCHEMICAL METHODS AND DEVICES FOR USE IN MEASURING ANALYTE CONCENTRATIONS WITH CORRECTED HEMATOCRIT | |
EA201690850A1 (en) | INTERNAL WELDING ELECTROCHEMICAL SENSOR AND METHOD OF ITS USE | |
Minteer | Advances in electroanalytical chemistry | |
MX2022012139A (en) | A method of measuring the ph of a sample. | |
Han et al. | Direct determination of creatinine based on poly (ethyleneimine)/phosphotungstic acid multilayer modified electrode | |
Rayanasukha et al. | Non-enzymatic urea sensor using molecularly imprinted polymers surface modified based-on ion-sensitive field effect transistor (ISFET) | |
Filik et al. | Simultaneous electrochemical preconcentration and determination of dopamine and uric acid by square-wave adsorptive stripping voltammetry using a poly (Safranine O)-modified glassy carbon electrode | |
BR112012014270A2 (en) | method for analyzing from a fluid to an analyte | |
WO2010076556A3 (en) | A conductivity measurement cell | |
ATE434056T1 (en) | METHOD FOR MARKING AND ANALYZING NUCLEIC ACIDS | |
EP4211259A4 (en) | ELECTROCHEMICAL BIOSENSOR FOR THE DETECTION OF TARGET ANALYTES | |
Martins et al. | Microfluidic-based bacterial molecular computing on a chip | |
WO2014140177A3 (en) | Methods of detecting high antioxidant levels during electrochemical measurements and failsafing an analyte concentration therefrom as well as devices, apparatuses and systems incorporting the same | |
WO2017007826A1 (en) | Systems for detecting and quantifying nucleic acids | |
HK1224016A1 (en) | Method for determining diffusion | |
Szőke et al. | Electrochemical determination of dopamine with graphene-modified glassy carbon electrodes | |
BR112017000627A2 (en) | electrochemical based analytical test strip with an enzyme reagent layer containing a naphthoquinone-based mediator and fad-gdh |
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. |