WO2003087799A1 - Procede et appareil de mesure par amperometrie du taux d'absorption d'iode d'une substance - Google Patents
Procede et appareil de mesure par amperometrie du taux d'absorption d'iode d'une substance Download PDFInfo
- Publication number
- WO2003087799A1 WO2003087799A1 PCT/FR2003/001069 FR0301069W WO03087799A1 WO 2003087799 A1 WO2003087799 A1 WO 2003087799A1 FR 0301069 W FR0301069 W FR 0301069W WO 03087799 A1 WO03087799 A1 WO 03087799A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- iodine
- substance
- solution
- electrodes
- electrolysis current
- Prior art date
Links
Classifications
-
- 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
- G01N33/02—Food
- G01N33/10—Starch-containing substances, e.g. dough
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/16—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using titration
- G01N31/162—Determining the equivalent point by means of a discontinuity
- G01N31/164—Determining the equivalent point by means of a discontinuity by electrical or electrochemical means
Definitions
- the invention relates to a method and an apparatus for amperometric measurement of the iodine absorption rate of a substance.
- the starch absorbs iodine while the concentration of iodine in a solution can be evaluated by measuring an electrolysis current, the quantity of iodine absorbed being inversely proportional to the intensity of said current. electrolysis.
- the known devices for such a measurement include a container in which the electrolysis current between two electrodes of a mixture of flour and an iodine solution is measured.
- the invention proposes a method and an apparatus which are original for measuring by amperometry the rate of absorption of iodine of a substance and in particular of a flour to determine its level of damaged starch.
- the method according to the invention is notably remarkable in that it consists in preparing a solution capable of supplying iodine by electrochemical reaction, in generating iodine by electrochemical reaction, in measuring an electrolysis current of the solution , introduce the substance to be analyzed into the solution, measure an electrolysis current of the mixture and determine the rate of iodine absorption by the substance as a function of the measured currents which are themselves a function of the concentration of iodine.
- the method according to the invention recommends, contrary to known art and what could have been imagined, to introduce, or here to generate iodine before introducing the substance rather than introducing iodine into a suspension already containing the substance.
- the method according to the invention which therefore notably consists in introducing the substance after the generation of iodine offers, in addition to the advantages linked to the electrochemical manufacture of iodine, the advantage of easier internal calibration.
- the solution comprises distilled water, iodide and a weak acid and in particular boric acid.
- the solution also comprises a small amount of thiosulfate to neutralize the iodine which may have become attached to the electrodes for measuring and / or generating the iodine.
- the solution is previously heated and mixed by stirring before the introduction of the substance to be measured, the heating and stirring being maintained throughout the duration of the measurement cycle.
- the solution is heated to a temperature of about 30 to 40 degrees, the possible first measurement of the current of the solution is carried out for a few seconds, the generation of iodine is carried out for a time proportional to the mass of the substance to be introduced on the basis of approximately one hundred seconds for one gram of substance, the measurement of the electrolysis current of the solution is carried out after obtaining a concentration plateau obtained after a few tens of seconds, the introduction of the substance is carried out gradually for a few seconds and the measurement of the residual electrolysis current of the mixture is carried out after several tens of seconds from the end of the introduction of the substance.
- the method according to the invention makes it possible to measure the rate of iodine absorption of a substance, it is more particularly recommended to make such a measurement with wheat flour in order to measure its level of damaged starch which is a function of the rate of absorption of iodine.
- the invention also relates to an apparatus for amperometric measurement of the iodine absorption rate of a substance comprising a container intended to receive a suspension of the substance to be measured and an agitator, an apparatus which is particularly remarkable in that it further comprises at least one pair of electrodes for measuring the electrolysis current and at least one pair of electrodes for generating iodine.
- the apparatus also includes a feed vibrator for dispersing the substance in a solution previously introduced into the container.
- the pair of electrodes for measuring the electrolysis current and the pair of iodine generation electrodes are in the form of pairs of rings arranged on the same conductivity probe. and preferably in this case, a temperature sensor is also fitted on the conductivity probe.
- the apparatus comprises a heating means in the form of a heating resistance immersed in the container.
- the apparatus comprises a fixed part forming a base arranged to receive the container and a movable part mounted in a pivoting manner and which comprises the agitator, the pairs of electrodes, the temperature sensor and any resistance electric, these elements being arranged on said movable part in order to be able to come into the container or to come out of it during the pivoting which brings angularly closer or respectively deviates said respectively mobile and fixed parts.
- FIG. 1 shows a front view of an apparatus according to the invention
- FIG. 2 is a side view of the apparatus of FIG. 1,
- FIG. 3 shows an advantageous embodiment of electrodes for an apparatus according to the invention.
- an apparatus comprising two parts, respectively a fixed part forming a V base and a mobile part forming a 1 "measuring head pivotally mounted on said base V, being able to rotate around a axis 2.
- the base 1 ' is designed to receive a container 3 and the measuring head 1 "comprises in particular, as shown more particularly in FIG. 1, an agitator 4, a conductivity probe 5 and a heating resistor 6, which is said plunging as will be explained below.
- the measuring head 1 "comprises a guide 7 equipped with a vibrator 8 intended to receive an instrument for loading the substance in the form of a small shovel shown diagrammatically at 9 in FIG. 2.
- the elements 4, 5 and 6 mentioned above are grouped and positioned so as to be able to come and plunge into the container 3 as shown in FIGS. 1 and 2, when the head 1 "is brought closer by pivoting of the base 1 ', position in which said elements are substantially vertical.
- the conductivity probe 5 comprises two pairs of electrodes 10 and 11 respectively and a temperature regulating sensor 12.
- the pairs of electrodes 10 and 11 are in the form of pairs of rings, the pair of electrodes 10 being intended to generate iodine and the pair of electrodes 11 to be measured. iodine consumed as will be explained below.
- a solution is prepared in the container 3 based on distilled water, iodide and a weak acid such as boric acid.
- thiosulfate is added thereto to neutralize the iodine which may have become attached to the measurement electrodes and / or the iodine generation electrodes.
- iodine which may have become attached to the measurement electrodes and / or the iodine generation electrodes.
- thiosulfate is added thereto to neutralize the iodine which may have become attached to the measurement electrodes and / or the iodine generation electrodes.
- iodide 3 grams of boric acid and a drop of thiosulfate are introduced.
- the solution is then mixed by stirring by means of the stirrer 4 and it is heated using the heating resistor 6.
- the solution is thus heated to a temperature of about 35 degrees, which is controlled by the temperature regulating sensor 12 fitted on the probe 5.
- the controlled heating and mixing by stirring are maintained throughout the duration of the cycle.
- the pair of measurement electrodes 11 makes it possible to make a first current measurement, for example for ten seconds in order to determine if need be. current of zero, this being generally zero due to the presence of the thiosulfate which neutralizes the iodine possibly attached to the electrodes.
- iodine is generated by electrochemical reaction by means of the pair of electrodes 10 for a time proportional to the mass of the substance to be measured on the basis for example of one hundred seconds for a mass of one gram, therefore a iodine generation time in seconds equal to a hundred times the mass of substance.
- the electrolysis current is measured, which gives a value denoted “Im”.
- the substance to be measured is introduced, for example wheat flour for which the level of damaged starch is to be known.
- the amount of flour is predetermined, as already said, by the time of generation of iodine (or vice versa), for example one gram.
- the shovel 9 is used which contains the substance and which is introduced into the guide 7, the said substance then being poured out and gradually dispersed in the container 3 by means of the vibrator 8 which shakes the shovel 9, for example during a few seconds with stronger vibrations towards the end.
- the residual electrolysis current ie “Ir”, is measured after several tens of seconds.
- This measurement of the ratio makes it possible in particular to obtain a self-calibration knowing that the current can vary as a function of the position of the electrodes and the agitation in the solution.
- the weighing of the substance which is going to be introduced can be precise while it is difficult to introduce a precise precise quantity. Consequently, it is possible, for example, to correct the current Im as a function of the real mass of flour in order to reduce its value to that which corresponds to one gram.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- General Physics & Mathematics (AREA)
- Pathology (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Food Science & Technology (AREA)
- Immunology (AREA)
- Medicinal Chemistry (AREA)
- Molecular Biology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2003249141A AU2003249141A1 (en) | 2002-04-12 | 2003-04-04 | Method and device for amperometric measurement of the iodine absorption rate of a substance |
EP03746319A EP1495314A1 (fr) | 2002-04-12 | 2003-04-04 | Procede et appareil de mesure par amperometrie du taux d abs orption d iode d une substance |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0204587A FR2838518B1 (fr) | 2002-04-12 | 2002-04-12 | Procede et appareil de mesure par amperometrie du taux d'absorption d'iode d'une substance |
FR02/04587 | 2002-04-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003087799A1 true WO2003087799A1 (fr) | 2003-10-23 |
Family
ID=28459778
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2003/001069 WO2003087799A1 (fr) | 2002-04-12 | 2003-04-04 | Procede et appareil de mesure par amperometrie du taux d'absorption d'iode d'une substance |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1495314A1 (fr) |
AU (1) | AU2003249141A1 (fr) |
FR (1) | FR2838518B1 (fr) |
WO (1) | WO2003087799A1 (fr) |
Cited By (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8227254B2 (en) | 2005-01-31 | 2012-07-24 | Cambridge Enterprise Limited | Sensor molecules incorporating a boronic acid sensor group |
US9313458B2 (en) | 2006-10-20 | 2016-04-12 | Time Warner Cable Enterprises Llc | Downloadable security and protection methods and apparatus |
US9565472B2 (en) | 2012-12-10 | 2017-02-07 | Time Warner Cable Enterprises Llc | Apparatus and methods for content transfer protection |
US9602864B2 (en) | 2009-06-08 | 2017-03-21 | Time Warner Cable Enterprises Llc | Media bridge apparatus and methods |
US9674224B2 (en) | 2007-01-24 | 2017-06-06 | Time Warner Cable Enterprises Llc | Apparatus and methods for provisioning in a download-enabled system |
US9742768B2 (en) | 2006-11-01 | 2017-08-22 | Time Warner Cable Enterprises Llc | Methods and apparatus for premises content distribution |
US9918345B2 (en) | 2016-01-20 | 2018-03-13 | Time Warner Cable Enterprises Llc | Apparatus and method for wireless network services in moving vehicles |
US9935833B2 (en) | 2014-11-05 | 2018-04-03 | Time Warner Cable Enterprises Llc | Methods and apparatus for determining an optimized wireless interface installation configuration |
US9973798B2 (en) | 2004-07-20 | 2018-05-15 | Time Warner Cable Enterprises Llc | Technique for securely communicating programming content |
US9986578B2 (en) | 2015-12-04 | 2018-05-29 | Time Warner Cable Enterprises Llc | Apparatus and methods for selective data network access |
US10164858B2 (en) | 2016-06-15 | 2018-12-25 | Time Warner Cable Enterprises Llc | Apparatus and methods for monitoring and diagnosing a wireless network |
US10178072B2 (en) | 2004-07-20 | 2019-01-08 | Time Warner Cable Enterprises Llc | Technique for securely communicating and storing programming material in a trusted domain |
US10368255B2 (en) | 2017-07-25 | 2019-07-30 | Time Warner Cable Enterprises Llc | Methods and apparatus for client-based dynamic control of connections to co-existing radio access networks |
US10492034B2 (en) | 2016-03-07 | 2019-11-26 | Time Warner Cable Enterprises Llc | Apparatus and methods for dynamic open-access networks |
US10560772B2 (en) | 2013-07-23 | 2020-02-11 | Time Warner Cable Enterprises Llc | Apparatus and methods for selective data network access |
US10638361B2 (en) | 2017-06-06 | 2020-04-28 | Charter Communications Operating, Llc | Methods and apparatus for dynamic control of connections to co-existing radio access networks |
US10645547B2 (en) | 2017-06-02 | 2020-05-05 | Charter Communications Operating, Llc | Apparatus and methods for providing wireless service in a venue |
US10965727B2 (en) | 2009-06-08 | 2021-03-30 | Time Warner Cable Enterprises Llc | Methods and apparatus for premises content distribution |
US11076203B2 (en) | 2013-03-12 | 2021-07-27 | Time Warner Cable Enterprises Llc | Methods and apparatus for providing and uploading content to personalized network storage |
US11197050B2 (en) | 2013-03-15 | 2021-12-07 | Charter Communications Operating, Llc | Methods and apparatus for client-based dynamic control of connections to co-existing radio access networks |
US11540148B2 (en) | 2014-06-11 | 2022-12-27 | Time Warner Cable Enterprises Llc | Methods and apparatus for access point location |
US11792462B2 (en) | 2014-05-29 | 2023-10-17 | Time Warner Cable Enterprises Llc | Apparatus and methods for recording, accessing, and delivering packetized content |
US11831955B2 (en) | 2010-07-12 | 2023-11-28 | Time Warner Cable Enterprises Llc | Apparatus and methods for content management and account linking across multiple content delivery networks |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104155352B (zh) * | 2014-07-18 | 2016-08-17 | 电子科技大学 | 多功能夹持式电化学实验装置 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4172015A (en) * | 1977-02-28 | 1979-10-23 | Imperial Chemical Industries Limited | Electrochemical device and analytical method |
GB1558066A (en) * | 1976-02-27 | 1979-12-19 | Ici Ltd | Method of analysis and apparatus therefor |
US5098848A (en) * | 1989-09-19 | 1992-03-24 | Forschungszentrum Julich Gmbh | Method and apparatus for measuring the air content of water-soluble oxidizers |
RU2105296C1 (ru) * | 1996-07-24 | 1998-02-20 | Всероссийский научно-исследовательский институт минерального сырья им.Н.М.Федоровского | Способ определения нитрит-иона в растворе |
-
2002
- 2002-04-12 FR FR0204587A patent/FR2838518B1/fr not_active Expired - Lifetime
-
2003
- 2003-04-04 WO PCT/FR2003/001069 patent/WO2003087799A1/fr not_active Application Discontinuation
- 2003-04-04 AU AU2003249141A patent/AU2003249141A1/en not_active Abandoned
- 2003-04-04 EP EP03746319A patent/EP1495314A1/fr not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1558066A (en) * | 1976-02-27 | 1979-12-19 | Ici Ltd | Method of analysis and apparatus therefor |
US4172015A (en) * | 1977-02-28 | 1979-10-23 | Imperial Chemical Industries Limited | Electrochemical device and analytical method |
US5098848A (en) * | 1989-09-19 | 1992-03-24 | Forschungszentrum Julich Gmbh | Method and apparatus for measuring the air content of water-soluble oxidizers |
RU2105296C1 (ru) * | 1996-07-24 | 1998-02-20 | Всероссийский научно-исследовательский институт минерального сырья им.Н.М.Федоровского | Способ определения нитрит-иона в растворе |
Non-Patent Citations (1)
Title |
---|
DATABASE WPI Section Ch Week 199840, Derwent World Patents Index; Class D15, AN 1998-465831, XP002226882 * |
Cited By (41)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10178072B2 (en) | 2004-07-20 | 2019-01-08 | Time Warner Cable Enterprises Llc | Technique for securely communicating and storing programming material in a trusted domain |
US10848806B2 (en) | 2004-07-20 | 2020-11-24 | Time Warner Cable Enterprises Llc | Technique for securely communicating programming content |
US11088999B2 (en) | 2004-07-20 | 2021-08-10 | Time Warner Cable Enterprises Llc | Technique for securely communicating and storing programming material in a trusted domain |
US9973798B2 (en) | 2004-07-20 | 2018-05-15 | Time Warner Cable Enterprises Llc | Technique for securely communicating programming content |
US8227254B2 (en) | 2005-01-31 | 2012-07-24 | Cambridge Enterprise Limited | Sensor molecules incorporating a boronic acid sensor group |
US11381549B2 (en) | 2006-10-20 | 2022-07-05 | Time Warner Cable Enterprises Llc | Downloadable security and protection methods and apparatus |
US9313458B2 (en) | 2006-10-20 | 2016-04-12 | Time Warner Cable Enterprises Llc | Downloadable security and protection methods and apparatus |
US9923883B2 (en) | 2006-10-20 | 2018-03-20 | Time Warner Cable Enterprises Llc | Downloadable security and protection methods and apparatus |
US10362018B2 (en) | 2006-10-20 | 2019-07-23 | Time Warner Cable Enterprises Llc | Downloadable security and protection methods and apparatus |
US10069836B2 (en) | 2006-11-01 | 2018-09-04 | Time Warner Cable Enterprises Llc | Methods and apparatus for premises content distribution |
US9742768B2 (en) | 2006-11-01 | 2017-08-22 | Time Warner Cable Enterprises Llc | Methods and apparatus for premises content distribution |
US10404752B2 (en) | 2007-01-24 | 2019-09-03 | Time Warner Cable Enterprises Llc | Apparatus and methods for provisioning in a download-enabled system |
US11552999B2 (en) | 2007-01-24 | 2023-01-10 | Time Warner Cable Enterprises Llc | Apparatus and methods for provisioning in a download-enabled system |
US9674224B2 (en) | 2007-01-24 | 2017-06-06 | Time Warner Cable Enterprises Llc | Apparatus and methods for provisioning in a download-enabled system |
US9749677B2 (en) | 2009-06-08 | 2017-08-29 | Time Warner Cable Enterprises Llc | Media bridge apparatus and methods |
US9602864B2 (en) | 2009-06-08 | 2017-03-21 | Time Warner Cable Enterprises Llc | Media bridge apparatus and methods |
US10965727B2 (en) | 2009-06-08 | 2021-03-30 | Time Warner Cable Enterprises Llc | Methods and apparatus for premises content distribution |
US10652607B2 (en) | 2009-06-08 | 2020-05-12 | Time Warner Cable Enterprises Llc | Media bridge apparatus and methods |
US11831955B2 (en) | 2010-07-12 | 2023-11-28 | Time Warner Cable Enterprises Llc | Apparatus and methods for content management and account linking across multiple content delivery networks |
US10050945B2 (en) | 2012-12-10 | 2018-08-14 | Time Warner Cable Enterprises Llc | Apparatus and methods for content transfer protection |
US9565472B2 (en) | 2012-12-10 | 2017-02-07 | Time Warner Cable Enterprises Llc | Apparatus and methods for content transfer protection |
US10958629B2 (en) | 2012-12-10 | 2021-03-23 | Time Warner Cable Enterprises Llc | Apparatus and methods for content transfer protection |
US11076203B2 (en) | 2013-03-12 | 2021-07-27 | Time Warner Cable Enterprises Llc | Methods and apparatus for providing and uploading content to personalized network storage |
US11197050B2 (en) | 2013-03-15 | 2021-12-07 | Charter Communications Operating, Llc | Methods and apparatus for client-based dynamic control of connections to co-existing radio access networks |
US10560772B2 (en) | 2013-07-23 | 2020-02-11 | Time Warner Cable Enterprises Llc | Apparatus and methods for selective data network access |
US11792462B2 (en) | 2014-05-29 | 2023-10-17 | Time Warner Cable Enterprises Llc | Apparatus and methods for recording, accessing, and delivering packetized content |
US11540148B2 (en) | 2014-06-11 | 2022-12-27 | Time Warner Cable Enterprises Llc | Methods and apparatus for access point location |
US9935833B2 (en) | 2014-11-05 | 2018-04-03 | Time Warner Cable Enterprises Llc | Methods and apparatus for determining an optimized wireless interface installation configuration |
US9986578B2 (en) | 2015-12-04 | 2018-05-29 | Time Warner Cable Enterprises Llc | Apparatus and methods for selective data network access |
US11412320B2 (en) | 2015-12-04 | 2022-08-09 | Time Warner Cable Enterprises Llc | Apparatus and methods for selective data network access |
US9918345B2 (en) | 2016-01-20 | 2018-03-13 | Time Warner Cable Enterprises Llc | Apparatus and method for wireless network services in moving vehicles |
US10687371B2 (en) | 2016-01-20 | 2020-06-16 | Time Warner Cable Enterprises Llc | Apparatus and method for wireless network services in moving vehicles |
US10492034B2 (en) | 2016-03-07 | 2019-11-26 | Time Warner Cable Enterprises Llc | Apparatus and methods for dynamic open-access networks |
US11665509B2 (en) | 2016-03-07 | 2023-05-30 | Time Warner Cable Enterprises Llc | Apparatus and methods for dynamic open-access networks |
US11146470B2 (en) | 2016-06-15 | 2021-10-12 | Time Warner Cable Enterprises Llc | Apparatus and methods for monitoring and diagnosing a wireless network |
US10164858B2 (en) | 2016-06-15 | 2018-12-25 | Time Warner Cable Enterprises Llc | Apparatus and methods for monitoring and diagnosing a wireless network |
US11356819B2 (en) | 2017-06-02 | 2022-06-07 | Charter Communications Operating, Llc | Apparatus and methods for providing wireless service in a venue |
US10645547B2 (en) | 2017-06-02 | 2020-05-05 | Charter Communications Operating, Llc | Apparatus and methods for providing wireless service in a venue |
US11350310B2 (en) | 2017-06-06 | 2022-05-31 | Charter Communications Operating, Llc | Methods and apparatus for dynamic control of connections to co-existing radio access networks |
US10638361B2 (en) | 2017-06-06 | 2020-04-28 | Charter Communications Operating, Llc | Methods and apparatus for dynamic control of connections to co-existing radio access networks |
US10368255B2 (en) | 2017-07-25 | 2019-07-30 | Time Warner Cable Enterprises Llc | Methods and apparatus for client-based dynamic control of connections to co-existing radio access networks |
Also Published As
Publication number | Publication date |
---|---|
AU2003249141A1 (en) | 2003-10-27 |
FR2838518B1 (fr) | 2004-10-01 |
EP1495314A1 (fr) | 2005-01-12 |
FR2838518A1 (fr) | 2003-10-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2003087799A1 (fr) | Procede et appareil de mesure par amperometrie du taux d'absorption d'iode d'une substance | |
Ensafi et al. | A voltammetric sensor based on modified multiwall carbon nanotubes for cysteamine determination in the presence of tryptophan using p‐aminophenol as a mediator | |
EP2737308B1 (fr) | Dispositif pour la mesure de la teneur en chlore libre d'une eau | |
EP0467759B1 (fr) | Dispositif de détection du changement de viscosité d'un électrolythe liquide par effet de dépolarisation | |
Ensafi et al. | New modified-multiwall carbon nanotubes paste electrode for electrocatalytic oxidation and determination of hydrazine using square wave voltammetry | |
JP2009503452A5 (fr) | ||
FR2514510A1 (fr) | Appareil pour faire tourner des recipients de reaction dans une attitude inclinee | |
Ghoreishi et al. | Central composite rotatable design in the development of a new method for optimization, voltammetric determination and electrochemical behavior of betaxolol in the presence of acetaminophen based on a gold nanoparticle modified electrode | |
Maccà et al. | Experimental procedures for the determination of amperometric selectivity coefficients | |
FR2728347A1 (fr) | Dispositif utilisable dans l'analyse voltmetrique de dissociation de traces de metaux | |
EP1162453A1 (fr) | Capteur électrochimique à reproductibilité accrue | |
Rajabzadeh et al. | A highly sensitive sensor based on reduced graphene oxide, carbon nanotube and a Co (II) complex modified carbon paste electrode: simultaneous determination of isoprenaline, captopril and tryptophan | |
Tesařová et al. | Potentiometric stripping analysis at antimony film electrodes | |
Švancara et al. | Perspectives of carbon paste electrodes in stripping potentiometry | |
FR2526950A1 (fr) | Systeme d'electrodes pour mesures voltametriques | |
JP6827951B2 (ja) | 濃度測定方法 | |
Adeloju et al. | Anodic stripping potentiometric determination of antimony on a combined electrode | |
Mirzanasiri et al. | Electrochemiluminescence analysis of levodopa using luminol at MWCNT-modified electrode | |
JP2005043246A (ja) | フッ素樹脂中の重金属の定量方法 | |
FR2629205A1 (fr) | Dispositif et procede pour la mesure de la concentration de l'hydrogene dans l'eau | |
FR2494862A1 (fr) | Appareil et procede de compensation continue automatique des pertes par evaporation | |
KR101229404B1 (ko) | 유해 물질 검출 센서 칩 | |
JP2001272369A (ja) | 微小電極を用いた測定方法、測定装置及び電極体 | |
FR2589240A1 (fr) | Barrette d'analyse monoparametre | |
WO2006108759A1 (fr) | Procede d'analyse electrochimique par voltametrie et dispositif pour sa mise en oeuvre |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ OM PH PL PT RO RU SC SD SE SG SK SL TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2003746319 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 2003746319 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: JP |
|
WWW | Wipo information: withdrawn in national office |
Country of ref document: JP |