CN110873742A - Electrode structure of purine sensor - Google Patents
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- CN110873742A CN110873742A CN201811015735.6A CN201811015735A CN110873742A CN 110873742 A CN110873742 A CN 110873742A CN 201811015735 A CN201811015735 A CN 201811015735A CN 110873742 A CN110873742 A CN 110873742A
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Abstract
The invention discloses an electrode structure of a purine sensor. The electrode structure includes: a cylindrical case defining an electrode receiving space therein; the reference electrode and the counter electrode are arranged in the electrode accommodating space and form a cylindrical structure; the working electrode is arranged in a cylindrical structure formed by the reference electrode and the counter electrode in a surrounding manner; the working electrode, the reference electrode and the counter electrode are separated by insulating materials, one ends of the working electrode, the reference electrode and the counter electrode extend out of the cylindrical shell to serve as sensing ends, and the sensing ends of the working electrode are provided with sensitive membranes suitable for catalyzing purine substances to perform chemical reactions. The electrode has simple structural design and small volume, and is convenient to be implanted into a household appliance to detect purine substances in food.
Description
Technical Field
The invention relates to the field of household appliances, in particular to an electrode structure of a purine sensor.
Background
Gout is produced by long-term metabolic disorder of purine substances in human bodies. It is clinically characterized by hyperuricemia, repeated attack of acute arthritis, tophus formation, joint deformity, renal parenchymal lesion, etc. In recent years, the global incidence of disease has been on the rise. The current methods for detecting purines include: high performance liquid chromatography, ion exchange chromatography, electrophoresis, chromatography, differential pulse voltammetry, gas chromatography, and the like. However, the existing detection methods are complicated to operate, time-consuming and require periodic replacement of consumables. In addition, part of methods (such as high performance liquid chromatography and the like) need to be equipped with large-scale detection equipment, have poor implantation performance and cannot be embedded into a product platform.
Therefore, the existing means for detecting purine substances still need to be improved.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. To this end, it is an object of the present invention to propose an electrode structure of a purine sensor. The electrode has simple structural design and small volume, and is convenient to be implanted into a household appliance to detect purine substances in food.
In one aspect of the invention, an electrode structure for a purine sensor is presented. According to an embodiment of the invention, the electrode structure comprises:
a cylindrical case defining therein an electrode accommodating space;
the reference electrode and the counter electrode are arranged in the electrode accommodating space and form a cylindrical structure;
the working electrode is arranged in a cylindrical structure formed by the reference electrode and the counter electrode in a surrounding manner;
the working electrode, the reference electrode and the counter electrode are separated by insulating materials, one ends of the working electrode, the reference electrode and the counter electrode extend out of the cylindrical shell to serve as sensing ends, and the sensing ends of the working electrode are provided with sensitive membranes suitable for catalyzing purine substances to perform chemical reactions.
According to the electrode structure of the purine sensor, purine substances in food are detected through a three-electrode system consisting of the working electrode, the reference electrode and the counter electrode, and the electrodes are separated by the insulating material so as to prevent conduction between the electrodes. One end of each of the working electrode, the reference electrode and the counter electrode extends out of the cylindrical shell to serve as an induction end and is used for being in contact with food, a sensitive membrane suitable for catalyzing purine substances to be oxidized or reduced is arranged at the induction end of the working electrode, the purine substances in the food to be detected are oxidized or reduced under the catalysis of the sensitive membrane, the electrode structure detects electric signals such as voltage change and current change in the food, and then the external electrochemical detection module can obtain the concentration of purine in the food according to the electric signals. Meanwhile, the electrode structure of the embodiment of the invention adopts an 'embedded' electrode layout mode that the working electrode is taken as a core and the reference electrode and the counter electrode surround the working electrode, so that the reference electrode and the counter electrode can be as close to the working electrode as possible, thus a three-electrode system can obtain better signal response in the working process, and the sensitivity and the accuracy of the electrode structure for detecting purine substances are further improved. Therefore, the electrode structure of the purine sensor disclosed by the embodiment of the invention is simple in design and small in volume, is convenient to implant into a household appliance to detect purine substances in food, and has the advantages of high detection sensitivity and good accuracy.
In addition, the electrode structure of the purine sensor according to the above embodiment of the present invention may further have the following additional technical features:
in some embodiments of the invention, the cylindrical shell is formed from the insulating material.
In some embodiments of the present invention, the cylindrical shell and the insulating material are integrally formed, that is, the cylindrical shell and the insulating material are an integral structure.
In some embodiments of the invention, the insulating material is at least one selected from the group consisting of polyethylene, polypropylene, and rubber.
In some embodiments of the invention, the working electrode, the reference electrode, and the counter electrode are each independently formed from metal, graphite, or carbon fiber.
In some embodiments of the invention, the sensing end of the reference electrode is provided with silver/silver chloride paste (Ag/AgCl).
In some embodiments of the invention, the sensing edges of the working electrode, the reference electrode, and the counter electrode are curved.
In some embodiments of the invention, the electrode structure of the purine sensor further comprises: and the connecting assembly is arranged at the other ends of the working electrode, the reference electrode and the counter electrode and is suitable for connecting the working electrode, the reference electrode and the counter electrode to an external electrochemical detection module. Thereby, the purine concentration in the food to be detected is obtained by utilizing the external electrochemical detection module according to the electric signals detected by the electrode structure.
In some embodiments of the invention, the counter electrode has a cross-sectional area greater than the cross-sectional area of the working electrode.
In some embodiments of the invention, the cross-sectional area of the counter electrode is 5 to 10 times the cross-sectional area of the working electrode.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic structural diagram of an electrode structure of a purine sensor according to one embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an electrode structure of a purine sensor according to yet another embodiment of the present invention;
fig. 3 is a schematic structural view of an electrode structure of a purine sensor according to still another embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In one aspect of the invention, an electrode structure for a purine sensor is presented. According to an embodiment of the present invention, referring to fig. 1, the electrode structure includes: cylindrical housing 100, reference electrode 200, counter electrode 300, working electrode 400, and insulating material 500. Wherein an electrode receiving space is defined in the cylindrical case 100; the reference electrode 200 and the counter electrode 300 are arranged in the electrode accommodating space, and the reference electrode 200 and the counter electrode 300 are enclosed into a cylindrical structure; the working electrode 400 is arranged in a cylindrical structure enclosed by the reference electrode 200 and the counter electrode 300; the working electrode 400, the reference electrode 200 and the counter electrode 300 are respectively separated by an insulating material 500, one end of the working electrode 400, one end of the reference electrode 200 and one end of the counter electrode 300 extend out of the cylindrical shell 100 to serve as a sensing end, and the sensing end of the working electrode 400 is provided with a sensitive membrane suitable for catalyzing the purine substances to perform chemical reactions.
According to the electrode structure of the purine sensor, purine substances in food are detected through a three-electrode system consisting of the working electrode, the reference electrode and the counter electrode, and the electrodes are separated by the insulating material so as to prevent conduction between the electrodes. One end of each of the working electrode, the reference electrode and the counter electrode extends out of the cylindrical shell to serve as an induction end and is used for being in contact with food, a sensitive membrane suitable for catalyzing purine substances to be oxidized or reduced is arranged at the induction end of the working electrode, the purine substances in the food to be detected are oxidized or reduced under the catalysis of the sensitive membrane, the electrode structure detects electric signals such as voltage change and current change in the food, and then the external electrochemical detection module can obtain the concentration of purine in the food according to the electric signals. Meanwhile, the electrode structure of the embodiment of the invention adopts an 'embedded' electrode layout mode that the working electrode is taken as a core and the reference electrode and the counter electrode surround the working electrode, so that the reference electrode and the counter electrode can be as close to the working electrode as possible, thus a three-electrode system can obtain better signal response in the working process, and the sensitivity and the accuracy of the electrode structure for detecting purine substances are further improved. Therefore, the electrode structure of the purine sensor disclosed by the embodiment of the invention is simple in design and small in volume, is convenient to implant into a household appliance to detect purine substances in food, and has the advantages of high detection sensitivity and good accuracy.
The electrode structure of the purine sensor according to the embodiment of the present invention is described in detail below with reference to FIGS. 1 to 3:
according to an embodiment of the present invention, the cylindrical case 100 may be formed of an insulating material for separating a three-electrode system. Accordingly, the cylindrical case 100 is an insulating case, and the application of the electrode structure can be expanded.
According to the specific example of the invention, the electrode structure of the embodiment of the invention has simple design and small volume, and is suitable for detecting purine substances in food in electric appliances under different application scenes, for example, the electrode structure of the embodiment of the invention can be implanted into electric appliances such as a soybean milk machine, a wall breaking machine, an electric cooker and the like, and the detection of purine substances in food can be completed under different application scenes.
According to the embodiment of the present invention, the cylindrical shell 100 is integrally formed with the insulating material, that is, the cylindrical shell 100 and the insulating material 500 are integrally formed, and the space between the three-electrode system is filled with the insulating material 500. Therefore, the cylindrical shell 100 and the insulating material 500 can be integrally formed by a mold, and the electrodes are inserted into the integrated structure of the cylindrical shell 100 and the insulating material 500, so that the electrode structure is simpler to prepare and lower in preparation cost.
According to an embodiment of the present invention, the insulating material may be an insulating resin, rubber, or plastic material. According to a specific example of the present invention, the insulating material may be at least one selected from polyethylene, polypropylene, and rubber.
According to an embodiment of the present invention, the working electrode 400, the reference electrode 200, and the counter electrode 300 are each independently formed of metal, graphite, or carbon fiber.
The electrode structure of the present invention may also combine the reference electrode 200 and the counter electrode 300 into one to constitute a two-electrode system of the working electrode and the counter electrode according to an embodiment of the present invention.
According to the embodiment of the present invention, the type of the sensing film disposed at the sensing end of the working electrode 400 is not particularly limited as long as it can catalyze the purine-based substance to perform a chemical reaction (e.g., oxidation or reduction reaction), and those skilled in the art can select a conventional sensing film having the above-mentioned function according to actual needs. According to the embodiment of the invention, the sensing end of the reference electrode 200 is provided with silver/silver chloride paste (Ag/AgCl), so that a three-electrode system can be further facilitated to obtain stable voltage, and the detection stability is improved. The electrode surface may not be modified at all.
According to an embodiment of the present invention, the sensing end edges of the working electrode 400, the reference electrode 200, and the counter electrode 300 are arc-shaped. Therefore, the electrode can be prevented from generating point discharge in the working process, and the detection stability is improved.
According to an embodiment of the present invention, the shapes of the working electrode 400, the reference electrode 200, and the counter electrode 300 are not particularly limited. According to a specific example of the present invention, the working electrode 400, the reference electrode 200, and the counter electrode 300 are each in a columnar shape; the cross section of each electrode can be round, square, oval, trapezoid, triangle and the like, and can also be a combination of various shapes.
According to an embodiment of the present invention, referring to fig. 3, the electrode structure of the purine sensor of the present invention further includes: the assembly 600 is connected. According to an embodiment of the present invention, the connection assembly 600 is disposed at the other ends of the working electrode 400, the reference electrode 200, and the counter electrode 300, and is adapted to connect the working electrode 400, the reference electrode 200, and the counter electrode 300 to an external electrochemical detection module. Thereby, the purine concentration in the food to be detected is obtained by utilizing the external electrochemical detection module according to the electric signals detected by the electrode structure. According to a specific example of the present invention, the connection assembly 600 may include conductive pillars, external connection pads, and interfaces corresponding to the respective electrodes.
Fig. 1 and 2 show schematic surface structures of sensing ends of electrodes in an electrode structure of a purine sensor according to an embodiment of the present invention. According to an embodiment of the present invention, the cross-sectional area of the counter electrode 300 is greater than the cross-sectional area of the working electrode 400. Therefore, the signal response of the electrode structure can be further facilitated, and the sensitivity and the accuracy of the electrode structure for detecting purine substances in food are improved.
According to an embodiment of the present invention, the cross-sectional area of the counter electrode 300 is 5 to 10 times the cross-sectional area of the working electrode 400. Therefore, the signal response of the electrode structure can be further facilitated, and the sensitivity and the accuracy of the electrode structure for detecting purine substances in food can be further improved.
In summary, according to the electrode structure of the purine sensor provided by the embodiment of the invention, purine substances in food are detected through a three-electrode system consisting of the working electrode, the reference electrode and the counter electrode, and the electrodes are separated by the insulating material to prevent conduction between the electrodes. One end of each of the working electrode, the reference electrode and the counter electrode extends out of the cylindrical shell to serve as an induction end and is used for being in contact with food, a sensitive membrane suitable for catalyzing purine substances to be oxidized or reduced is arranged at the induction end of the working electrode, the purine substances in the food to be detected are oxidized or reduced under the catalysis of the sensitive membrane, the electrode structure detects electric signals such as voltage change and current change in the food, and then the external electrochemical detection module can obtain the concentration of purine in the food according to the electric signals. Meanwhile, the electrode structure of the embodiment of the invention adopts an 'embedded' electrode layout mode that the working electrode is taken as a core and the reference electrode and the counter electrode surround the working electrode, so that the reference electrode and the counter electrode can be as close to the working electrode as possible, thus a three-electrode system can obtain better signal response in the working process, and the sensitivity and the accuracy of the electrode structure for detecting purine substances are further improved. Therefore, the electrode structure of the purine sensor disclosed by the embodiment of the invention is simple in design and small in volume, is convenient to implant into a household appliance to detect purine substances in food, and has the advantages of high detection sensitivity and good accuracy.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. An electrode structure of a purine sensor, comprising:
a cylindrical case defining therein an electrode accommodating space;
the reference electrode and the counter electrode are arranged in the electrode accommodating space and form a cylindrical structure;
the working electrode is arranged in a cylindrical structure formed by the reference electrode and the counter electrode in a surrounding manner;
the working electrode, the reference electrode and the counter electrode are separated by insulating materials, one ends of the working electrode, the reference electrode and the counter electrode extend out of the cylindrical shell to serve as sensing ends, and the sensing ends of the working electrode are provided with sensitive membranes suitable for catalyzing purine substances to perform chemical reactions.
2. The electrode structure of a purine sensor according to claim 1, wherein the cylindrical housing is formed of the insulating material.
3. The electrode structure of a purine sensor according to claim 2, wherein the cylindrical housing is integrally formed with the insulating material.
4. The electrode structure of a purine sensor according to claim 2, wherein the insulating material is at least one selected from the group consisting of polyethylene, polypropylene and rubber.
5. The electrode structure of a purine sensor according to claim 1, wherein the working electrode, the reference electrode and the counter electrode are each independently formed of metal, graphite or carbon fiber.
6. The electrode structure of a purine sensor according to claim 1, wherein the sensing end of the reference electrode is provided with silver/silver chloride slurry.
7. The electrode structure of a purine sensor according to claim 1, wherein sensing end edges of the working electrode, the reference electrode and the counter electrode are arc-shaped.
8. The electrode structure of a purine sensor according to claim 1, further comprising:
and the connecting assembly is arranged at the other ends of the working electrode, the reference electrode and the counter electrode and is suitable for connecting the working electrode, the reference electrode and the counter electrode to an external electrochemical detection module.
9. The electrode structure of a purine sensor according to any one of claims 1 to 8, wherein the cross-sectional area of the counter electrode is larger than the cross-sectional area of the working electrode.
10. The electrode structure of a purine sensor according to claim 9, wherein the cross-sectional area of the counter electrode is 5 to 10 times the cross-sectional area of the working electrode.
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Application publication date: 20200310 |