Method and device for measuring content of dissolved hydrogen, and computer program product

Abstract

The invention relates to the field of dissolved hydrogen detection, in particular to a dissolved hydrogen content measuring method and device and a computer program product, and the dissolved hydrogen content measuring method comprises the following steps: inserting a test electrode into a solution to be measured; inserting a counter electrode into the electrolyte solution; connecting the to-be-detected solution and the electrolyte solution through a salt bridge; acquiring a potential difference between the test electrode and the counter electrode; and obtaining the dissolved hydrogen content in the solution to be detected according to the potential difference. When the dissolved hydrogen in the to-be-tested solution and the test electrode are spontaneously oxidized, electrons are gathered on the surface of the test electrode, and a potential difference is generated between the test electrode and the counter electrode. At the moment, the potential detection device is arranged between the test electrode and the counter electrode, so that the potential difference between the test electrode and the counter electrode can be detected. The content of dissolved hydrogen in the to-be-tested solution directly affects the number of transferred electrons, and the number of transferred electrons directly affects the potential difference between the test electrode and the counter electrode.

Description

Technical Field

[0001] This patent relates to the field of dissolved hydrogen detection, and in particular to a dissolved hydrogen content measurement method, a measurement device, and a computer program product. Background Art

[0002] In the field of water electrolysis hydrogen production, it is usually necessary to monitor the content of gaseous hydrogen to ensure and optimize the electrolysis production process. The inventors of the present application have found that the detection of dissolved hydrogen content can also be a key parameter in such fields, which can timely evaluate the system status and provide corresponding feedback to the system.

[0003] To ensure the safety and efficiency of the hydrogen energy generation process, it is becoming increasingly necessary to develop effective and low-cost sensors for real-time detection of dissolved hydrogen.

[0004] In the prior art, gas chromatography is a mature method for determining dissolved hydrogen, but it cannot achieve rapid, in-situ, real-time monitoring and analysis. With the improvement of electrolysis technology, real-time, in-situ determination of dissolved hydrogen content has become an important demand. Summary of the invention

[0005] In order to solve or at least partially solve the above technical problems, this patent provides a method for measuring the content of dissolved hydrogen, which includes: Insert the test electrode into the solution to be tested.

[0006] The counter electrode is inserted into the electrolyte solution.

[0007] The test solution and the electrolyte solution are connected through a salt bridge.

[0008] Obtain the potential difference between the test electrode and the counter electrode.

[0009] The dissolved hydrogen content in the solution to be tested is obtained based on the potential difference.

[0010] Preferably, in the step of obtaining the dissolved hydrogen content in the solution to be tested according to the potential difference, The potential difference and dissolved hydrogen content are converted according to the following rules: △ E (V) = E 0– E 1 = 0.048 + 0.597 c (ppm) Where E is the potential difference, E0 and E1 are the voltage values ​​before and after the addition of dissolved hydrogen, and c is the dissolved hydrogen concentration.

[0011] The embodiment of the present application also discloses a dissolved hydrogen content measuring device, comprising: a test electrode, a counter electrode, an electrolyte tank, a salt bridge and a potential sensor. The test electrode is used to insert into the solution to be tested, the counter electrode and the electrolyte tank, the counter electrode is inserted into the electrolyte of the electrolyte tank, the two ends of the salt bridge are respectively connected to the solution to be tested and the electrolyte tank, the two ends of the potential sensor are respectively connected to the test electrode and the counter electrode, and are used to measure the potential difference between the test electrode and the counter electrode, so as to obtain the dissolved hydrogen content in the solution to be tested according to the potential difference.

[0012] Preferably, the system further comprises: a controller, which is in communication with the potential sensor, and the controller converts the potential difference and the dissolved hydrogen content according to the following rules: △ E (V) = E 0– E 1 = 0.048 + 0.597 c (ppm) Where E is the potential difference, E0 and E1 are the voltage values ​​before and after the addition of dissolved hydrogen, and c is the dissolved hydrogen concentration.

[0013] Preferably, it further comprises: a display, which is communicatively connected with the controller and is used to display the dissolved hydrogen content.

[0014] Preferably, the test electrode is conductive glass modified with a catalyst, the counter electrode is Pt, and the electrolyte of the counter electrode is water.

[0015] Preferably, the test electrode is ITO with nano-Pt particles modified on the surface, and the diameter of the nano-Pt particles is about 70 nm.

[0016] Preferably, a plurality of inwardly recessed receiving pits are evenly distributed on the outer surface of the conductive glass, and the receiving pits are used to carry the catalyst modified on the conductive glass.

[0017] The embodiments of the present application further disclose a computer program product. When a computer program in the computer program product is executed by a processor, the computer program can implement the following steps: Get the potential difference value; The potential difference is converted into dissolved hydrogen content according to the following rules: △ E (V) = E 0– E 1 = 0.048 + 0.597 c (ppm) Where E is the potential difference, E0 and E1 are the voltage values ​​before and after the addition of dissolved hydrogen, and c is the dissolved hydrogen concentration.

[0018] Preferably, it also includes: The dissolved hydrogen content is sent to a display for display.

[0019] Since dissolved hydrogen will produce a spontaneous oxidation reaction with the surface of the test electrode, dissolved hydrogen of different concentrations will produce different degrees of spontaneous oxidation reaction with the test electrode. Along with the generation of the spontaneous oxidation reaction, a potential difference will be generated between the test electrode and the counter electrode. As the potential difference is generated, electrons will gather on the surface of the test electrode, and a potential difference will be generated between the test electrode and the counter electrode. The concentration of dissolved hydrogen can be obtained by converting the potential difference value. This patent can achieve real-time and in-situ monitoring of the dissolved hydrogen content by setting up a test electrode and a counter electrode and detecting the potential difference value. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the implementation of this patent, the following is a brief introduction to the relevant drawings. It can be understood that the drawings described below are only used to illustrate some implementations of this patent, and ordinary technicians in this field can also obtain many other technical features and connection relationships not mentioned in this article based on these drawings.

[0021] Figure 1 This is a schematic diagram of the structure of a dissolved hydrogen content measuring device according to an embodiment of the present patent; Figure 2 This is a schematic diagram of nano Pt particles on the surface of a test electrode in an embodiment of the present patent; Figure 3 It is a comparison chart of potential difference and dissolved hydrogen content in the embodiment of the present patent; Figure 4 It is a linear relationship diagram between the potential difference and the dissolved hydrogen content in the embodiment of the present patent; Figure 5 This is a flow chart of a method for measuring dissolved hydrogen content according to an embodiment of the present patent.

[0022] Description of reference numerals: 1. Test electrode; 2. Counter electrode; 3. Electrolyte tank; 4. Potential sensor; 5. Salt bridge; 6. Solution to be tested. DETAILED DESCRIPTION

[0023] Unless otherwise defined, technical or scientific terms used in the present specification and claims shall have the common meanings understood by persons having ordinary skills in the technical field to which the present invention belongs.

[0024] All numerical values ​​from the lowest value to the highest value listed in this article refer to all numerical values ​​obtained by increments of one unit between the lowest value and the highest value when the difference between the lowest value and the highest value is more than two units.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0026] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more.

[0027] The patent is described in detail below in conjunction with the accompanying drawings.

[0028] In the prior art, gas chromatography is a mature method for determining dissolved hydrogen, but it cannot achieve rapid, in-situ, real-time monitoring and analysis. Self-powered sensors have received increasing attention due to their lack of external power supply, low cost, and real-time monitoring capabilities. With the improvement of electrolysis technology, real-time, in-situ determination of dissolved hydrogen content has become an important requirement.

[0029] In view of this, the first embodiment of this patent proposes a dissolved hydrogen content measurement method, a measurement device and a computer program product to solve the above technical problems.

[0030] First embodiment refer to Figure 5 As shown, this patent provides a method for measuring the content of dissolved hydrogen, and the content measurement method includes: S1. Insert the test electrode 1 into the solution 6 to be tested.

[0031] S2. Insert the counter electrode 2 into the electrolyte solution.

[0032] S3, connecting the solution to be tested 6 and the electrolyte solution via the salt bridge 5.

[0033] S4. Obtain the potential difference between the test electrode 1 and the counter electrode 2.

[0034] S5. deriving the dissolved hydrogen content in the solution 6 to be tested according to the potential difference.

[0035] The test electrode 1 is connected to the counter electrode 2 by a wire, and a potential sensor 4 for detecting a potential difference is arranged in the middle of the wire. When detecting the dissolved hydrogen content in the test solution 6, the test electrode 1 is placed in the test solution 6. The test electrode 1 reacts with the dissolved hydrogen in the test solution 6, and the counter electrode 2 is placed in the electrolyte solution to produce a redox reaction.

[0036] The two ends of the salt bridge 5 are connected to the test solution 6 and the electrolyte solution respectively. Since the test solution 6 is different from the electrolyte solution, the different migration speeds of positive and negative ions through the solution interface will form a double electric layer at the interface, thereby generating a liquid junction potential. Liquid junction potential is one of the main reasons for the error in potential analysis. Inserting a salt bridge 5 between the test solution 6 and the electrolyte solution to replace the direct contact between the two solutions can reduce and stabilize the liquid junction potential. Therefore, in order to achieve an effective connection between the two and avoid interference caused by direct contact, we set a salt bridge 5 made of agar gel filled with saturated potassium chloride solution between the two solutions. At this time, the dissolved hydrogen undergoes a series of complex electrochemical reactions with the catalyst on the surface of the test electrode 1, the core step of which is proton-coupled electron transfer. In this process, hydrogen decomposes to form protons (H + ) and electron (e - ).

[0037] Specifically, this process can be described as follows: under the action of the catalyst, hydrogen decomposes to form hydrogen ions and electrons, and the hydrogen ions diffuse from the surface of the test electrode 1 into the solution and are balanced by the salt bridge. At the same time, after the reaction occurs at the test electrode 1, electrons are attached to the surface of the test electrode 1, and the number of electrons increases with the increase in the concentration of dissolved hydrogen. Due to the aggregation of electrons, the potential at the test electrode 1 gradually decreases, thereby generating a potential difference between the test electrode 1 and the counter electrode 2. Since the potential balance between the test solution 6 and the electrolyte solution has been achieved through the salt bridge 5, the potential difference between the test electrode 1 and the counter electrode 2 is completely caused by the reaction between the test electrode 1 and the dissolved hydrogen, and is not affected by the original potential difference between the test solution 6 and the electrolyte solution.

[0038] Furthermore, when different concentrations of dissolved hydrogen react with the test electrode 1, the number of electrons attached will also be different, and the change in the number of electrons attached will cause the potential difference between the test electrode 1 and the counter electrode 2 to change. Therefore, it can be deduced that when the content of dissolved hydrogen changes, the potential difference between the relative test electrode 1 and the counter electrode 2 will also change. By detecting the potential difference between the test electrode 1 and the counter electrode 2, real-time monitoring of the change in dissolved hydrogen concentration can be achieved.

[0039] Furthermore, in the step of obtaining the dissolved hydrogen content in the test solution 6 according to the potential difference, The potential difference and dissolved hydrogen content are converted according to the following rules:

[0040] Where E is the potential difference, is the standard electrode potential, and R is the universal gas constant, which is 8.314472 J·K -1 ·mol -1 , T is the absolute temperature in Kelvin, and F is the Faraday constant, which is 9648×10 4 C / mol, n is the electron transfer number in the stoichiometric equation, and a is the dissolved hydrogen concentration.

[0041] By converting the potential difference and the dissolved hydrogen content, we can intuitively obtain the dissolved hydrogen content in the test solution 6 through the potential difference. Since the potential difference can be monitored in real time, the dissolved hydrogen in the test solution 6 can also be monitored in real time.

[0042] Specifically, since the number of electron transfers is difficult to obtain, the reference Figure 4 As shown in the figure, when the detection concentration range of dissolved hydrogen is 162 ppb-1.62 ppm, there is a linear relationship between the potential difference between the electrode to be tested and the counter electrode 2 and the concentration of dissolved hydrogen: △E (V) = 0.048 + 0.597c, where △E = E0 – E1, E0 and E1 are the voltage values ​​before and after the addition of dissolved hydrogen, respectively, and c is the dissolved hydrogen concentration. Through this stable linear relationship, we can directly convert the potential difference into the dissolved hydrogen concentration, thereby achieving real-time control of the dissolved hydrogen concentration in the solution to be tested 6.

[0043] Second embodiment In the first embodiment of the present application, a method for measuring the content of dissolved hydrogen is disclosed. In the second embodiment of the present application, a device for measuring the content of dissolved hydrogen is also disclosed, and can be applied to the measurement method in the first embodiment. The device for measuring the content of dissolved hydrogen includes: a test electrode 1, a counter electrode 2, an electrolyte tank 3, a salt bridge 5 and a potential sensor 4. The test electrode 1 is used to insert into the solution to be tested 6, the counter electrode 2 and the electrolyte tank 3, the counter electrode 2 is inserted into the electrolyte of the electrolyte tank 3, the two ends of the salt bridge 5 are respectively connected to the solution to be tested 6 and the electrolyte tank 3, the two ends of the potential sensor 4 are respectively connected to the test electrode 1 and the counter electrode 2, and are used to measure the potential difference between the test electrode 1 and the counter electrode 2, so as to obtain the dissolved hydrogen content in the solution to be tested 6 according to the potential difference.

[0044] When detecting the dissolved hydrogen content, it is necessary to convert the potential difference into a change in the dissolved hydrogen concentration by measuring the potential difference. Therefore, the salt bridge 5 can first balance the potential difference between the solution to be tested 6 and the electrolyte to avoid interfering with the subsequent measurement of the potential difference between the test electrode 1 and the counter electrode 2. The test electrode 1 is placed in the solution to be tested 6, and reacts with the dissolved hydrogen in the solution to be tested 6 to generate electrons at the test electrode 1, so that a large number of electrons are attached to the surface of the test electrode 1. The number of electrons generated by dissolved hydrogen of different concentrations is also different. The electrolyte tank 3 is used to store the electrolyte. When the counter electrode 2 is placed in the electrolyte, an oxidation reaction will occur on the surface of the counter electrode 2 so that it can be used for detection by the potential sensor 4. The two ends of the potential sensor 4 are respectively connected to the test electrode 1 and the counter electrode 2. Since there is electron accumulation on the surface of the test electrode 1, the electrons carry a negative charge, which reduces the potential at the test electrode 1, thereby forming a potential difference between the counter electrode 2 and the test electrode 1. The potential sensor 4 can feedback this potential difference in real time and realize the detection of the dissolved hydrogen concentration by calculating the potential difference. The potential sensor 4 may be a voltmeter, a voltage detector or other equipment as long as it can provide feedback of the potential difference in real time.

[0045] Specifically, the measuring device further includes: a controller, which is in communication with the potential sensor 4, and the controller converts the potential difference and the dissolved hydrogen content according to the following rules: △ E (V) = E 0– E 1 = 0.048 + 0.597 c (ppm) Where E is the potential difference, E0 and E1 are the voltage values ​​before and after the addition of dissolved hydrogen, and c is the dissolved hydrogen concentration.

[0046] The controller works closely with the potential sensor 4, and the former is responsible for collecting the raw data provided by the latter on the potential difference between the test electrode 1 and the counter electrode 2. Based on these data, the controller uses the preset conversion rules, combined with correction parameters that take into account factors such as temperature, to accurately calculate the actual content of dissolved hydrogen in the sample to be tested. It is worth noting that, except for certain specific dissolved hydrogen concentration ranges, there is a linear relationship between the potential difference and the concentration, and in other dissolved hydrogen concentrations, this process is not a simple linear relationship mapping; on the contrary, it involves complex physical and chemical principles and precision engineering practices. For example, according to the Nernst equation, under certain conditions, the standard electromotive force of the standard hydrogen electrode is 0 volts; for non-standard conditions, a correction term must be introduced to ensure the accuracy of the results. In addition, considering that drift may occur during long-term operation, regular calibration is also one of the important links to ensure the stability of system performance. Through regular calibration and correction of results, the accuracy of the dissolved hydrogen concentration value we obtained has been further improved.

[0047] Specifically, the measuring device also includes: a display, which is connected to the controller for displaying the dissolved hydrogen content. After calculating the dissolved hydrogen content in the solution 6 to be tested, the controller displays the value of the dissolved hydrogen content through the display. At this time, the user can intuitively obtain the value through the display, and the dissolved hydrogen content will gradually change, so the display can realize real-time display of the dissolved hydrogen concentration, so that the user can observe in real time. The time for user conversion is reduced, thereby improving the work efficiency of the dissolved hydrogen concentration observation.

[0048] Specifically, the test electrode 1 is a conductive glass modified with a catalyst, the counter electrode 2 is Pt, and the electrolyte of the counter electrode 2 is water.

[0049] Pt is an inert metal and is usually used as an electrode material in electrochemical processes. It is very stable. The potential sensor 4 is equivalent to an open circuit state, and basically no electrons pass through. Therefore, the Pt on the test electrode 2 does not undergo a catalytic reaction in water, and the initial potential remains constant, which facilitates the potential sensor 4 to obtain the potential difference between the test electrode 1 and the counter electrode 2.

[0050] Furthermore, after the test electrode 1 is placed in the test solution 6, the test electrode 1 needs to react with the test solution 6 so that electrons are generated on the surface of the test electrode 1, and the generated electrons are attached to the test electrode 1. Conductive glass achieves conductivity by coating a conductive film such as an indium tin oxide film on its surface. This conductive film has a high electrical conductivity and can effectively conduct current and signals. When detecting dissolved hydrogen, it is necessary to detect dissolved hydrogen by detecting the potential difference. Therefore, the good conductivity of the conductive glass causes the electrons to aggregate and bring more negative charges, so as to facilitate the detection of the potential difference between the electrode 2 and the test electrode 1. At the same time, since the corrosiveness of some of the test solutions 6 is unknown, and the conductive glass has good corrosion resistance and wear resistance due to its special structure and composition, it can maintain stable performance in harsh environments to cope with various different test solutions 6.

[0051] In addition, aqueous solutions have high ion conductivity, are stable, and are non-flammable. At the same time, as one of the most abundant resources in nature, the cost of obtaining water is much lower than other organic solutions, which can reduce the production cost of the test device. In addition, aqueous electrolytes can provide good mechanical flexibility to cope with various mechanical strains generated during use.

[0052] Preferably, the test electrode 1 is ITO with nano-Pt particles modified on the surface, and the diameter of the nano-Pt particles is about 70 nm.

[0053] Since Pt is a precious metal, it has extremely high electrochemical stability, which means that it will not react chemically or corrode in most electrolyte solutions. This inertness makes Pt an ideal electrode material because it will not react with other components in the electrolyte, so that Pt only reacts with the electrolyte solution as a catalyst, ensuring the accuracy of the detection structure. At the same time, Pt is an excellent conductor that can effectively transmit electrons. In the electrochemical reaction, electrons need to gather on the surface of the test electrode 1 and form a stable potential difference. The high conductivity of Pt ensures the efficient conduction of this process, thereby improving the efficiency of the electrochemical reaction. The test electrode 1 needs to gather the electrons generated by the nano Pt particles as a catalyst and the dissolved hydrogen in the solution to be tested 6 on its own body and generate a potential difference at the counter electrode 2, so the ITO modified with nano Pt can react better and ensure that a stable potential difference is formed between the test electrode 1 and the counter electrode 2.

[0054] Furthermore, Pt is regarded as a valuable resource due to its scarcity and wide application value. Especially in the field of electrochemical sensing, the use of pure Pt to manufacture test electrodes 1 not only increases production costs but also limits the possibility of large-scale applications. To this end, researchers have explored a more cost-effective method to replace the traditional solution, that is, to form a composite structure as a working electrode by depositing Pt particles of a specific size, such as about 70nm, on an ITO substrate. This method not only significantly reduces the mass of Pt required per unit area, but also benefits from the nanoscale effect. These tiny but numerous Pt grains can greatly increase the surface area to volume ratio, thereby enhancing the overall catalytic activity and selectivity. More importantly, as the concept of green chemistry becomes more and more popular, the development of recyclable high-performance catalysts has become one of the important trends in the development of the industry. The test electrode 1 made of Pt nanoparticles can reduce recycling costs and reduce damage to the environment.

[0055] In addition, a plurality of inwardly recessed receiving pits are evenly distributed on the outer surface of the conductive glass, and the receiving pits are used to carry the catalyst modified on the conductive glass.

[0056] When making the test electrode 1, it is necessary to modify the nano Pt particles as a catalyst on the conductive glass so that the catalyst can react with the dissolved hydrogen in the solution to be tested 6, thereby causing the generation and aggregation of electrons. In this process, by depositing metal nanoparticles on the surface of the conductive glass, the number of active sites can be significantly increased, thereby improving the reaction efficiency of the catalyst. For this reason, the holding pits located on the surface of the conductive glass are properly designed to effectively promote the deposition of metal nanoparticles and ensure that they are firmly attached to the surface. In addition, in order to further enhance the bonding force between the metal nanoparticles and the conductive glass, metal organic frameworks such as MOFs and COFs can also be introduced as intermediate layers. Although the conductivity of these framework materials is relatively poor, they have a rich porous structure, which provides more attachment points for the nano Pt particles as catalysts. More importantly, by combining these framework materials with other highly conductive materials such as graphene, or by adding nano Pt particles as in the present application, not only can the lack of conductivity be compensated, but also the performance of the entire electrode system can be further improved.

[0057] Third embodiment In the present application, the device of the second embodiment and the method of the first embodiment can detect the concentration of dissolved hydrogen in the test solution 6 in real time by converting the potential difference. However, the most intuitive thing obtained in this process is the potential difference between the test electrode 1 and the counter electrode 2, so it is necessary to convert the potential difference to the concentration of dissolved hydrogen so that the user can intuitively obtain the concentration of dissolved hydrogen in the test solution 6.

[0058] In view of this, a computer program product is further disclosed in a third embodiment of the present application. When a computer program in the computer program product is executed by a processor, the following steps can be implemented: Get the potential difference value; The potential difference is converted into dissolved hydrogen content according to the following rules: △ E (V) = E 0– E 1 = 0.048 + 0.597 c (ppm) Where E is the potential difference, E0 and E1 are the voltage values ​​before and after the addition of dissolved hydrogen, and c is the dissolved hydrogen concentration.

[0059] When calculating the concentration of dissolved hydrogen, the computer program first measures the potential difference between the test electrode 1 and the counter electrode 2, and then substitutes this potential difference value into the pre-set conversion rule, so that the corresponding dissolved hydrogen content value can be obtained. In this way, as the potential difference changes in real time, the dissolved hydrogen content can also be updated instantly.

[0060] In particular, when we need to accurately measure the dissolved hydrogen concentration in a narrow range, i.e. 162 ppb-1.62 ppm, according to the existing research data reference Figure 3 and Figure 4 As shown, we can find that in this range, there is an obvious linear relationship between dissolved hydrogen concentration and potential difference.

[0061] Specifically, this linear relationship can be expressed by the formula △E (V) = 0.048 + 0.597c, where △E represents the potential difference before and after the reaction with dissolved hydrogen, C represents the actual concentration of dissolved hydrogen, and 0.048 and 0.597 are coefficients determined by experiments. By applying this simple mathematical model, it is not only possible to effectively reduce the errors that may occur during the measurement process, but also to significantly improve the data processing efficiency, so that the final results can be presented to the user more quickly. This method is particularly useful for applications that require fast response.

[0062] Meanwhile, the computer program product further comprises: sending the content of dissolved hydrogen to a display for display.

[0063] After obtaining the potential difference between the test electrode 1 and the counter electrode 2, the computer program converts it into the dissolved hydrogen concentration. In order to convey this information to the user, the most intuitive way is to display the value of the dissolved hydrogen concentration on a display. In this way, the user can directly read the value on the display to understand the specific concentration of dissolved hydrogen. In addition, the computer program can also send the information of the dissolved hydrogen concentration to the audio equipment and broadcast the specific dissolved hydrogen concentration value by voice. This method not only makes it convenient for users to quickly grasp the specific concentration of dissolved hydrogen, but also improves the efficiency and accuracy of information transmission.

[0064] Finally, it should be noted that ordinary technicians in this field can understand that in order to make readers better understand this patent, the implementation methods of this patent propose many technical details. However, even without these technical details and various changes and modifications based on the above-mentioned implementation methods, the technical solutions claimed for protection by the claims of this patent can be basically realized. Therefore, in practical applications, various changes can be made to the above-mentioned implementation methods in form and details without departing from the spirit and scope of this patent.

Claims

1. A method for measuring dissolved hydrogen content, characterized in that: include: Insert the test electrode into the solution to be tested; inserting the counter electrode into the electrolyte solution; Connecting the test solution and the electrolyte solution via a salt bridge; obtaining a potential difference between a test electrode and a counter electrode; Determining the dissolved hydrogen content in the solution to be tested according to the potential difference; In the step of obtaining the dissolved hydrogen content in the solution to be tested according to the potential difference, The potential difference and the dissolved hydrogen content are converted according to the following rules: △ E (V) = E 0 – E 1= 0.048 + 0.597 c (ppm) Where E is the potential difference, E0 and E1 are the voltage values ​​before and after the addition of dissolved hydrogen, and c is the dissolved hydrogen concentration.

2. A dissolved hydrogen content measuring device, characterized in that: include: A test electrode, used to insert into the solution to be tested; a counter electrode and an electrolyte tank, wherein the counter electrode is inserted into the electrolyte of the electrolyte tank; A salt bridge, wherein two ends of the salt bridge are respectively connected to the solution to be tested and the electrolyte tank; A potential sensor, the two ends of which are respectively connected to the test electrode and the counter electrode, and is used to measure the potential difference between the test electrode and the counter electrode, so as to obtain the dissolved hydrogen content in the solution to be tested according to the potential difference; A controller is in communication with the potential sensor, and the controller converts the potential difference and the dissolved hydrogen content according to the following rules: △ E (V) = E 0 – E 1= 0.048 + 0.597 c (ppm) Where E is the potential difference, E0 and E1 are the voltage values ​​before and after the addition of dissolved hydrogen, and c is the dissolved hydrogen concentration.

3. The dissolved hydrogen content measuring device according to claim 2, characterized in that: Also includes: A display is connected to the controller for displaying the dissolved hydrogen content.

4. The dissolved hydrogen content measuring device according to claim 2, characterized in that: The test electrode is conductive glass modified with a catalyst; The counter electrode is Pt, and the electrolyte of the counter electrode is water.

5. The dissolved hydrogen content measuring device according to claim 4, characterized in that: The test electrode is ITO with nano Pt particles modified on the surface; The diameter of the nano Pt particles is about 70 nm.

6. The dissolved hydrogen detection device according to claim 5, characterized in that: A plurality of inwardly recessed receiving pits are evenly distributed on the outer surface of the conductive glass, and the receiving pits are used to carry catalysts modified on the conductive glass.

7. A computer program product, characterized in that When the computer program in the computer program product is executed by a processor, the computer program can implement the following steps: Get the potential difference value; The potential difference is converted into the content of dissolved hydrogen according to the following rule: △ E (V) = E 0 – E 1= 0.048 + 0.597 c (ppm) Where E is the potential difference, E0 and E1 are the voltage values ​​before and after the addition of dissolved hydrogen, and c is the dissolved hydrogen concentration.

8. The computer program product according to claim 7, characterized in that Also includes: The dissolved hydrogen content is sent to a display for display.

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