CN100507539C - Method for producing taste sense transducer containing electroconductive polymer - Google Patents
Method for producing taste sense transducer containing electroconductive polymer Download PDFInfo
- Publication number
- CN100507539C CN100507539C CNB2007100676762A CN200710067676A CN100507539C CN 100507539 C CN100507539 C CN 100507539C CN B2007100676762 A CNB2007100676762 A CN B2007100676762A CN 200710067676 A CN200710067676 A CN 200710067676A CN 100507539 C CN100507539 C CN 100507539C
- Authority
- CN
- China
- Prior art keywords
- electrode
- taste
- sensor
- conducting polymer
- gold
- 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 - Fee Related
Links
Images
Abstract
A method prepares taste sensor containing conducting polymer. Its steps are: Spoon-shaped metal-arc is prepared by vacuum sputtering and chemical deposition process on base plate. Take thiazuron single derivant as basic materials of taste sensitive layer adulterated with lauryl sodium sulfate, deposit taste sensitive layer on metal-arc by voltol method and dry it. Coat epoxide on area outsides taste sensitive layer and air dry to get taste sensor containing conducting polymer. Compared to existed techniques, its merits are: Taking thiazuron single derivant as materials of taste sensitive layer has batter sensitivity and stability under normal temperature. Adulterate high molecular weight salt can resolve invalidation problem of sensor caused by taste sensitive layer leaking. Taking voltol method to produce taste sensitive layer, sensor has good reusability. The sensor can test and identify five basic tastes of sour, sweet, bitter, salty and fresh.
Description
Technical field
The present invention relates to a kind of taste sensor, particularly a kind of preparation method who contains the taste sensor of conducting polymer.
Background technology
People's the sense of taste is to change film potential by physics, chemical reaction that taste bud cell on sense of taste material and the tongue is experienced film to cause, the sense of taste roughly can be divided into 5 kinds of primary tastes such as acid, sweet, bitter, salty, aquatic foods.In order to reproduce people's taste function, enlarge application places and scope, need carry out the sensor that Bionic Design realizes having " the artificial sense of taste ", i.e. taste sensor [1] to the sense of taste.Taste sensor is in the food and drink analysis, and heavy metal ion detects in the effluent sewage, and numerous areas such as the taste identification of medicine, analysis of components have a wide range of applications.Taste sensor can overcome traditional smell teacher's sense of taste fatigue problem or to experimenter's toxic and side effect, can improve traditional Biochemical Analyzer, chromatograph and spectrometer complex operation, waste time and energy, drawback such as instrument costliness, the real-time online of realizing industry fields such as food and drink, environmental protection, medicine is detected, analyzes and monitoring has great importance.
When taste sensor touched sense of taste solution to be detected, the quick layer of sensor flavor can absorb the material that is dissolved in the water, and the electrical property of sensor electrode is changed, and measures the different tastes that this change just can detect variable concentrations.Taste sensor has reproduced the mechanism and the reaction to sense of taste substance solution similar to people's taste perception mode of the membrane potential of the taste bud cell receptor that human body causes by sense of taste material, has good bionical effect and higher resolution.
At present, the researcher adopts lipid/polymeric membrane [2] or superpolymer [3] or chalcogenide glass (Chalcogenide glass) [4] or Prussian blue material preparation taste sensors such as [5] mostly.But above-mentioned these methods are when the preparation taste sensor, mostly there is the quick layer of flavor film forming complexity, wayward, the uniformity consistency of film is poor, the water wettability of film is poor, the quick layer of the flavor problems such as [6] that lost efficacy easily when being used for liquid phase environment and detecting for a long time, therefore the selectivity scope of prepared taste sensor is wide, reproducibility is relatively poor and stability is not very high.
In recent years and since conducting polymer have lower cost, preferably electric conductivity and photo-thermal, can be deposited on easily on the various substrates and can with other functional material copolymerization or advantage such as compound, thereby be subjected to sensor researcher's favor.Existing scholar adopts conducting polymer monomer doping low molecular weight salts FeCl
3Prepare taste sensor, but owing to adopt the low-molecular-weight salt dopping, the seepage quick layer conductivity that cause distinguishing the flavor of can take place when being used for liquid measure to descend and causes sensor failure [6,7], other has the researcher to adopt the conducting polymer polyaniline to prepare taste sensor, but the quick layer of flavor stable at normal temperatures not good enough [8] of this method preparation.
Summary of the invention
The object of the present invention is to provide a kind of preparation method who contains the taste sensor of conducting polymer, it chooses the thiophene monomer derivant as the quick layer of flavor basic material, doping macromolecule salt lauryl sodium sulfate salt adopts the electropolymerization method to grow on gold electrode and distinguishes the flavor of quick layer to prepare taste sensor.This contain the taste sensor of conducting polymer compare with taste sensor in the past have higher sensitivity, good stability and better repeatability.
A kind of preparation method who contains the taste sensor of conducting polymer is included in and makes spoon shape gold electrode 2 on the substrate 1, the quick layer 3 of preparation flavor on spoon shape gold electrode, and preparation gold solder dish 4 is characterized in that adopting following steps:
A) at Al
2O
3On the ceramic substrate 1, make the spoon shape gold electrode 2 that has 2 gold solder dishes 4 with vacuum sputtering or chemical vapour deposition technique, the electrode separation of spoon shape gold electrode is 100～300 μ m, and golden film thickness is 300nm～2 μ m, and electrode length is 15～40mm;
B) with conducting polymer thiophene monomer derivant 3,3 '-two amoxys-2,2 '-bithiophene 3,3 '-DPBTP renders in acetonitrile, chloroform, any solvent of benzene and dissolves, and adds the lauryl sodium sulfate brine solution again and forms mixed solution, in the mixed solution 3, the concentration of 3 '-DPBTP is 0.5～3M, the concentration of lauryl sodium sulfate salt is 0.1～1.5M, 3, and the mol ratio of 3 '-DPBTP and lauryl sodium sulfate salt is 1: 0.2～1: 0.5; Two gold solder dishes 4 are welded together, be dipped in the mixed solution as working electrode with spoon shape gold electrode 2, with Ag/AgCl as contrast electrode, the platinum electrode conduct is to electrode, at electric current is 2mA, current potential is under the 1V condition between working electrode and the contrast electrode, and be 5 minutes action time, and electropolymerization forms the quick layer 3 of flavor on working electrode; Take out working electrode, after the welding between two gold solder dishes is disconnected, be placed in the baking box and dry, heating-up temperature is 70 ℃, records to stop heating when its aerial stable DC resistance is 200～2K Ω;
C) the zone coating epoxy resin beyond the quick layer 3 of taste removal on substrate 1 dries, and obtains to contain the taste sensor of conducting polymer.
Thiophene monomer derivant 3,3 '-two amoxys-2,2 '-bithiophene 3,3 '-DPBTP adopt other thiophene monomer derivant 4,4 '-two amoxys-2,2 '-bithiophene 4, and 4 '-DPBTP or 3,4-vinyl-dioxy base thiophene EDOT replaces.
Above-mentioned Al
2O
3Substrates such as ceramic substrate useable glass, silicon chip replace, and spoon shape gold electrode adopts the interdigitated gold electrode to replace.
With prior art relatively, the present invention has following outstanding advantage: 1) with compliant conductive polymkeric substance thiophene phenol monomer derived thing as the quick layer of flavor basic material, have that solubility, satisfactory electrical conductivity, normal temperature are stable down preferably; 2) doping high molecular weight salt, the quick layer conductivity that can seepage in the time of can avoiding conducting polymer monomer doping low molecular weight salts in the past to be used for liquid detecting cause distinguishing the flavor of descends and causes the problem of sensor failure, has better stability, higher sensitivity; 3) adopt the quick layer of the legal growth conducting polymer flavor of voltolisation, simple to operate, but carry out under the room temperature, the thickness of film and area are easy to control, the sensor good reproducibility that makes, this can overcome the quick layer of taste sensor flavor preparation method complexity, wayward in the past, the shortcoming of the uniformity consistency difference of film; 4) this taste sensor volume is little, and measuring method and circuit are simple, helps realizing the microminiaturization, integrated of artificial sense of taste system; 5) manufacturing process is simple, and production cost is low.
Description of drawings
Fig. 1 is the structural representation that contains the taste sensor of conducting polymer of the present invention.
Embodiment
Embodiment 1:
A kind of preparation method who contains the taste sensor of conducting polymer is characterized in that adopting following steps:
A) at Al
2O
3On the ceramic substrate 1, make the spoon shape gold electrode 2 that has 2 gold solder dishes 4 with vacuum sputtering or chemical vapour deposition technique, the electrode separation of spoon shape gold electrode is 100 μ m, and golden film thickness is 2 μ m, and electrode length is 15mm;
B) with conducting polymer thiophene monomer derivant 3,3 '-two amoxys-2,2 '-bithiophene 3,3 '-DPBTP renders in the acetonitrile solvent and dissolves, and adds the lauryl sodium sulfate brine solution again and forms mixed solution, in the mixed solution 3, the concentration of 3 '-DPBTP is 3M, the concentration of lauryl sodium sulfate salt is 1.5M, 3, and the mol ratio of 3 '-DPBTP and lauryl sodium sulfate salt is 1: 0.5; Two gold solder dishes 4 are welded together, be dipped in the mixed solution as working electrode with spoon shape gold electrode 2, with Ag/AgCl as contrast electrode, the platinum electrode conduct is to electrode, at electric current is 2mA, current potential is under the 1V condition between working electrode and the contrast electrode, and be 5 minutes action time, and electropolymerization forms the quick layer 3 of flavor on working electrode; Take out working electrode, after the welding between two gold solder dishes is disconnected, be placed in the baking box and dry, heating-up temperature is 70 ℃, records to stop heating when its aerial stable DC resistance is 200 Ω;
C) the zone coating epoxy resin beyond the quick layer 3 of taste removal on substrate 1 dries, and obtains to contain the taste sensor of conducting polymer.
Embodiment 2:
A kind of preparation method who contains the taste sensor of conducting polymer is characterized in that adopting following steps:
A) at Al
2O
3On the ceramic substrate 1, make the spoon shape gold electrode 2 that has 2 gold solder dishes 4 with vacuum sputtering or chemical vapour deposition technique, the electrode separation of spoon shape gold electrode is 300 μ m, and golden film thickness is 300nm, and electrode length is 40mm;
B) with conducting polymer thiophene monomer derivant 4,4 '-two amoxys-2,2 '-bithiophene 4,4 '-DPBTP renders in the chloroform solvent and dissolves, and adds the lauryl sodium sulfate brine solution again and forms mixed solution, in the mixed solution 4, the concentration of 4 '-DPBTP is 0.5M, the concentration of lauryl sodium sulfate salt is 0.1M, 4, and the mol ratio of 4 '-DPBTP and lauryl sodium sulfate salt is 1: 0.2; Two gold solder dishes 4 are welded together, be dipped in the mixed solution as working electrode with spoon shape gold electrode 2, with Ag/AgCl as contrast electrode, the platinum electrode conduct is to electrode, at electric current is 2mA, current potential is under the 1V condition between working electrode and the contrast electrode, and be 5 minutes action time, and electropolymerization forms the quick layer 3 of flavor on working electrode; Take out working electrode, after the welding between two gold solder dishes is disconnected, be placed in the baking box and dry, heating-up temperature is 70 ℃, records to stop heating when its aerial stable DC resistance is 2K Ω;
C) the zone coating epoxy resin beyond the quick layer 3 of taste removal on substrate 1 dries, and obtains to contain the taste sensor of conducting polymer.
Embodiment 3:
A kind of preparation method who contains the taste sensor of conducting polymer is characterized in that adopting following steps:
A) at Al
2O
3On the ceramic substrate 1, make the spoon shape gold electrode 2 that has 2 gold solder dishes 4 with vacuum sputtering or chemical vapour deposition technique, the electrode separation of spoon shape gold electrode is 200 μ m, and golden film thickness is 1.2 μ m, and electrode length is 30mm;
B) with conducting polymer thiophene monomer derivant 3,4-vinyl-dioxy base thiophene EDOT renders in the benzene solvent and dissolves, add the lauryl sodium sulfate brine solution again and form mixed solution, the concentration of EDOT is 2M in the mixed solution, the concentration of lauryl sodium sulfate salt is 0.8M, and the mol ratio of EDOT and lauryl sodium sulfate salt is 1: 0.4; Two gold solder dishes 4 are welded together, be dipped in the mixed solution as working electrode with spoon shape gold electrode 2, with Ag/AgCl as contrast electrode, the platinum electrode conduct is to electrode, at electric current is 2mA, current potential is under the 1V condition between working electrode and the contrast electrode, and be 5 minutes action time, and electropolymerization forms the quick layer 3 of flavor on working electrode; Take out working electrode, after the welding between two gold solder dishes is disconnected, be placed in the baking box and dry, heating-up temperature is 70 ℃, records to stop heating when its aerial stable DC resistance is 1.2K Ω;
C) the zone coating epoxy resin beyond the quick layer 3 of taste removal on substrate 1 dries, and obtains to contain the taste sensor of conducting polymer.
List of references
[1].Toko?K.A?taste?sensor.Meas.Sci.Techn.，1998，9：1919-1936
[2].Patrik?lvarsson，Yukiko?Kikkawa，Fredrik?Winquist，et?al.，Comparison?of?avoltammetric?electronic?tongue?and?a?lipid?membrane?taste?sensor，Analytica?ChimicaActa，2001，449：59-68
[3].M.Ferreira，C.J.L.Constantino，A.Riul，H.C.Mattoso.Preparation，characterization?and?taste?sensing?properties?of?Langmuir-Blodgett?Filmsfrom?mixtures?of?polyaniline?and?a?ruthenium?complex.Polymer，2003，44：4205-4211
[4].Yu.G.Mourzina，J.Schubert，W.Zander，et?al.，Development?of?multi-sensorsystems?based?on?chalcogenide?thin?film?chemical?sensors?for?the?simultaneousmulticomponent?analysis?of?metal?ions?in?complex?solutions，Electrochimica?Acta，2001，47：251-258
[5].Parra?V，Hernando?T，et?al.Electrochimica?Acta，2004，49：5177-5185
[6].G.Serra，R.Stella，D.De?Rossi.Study?of?the?influence?of?oxidizing?salt?onconducting?polymer?sensor?properties，Material?Science?and?Engineering?C，1998，5：259-263
[7].A.Riul?Jr，A.M?Gallardo?Soto，S.V?Mello，et?al.，An?electronic?tongue?usingpolypyrrole?and?polyaniline，Synthetic?Metals，2003，132：109-116
[8].M.Ferreira，K.Wohnrath，R.M.Torresi，C.J.L.Constantino，R.F.Aroca.Langmuir，2002，18：540-546
Claims (3)
1. a preparation method who contains the taste sensor of conducting polymer is included in substrate (1) and goes up a making spoon shape gold electrode (2), and the preparation quick layer of flavor (3) on spoon shape gold electrode prepares gold solder dish (4), it is characterized in that adopting following steps:
A) at Al
2O
3On the ceramic substrate (1), make the spoon shape gold electrode (2) that has 2 gold solder dishes (4) with vacuum sputtering or chemical vapour deposition technique, the electrode separation of spoon shape gold electrode is 100～300 μ m, and golden film thickness is 300nm～2 μ m, and electrode length is 15～40mm;
B) with conducting polymer thiophene monomer derivant 3,3 '-two amoxys-2,2 '-bithiophene 3,3 '-DPBTP renders in acetonitrile, chloroform, any solvent of benzene and dissolves, and adds the lauryl sodium sulfate brine solution again and forms mixed solution, in the mixed solution 3, the concentration of 3 '-DPBTP is 0.5～3M, the concentration of lauryl sodium sulfate salt is 0.1～1.5M, 3, and the mol ratio of 3 '-DPBTP and lauryl sodium sulfate salt is 1: 0.2～1: 0.5; Two gold solder dishes (4) are welded together, be dipped in the mixed solution as working electrode with spoon shape gold electrode (2), with Ag/AgCl as contrast electrode, the platinum electrode conduct is to electrode, at electric current is 2mA, current potential is under the 1V condition between working electrode and the contrast electrode, and be 5 minutes action time, and electropolymerization forms the quick layer of flavor (3) on working electrode; Take out working electrode, after the welding between two gold solder dishes is disconnected, be placed in the baking box and dry, heating-up temperature is 70 ℃, records to stop heating when its aerial stable DC resistance is 200～2K Ω;
C) go up the quick layer of taste removal (3) zone coating epoxy resin in addition at substrate (1), dry, obtain to contain the taste sensor of conducting polymer.
2. method according to claim 1, it is characterized in that: thiophene monomer derivant 3,3 '-two amoxys-2,2 '-bithiophene 3,3 '-DPBTP adopts other thiophene monomer derivant 4,4 '-two amoxys-2,2 '-bithiophene 4,4 '-DPBTP or 3,4-vinyl-dioxy base thiophene EDOT replaces.
3. method according to claim 1 is characterized in that: spoon shape gold electrode adopts the interdigitated gold electrode to replace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100676762A CN100507539C (en) | 2007-03-29 | 2007-03-29 | Method for producing taste sense transducer containing electroconductive polymer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100676762A CN100507539C (en) | 2007-03-29 | 2007-03-29 | Method for producing taste sense transducer containing electroconductive polymer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101021500A CN101021500A (en) | 2007-08-22 |
| CN100507539C true CN100507539C (en) | 2009-07-01 |
Family
ID=38709335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100676762A Expired - Fee Related CN100507539C (en) | 2007-03-29 | 2007-03-29 | Method for producing taste sense transducer containing electroconductive polymer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100507539C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103233256B (en) * | 2013-04-07 | 2016-05-04 | 浙江清华长三角研究院 | A kind of PEDOT/bmim[PF6] preparation method of conductive ion liquid polymers air-sensitive film sensor |
| WO2017085796A1 (en) * | 2015-11-17 | 2017-05-26 | 株式会社アロマビット | Odor sensor and odor measurement system |
| CN106514669A (en) * | 2016-12-22 | 2017-03-22 | 苏州天为幕烟花科技有限公司 | Portable device for feeding patient or old person |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1439876A (en) * | 2002-02-19 | 2003-09-03 | 株式会社岛津制作所 | Smell measuring devices |
| CN1453584A (en) * | 2003-06-02 | 2003-11-05 | 江苏大学 | Fast non-destructive detection method and device of food smell based on gas sensor array technology |
| CN1491357A (en) * | 2000-12-22 | 2004-04-21 | 奥特雷公司 | Electronic tongue as ozone detector |
| CN1908644A (en) * | 2006-08-04 | 2007-02-07 | 南昌大学 | Method for detecting univalent metal cations with polypyrrole-PVC membrane decorative taste sensor |
-
2007
- 2007-03-29 CN CNB2007100676762A patent/CN100507539C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1491357A (en) * | 2000-12-22 | 2004-04-21 | 奥特雷公司 | Electronic tongue as ozone detector |
| CN1439876A (en) * | 2002-02-19 | 2003-09-03 | 株式会社岛津制作所 | Smell measuring devices |
| CN1453584A (en) * | 2003-06-02 | 2003-11-05 | 江苏大学 | Fast non-destructive detection method and device of food smell based on gas sensor array technology |
| CN1908644A (en) * | 2006-08-04 | 2007-02-07 | 南昌大学 | Method for detecting univalent metal cations with polypyrrole-PVC membrane decorative taste sensor |
Non-Patent Citations (11)
| Title |
|---|
| All-solid-state electronic tongueanditsapplicationforbeverageanalysis. Larisa Lvova等.Analytica Chimica Acta,Vol.468 No.2. 2002 |
| All-solid-state electronic tongueanditsapplicationforbeverageanalysis. Larisa Lvova等.Analytica Chimica Acta,Vol.468 No.2. 2002 * |
| An electronic tongue using polypyrrole and polyaniline. A. Riul Jr. 等.Synthetic Metals,Vol.132 No.2. 2003 |
| An electronic tongue using polypyrrole and polyaniline. A. Riul Jr. 等.Synthetic Metals,Vol.132 No.2. 2003 * |
| Multichannel Taste Sensor Using Lipid Membranes. K. HAYASHI等.Sensors and Actuators B,Vol.2 No.3. 1990 |
| Multichannel Taste Sensor Using Lipid Membranes. K. HAYASHI等.Sensors and Actuators B,Vol.2 No.3. 1990 * |
| Multicomponent analysis of Korean green teabymeansofdisposable all-solid-statepotentiometricelectronictonguemicrosystem. Larisa Lvova 等.Sensors and Actuators B,Vol.95 No.1-3. 2003 |
| Taste sensing with cellophane phosphate membrane. Sarmishtha Majumdar 等.Analytica Chimica Acta,Vol.554 No.1-2. 2005 |
| Taste sensing with polyacrylic acid graftedcellulosemembrane. Sarmishtha Majumdar 等.Talanta,Vol.69 No.1. 2006 |
| 人工智能味觉***：概念、结构与方法. 黄赣辉等.化学进展，第18卷第4期. 2006 |
| 基于凝胶与纳米碳管复合体化学传感器的研究及人工味觉应用. 郭希山等.传感技术学报，第4期. 2003 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101021500A (en) | 2007-08-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Martınez-Máñez et al. | An “electronic tongue” design for the qualitative analysis of natural waters | |
| Rius-Ruiz et al. | Potentiometric strip cell based on carbon nanotubes as transducer layer: Toward low-cost decentralized measurements | |
| Wu et al. | A novel molecularly imprinted impedimetric sensor for melamine determination | |
| Riul et al. | Artificial taste sensor: efficient combination of sensors made from Langmuir− Blodgett films of conducting polymers and a ruthenium complex and self-assembled films of an azobenzene-containing polymer | |
| Sheng et al. | Electrochemical detection combined with machine learning for intelligent sensing of maleic hydrazide by using carboxylated PEDOT modified with copper nanoparticles | |
| Abd El-Rahman et al. | Design of a stable solid-contact ion-selective electrode based on polyaniline nanoparticles as ion-to-electron transducer for application in process analytical technology as a real-time analyzer | |
| CN104597096B (en) | Fiber base organic electrochemistry transistor | |
| Guzinski et al. | Equilibration time of solid contact ion-selective electrodes | |
| Li et al. | A novel pH potentiometric sensor based on electrochemically synthesized polybisphenol A films at an ITO electrode | |
| Ciosek et al. | Miniaturized electronic tongue with an integrated reference microelectrode for the recognition of milk samples | |
| Huang et al. | Highly sensing and transducing materials for potentiometric ion sensors with versatile applicability | |
| Wang et al. | Electrochemical sensor using molecular imprinting polymerization modified electrodes to detect methyl parathion in environmental media | |
| Wang et al. | Langmuir–Blodgett film of p-tert-butylthiacalix [4] arene modified glassy carbon electrode as voltammetric sensor for the determination of Hg (II) | |
| Mortari et al. | Mesoporous gold electrodes for sensors based on electrochemical double layer capacitance | |
| CN100507539C (en) | Method for producing taste sense transducer containing electroconductive polymer | |
| Pięk et al. | High selective potentiometric sensor for determination of nanomolar con-centration of Cu (II) using a polymeric electrode modified by a graphene/7, 7, 8, 8-tetracyanoquinodimethane nanoparticles | |
| CN100507537C (en) | Method for producing taste sense transducer containing electroconductive polymer | |
| Kremers et al. | Microelectrode Combinations of Gold and Polypyrrole Enable Highly Stable Two‐electrode Electrochemical Impedance Spectroscopy Measurements under Turbulent Flow Conditions | |
| CA2815205C (en) | A method of measuring a capacitance and a use | |
| Radi et al. | Molecularly imprinted electrochemical sensor for the detection of organophosphorus pesticide profenofos | |
| CN108152344A (en) | Electrochemical detector | |
| Bhattacharya et al. | Equivalent circuit models and analysis of electrochemical impedance spectra of caffeine solutions and beverages | |
| Alarfaj et al. | Construction and validation of new electrochemical carbon nanotubes sensors for determination of acebutolol hydrochloride in pharmaceuticals and biological fluids | |
| WO2021021236A1 (en) | Breath analyzer and urea breath test method | |
| CN100507538C (en) | Method for producing taste sense transducer containing polymer-carbon black |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090701 Termination date: 20120329 |