WO2020232677A1 - 一种离子选择性电极、离子检测传感器及离子检测系统 - Google Patents
一种离子选择性电极、离子检测传感器及离子检测系统 Download PDFInfo
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- 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
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- G01N27/333—Ion-selective electrodes or membranes
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- the invention belongs to the technical field of ion selective electrode preparation, and specifically relates to an ion selective electrode, an ion detection sensor and an ion detection system for detecting the ion concentration in a liquid substance.
- FIG. 3 shows a schematic diagram of the first detection current and the second detection current collected in the present invention.
- the preparation method of ion selective electrode includes the following steps:
- Ion selective electrode including a conductive substrate, an ion selective membrane, and a carbon-based material layer arranged between the conductive substrate and the ion selective membrane;
- Ion selective electrode including a conductive substrate, an ion selective membrane, and a carbon-based material layer arranged between the conductive substrate and the ion selective membrane;
- Ion selective electrode including a conductive substrate, an ion selective membrane, and a carbon-based material layer arranged between the conductive substrate and the ion selective membrane;
- the preparation method of ion selective electrode includes the following steps:
- the carbon-based material layer is formed by coating and drying a carbon-based slurry on the surface of the conductive substrate.
- the carbon-based slurry includes a carbon-based material, conductive carbon black, a binder, and an organic solvent;
- the thickness of the base material layer is 200 microns;
- the carbon-based material is activated carbon;
- the binder is polytetrafluoroethylene;
- the organic solvent is N,N-dimethylacetamide;
- the carbon-based material is electrically conductive
- the mass ratio of carbon black is 0.1:1, the mass ratio of the total mass of carbon-based materials and conductive carbon black to the binder is 10:1; the mass ratio of the organic solvent to the binder is 9:1;
- step 2) The ion selective mixture is coated on the carbon-based material layer obtained in step 1) and dried to form an ion selective membrane to obtain the ion selective electrode.
- the conductive substrate is copper foil
- the conductive substrate is a hard graphite sheet
- the ion selective membrane is formed by coating and drying an ion selective mixture on the carbon-based material layer, and the ion selective mixture includes an ammonium ion carrier, a selective base, a binder and a plasticizer;
- the thickness of the selective membrane is 250 microns;
- the ion selective mixture includes the following components in weight percentage:
- Plasticizer diisooctyl sebacate 32.95%
- the concentration information of the ion to be detected adsorbed by the ion detection sensor is analyzed.
- FIG. 1 shows a schematic diagram of the principle structure of an ion detection sensor in an embodiment.
- the ion detection sensor includes a first current collector 11, a second current collector 12 and a measuring device 13.
- the working principle of the ion detection sensor is as follows:
- the cation or anion to be measured is stored in the ion-selective electrode, and the concentration of the ion to be measured will be directly Affecting the adsorption capacity of the ion to be measured by the ion selective electrode, an electronic current will be generated in the corresponding external circuit.
- the electronic current ion current, and the total amount of charge transferred can be approximately regarded as the adsorption capacity of the ion.
- solutions containing different concentrations of ions to be tested have different amounts of electricity during the adsorption/desorption process. Therefore, the above method can be used to measure the electricity value of a series of known ion concentrations, and produce a standard curve of ion concentration relative to electricity. For a solution with an unknown concentration, the measured electricity value can be brought into the standard curve to obtain the corresponding calcium ion concentration.
- S21 Output a charging instruction for the controller.
- the controller applies a DC voltage of 0.2V to the first current collector 11 and the second current collector 12, and the ions in the liquid flow channel are at a voltage of less than that of the DC voltage.
- the electrode under the action where the cations move to the cathode and the anions move to the anode, generating an ion current, and the adsorbed ions are stored in the electric double layer of the ion selective electrode, correspondingly in the first collector 11 and the second collector
- Electron transfer is generated between the electrical appliances 12 to generate an electronic current, that is, a first detection current of the controller to the ion detection sensor is generated.
- the direction of the first detection current is opposite to the current direction of the charging current applied to the measuring device by the controller and decays rapidly.
- S23 Output a discharge instruction for the controller.
- the controller applies a voltage of 0V to the first current collector 11 and the second current collector 12, and the ions in the liquid flow channel are at a level of DC voltage.
- the electrode under the action where cations desorb from the cathode, and anions desorb from the anode to generate ionic current.
- Electron transfer occurs between the first current collector 11 and the second current collector 12 to generate an electronic current, that is,
- the controller detects the second detection current of the ion sensor.
- the direction of the second detection current is opposite to the current direction of the discharge current applied to the measuring instrument by the controller and decays rapidly.
- FIG. 3 shows a schematic diagram of the collected first detection current and the second detection current.
- the first detection current is I1
- the second detection current is I2
- the horizontal axis represents the time axis
- the vertical axis is the current amplitude
- the time axis is enclosed by the curve of the first detection current.
- the shadow area is equal to the shadow area enclosed by the curve of the time axis and the second detection current because the charge and discharge points are the same.
- S261 Integrate the first detection current I1 and the second detection current I2 with time (as shown in the formula) to calculate the electric quantity of the ion to be measured adsorbed by the ion detection sensor.
- S263 Calculate the concentration information of the ion to be tested in the solution to be tested according to the average value of the electric quantity of the ion to be tested.
- the concentration information of the specific ion in the solution to be detected is represented by C. According to the average value of the ion electric quantity to be measured, it is substituted into the standard curve of ion concentration relative to electric quantity to obtain the corresponding ion concentration.
- the measuring instrument includes the ion selective electrode and the counter electrode of Examples 1-14, and the polarity of the counter electrode and the ion selective electrode are opposite.
- a liquid flow channel for loading the solution to be tested is formed between the ion selective electrode and the counter electrode.
- the electric quantity is measured for a series of known ion concentrations, and a standard curve of ion concentration relative to electric quantity is produced.
- the electric quantity value is obtained by the above-mentioned detection method, and then brought into the standard curve to obtain the corresponding ion concentration.
- Table 1 for the comparison of the detection accuracy of the measuring instrument including the ion selective electrodes of Examples 1-14 and the prior art.
- the present invention also provides a specific ion detection system, including:
- FIG. 4 shows a schematic diagram of the principle structure of a specific ion detection system in an embodiment.
- the specific ion detection system 4 includes an instruction output module 41, an acquisition module 42, a circulation module 43 and a processing module 44.
- the collection module 42 coupled with the instruction output module 41 is used to wait for the controller to start charging the specific ion detection sensor, and collect the first detection current of the controller to the specific ion detection sensor.
- the amplitude of the first detection current is equal to the amplitude of the ion current generated by the specific ion detection sensor during the charging process.
- the instruction output module 41 outputs a discharge instruction for the controller.
- the controller applies a voltage of 0V to the first current collector and the second current collector, and the ions in the liquid flow channel are acted on by the direct current voltage.
- the second calculation unit 442 is configured to take the absolute value of the calculated power value, and calculate the average value of the specific ion power according to the number of cycles of outputting the charging command and the discharging command.
- the control unit is used to output detection instructions
- the measuring unit is configured to receive the detection instruction, and according to the detection instruction, feed back the number of specific ions in the solution to be detected;
- FIG. 5A shows a schematic diagram of the principle structure of a specific ion detection sensor in an embodiment.
- the specific ion detection sensor 1 includes a control unit 14, a first power collection unit 15, a second power collection unit 16, and a measurement unit 13.
- the measurement unit 13 includes a specific ion selective electrode 131 and a counter electrode 132 having a polarity opposite to the specific ion selective electrode 131.
- the first power collection unit 15 and the second power collection unit 16 are used to form the connection between the control unit and the measuring device, and the first power collection unit 15 is set in the measurement unit 13 specifically
- the ion selective electrode and the second collector unit 16 are arranged on the counter electrode in the measurement unit.
- the specific ion selective electrode 131 is sequentially provided with a conductive substrate 131A, a carbon-based material layer 131B (the carbon-based material can be activated carbon, carbon nanotube, graphene, etc.), and a specific ion selective film 131C from top to bottom.
- the carbon-based material layer 131B takes the activated carbon surface 131B as an example.
- the conductive substrate 131A needs to have good electrical conductivity, and the sheet resistance needs to be less than 10 ohms per square centimeter.
- graphite sheet, graphite paper, conductive glass, titanium sheet and other materials can be used to prepare the conductive substrate 131A.
- the activated carbon surface 131B needs to be attached to the conductive substrate 131A.
- the activated carbon surface 131B is a carbon surface formed by activated carbon slurry, and the thickness is controlled between 50-300 microns.
- the activated carbon slurry includes activated carbon, conductive carbon black, polyvinylidene fluoride, and an organic solvent.
- the central processing module 51 is configured to send a detection instruction for the specific ion.
- the central processing module is configured to cyclically output the detection instruction to the measurement module 52 at a preset detection cycle.
- the specific ion carrier in the electrolyte selective adsorption raw material is replaced with an electrolyte carrier corresponding to the electrolyte.
- the conductive substrate needs to have good electrical conductivity, and the sheet resistance needs to be less than 10 ohms per square centimeter.
- graphite sheets, graphite paper, conductive glass, titanium sheets and other materials can be used to prepare conductive substrates.
- the control unit 521 receives the charging instruction output by the central processing module 51.
- the control unit 521 applies a DC voltage of 0.2V to the first collector 11 and the second collector 12, and the ions in the flow channel are Move to the electrode under the action of voltage, wherein the cations move to the cathode and the anions move to the anode to generate an ion current.
- the adsorbed ions are stored in the electric double layer of the specific ion selective electrode, correspondingly in the first current collector 521 and the first current collector.
- the first detection current of the control unit 521 to the specific ion detection sensor is generated between the two current collectors 522. The direction of the first detection current is opposite to the current direction of the charging current applied to the measuring device by the controller and decays rapidly.
- the control unit 521 is specifically configured to:
- the generated first detection current signal or second detection current signal is converted into a data format that meets the requirements of the central processing module (for example, including encryption, packaging, and physical conversion of the signal), and It is transmitted to the central processing module 51.
- the hardware components of the central processing module 51 include: a first processor, a first memory, a first transceiver, a first communication interface, and a first system bus; the first memory and the first communication interface pass through The first system bus is connected to the first processor and the first transceiver and completes mutual communication.
- the first memory is used to store computer programs
- the first communication interface is used to communicate with other devices
- the first processor and the first The transceiver is used to run a computer program to enable the central processing module 51 to perform the function of receiving the detection current signal generated by the sensing module and analyzing the detection current signal to detect the concentration information of a specific ion in the solution to be detected.
- the hardware components of the control unit 521 include: a second processor, a second memory, a second transceiver, a second communication interface, and a second system bus; the second memory and the second communication interface communicate with the second system bus through the second system bus.
- the processor and the second transceiver are connected and communicate with each other, the second memory is used to store computer programs, the second communication interface is used to communicate with other devices, and the second processor and the second transceiver are used to run computer programs,
- the control unit 521 executes the function of analyzing the detection current signal to detect the concentration information of the specific ion in the solution to be detected.
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Abstract
Description
Claims (51)
- 一种液态物质中离子浓度检测用的离子选择性电极,其特征在于,选自以下之任一:离子选择性电极一:包括导电基材、离子选择性膜,以及设于导电基材及离子选择性膜之间的碳基材料层;离子选择性电极二:包括相接触的导电基材和掺杂碳基材料的离子选择性膜。
- 如权利要求1所述的离子选择性电极,其特征在于,还包括如下技术特征中的至少一项:1)所述离子选择性电极一和离子选择性电极二中,所述导电基材为硬石墨片、柔性石墨纸、导电玻璃、金属钛铂、铜箔、铝箔或金箔;2)所述离子选择性电极一中,所述碳基材料层为碳基浆料涂覆在所述导电基材表面并干燥而形成;3)所述离子选择性电极一中,所述离子选择性膜用于从液态物质中选择性吸附待测离子;4)所述离子选择性电极一中,所述离子选择性膜为离子选择性混合物涂覆在所述碳基材料层并干燥而形成;5)所述离子选择性电极一中,碳基材料层的厚度为50~300微米;6)所述离子选择性电极一中,离子选择性膜的厚度为0.1~300微米;7)所述离子选择性电极二中,所述掺杂碳基材料的离子选择性膜为碳基浆料与离子选择性混合物混合后涂覆在所述导电基材表面并干燥而形成;8)所述离子选择性电极二中,所述掺杂碳基材料的离子选择性膜用于从液态物质中选择性吸附待测离子;9)所述离子选择性电极二中,掺杂碳基材料的离子选择性膜的厚度为1~300微米。
- 如权利要求2所述的离子选择性电极,其特征在于,特征4)和特征7)中,所述离子选择性混合物包括选择性吸附待测离子的离子载体。
- 如权利要求3所述的离子选择性电极,其特征在于,还包括如下技术特征中的至少一项:1)所述离子载体为阴离子载体或阳离子载体;2)所述离子载体占所述离子选择性混合物的重量百分比为0.2~10%;3)所述离子选择性混合物还包括选择基和粘结剂,还可选择的包括增塑剂、用于中性载体型离子电极的阴离子和有机溶剂中的至少一种。
- 如权利要求4所述的离子选择性电极,其特征在于,特征1)中,所述阴离子载体为氯离子载体、氟离子载体、硝酸根离子载体、亚硝酸根离子载体或硫酸根离子载体,所述阳离子载体为钙离子载体、钠离子载体、铵根离子载体或镁离子载体。
- 如权利要求4所述的离子选择性电极,其特征在于,特征2)中,离子选择性混合物除离子载体外还包括如下重量百分比的各组分:选择基 0.28~63.7%;粘结剂 0.9~33%;增塑剂 0~91.4%;用于中性载体型离子电极的阴离子 0~2.1%;有机溶剂 0~62.3%。
- 如权利要求6所述的离子选择性电极,其特征在于,还包括如下技术特征中的至少一 项:1)所述选择基为二戊二酸二(1-丁基戊基)癸烷-1,10-二酯;2)所述粘结剂为聚氯乙烯;3)所述增塑剂选自2-硝基苯辛醚、邻苯二甲酸双(2-乙基己基)酯、癸二酸二丁酯和癸二酸二异辛酯中的至少一种;4)所述用于中性载体型离子电极的阴离子为四(4-氯苯基)硼酸钾;5)所述有机溶剂选自N-甲基吡咯烷酮、四氢呋喃、N,N-二甲基甲酰胺、N,N-二甲基乙酰胺和二甲基乙酰胺中的至少一种。
- 如权利要求2所述的离子选择性电极,其特征在于,特征2)和特征7)中,所述碳基浆料包括碳基材料、导电炭黑、粘结剂和有机溶剂。
- 如权利要求8所述的离子选择性电极,其特征在于,还包括如下技术特征中的至少一项:1)所述碳基材料为活性炭、碳纳米管或石墨烯;2)所述粘结剂选自聚偏二氟乙烯和聚四氟乙烯中的至少一种;3)所述有机溶剂选自N-甲基吡咯烷酮、四氢呋喃、N,N-二甲基甲酰胺、N,N-二甲基乙酰胺和二甲基乙酰胺中的至少一种;4)所述碳基材料与导电炭黑的质量比为0.1:9.9~1:5,碳基材料和导电炭黑的总质量与粘结剂的质量比为8:2~99:1;5)所述有机溶剂与粘结剂的质量比为5:1~20:1。
- 如权利要求2所述的离子选择性电极,其特征在于,特征7)中,碳基浆料与离子选择性混合物的质量比为1~9:1。
- 如权利要求1至10任一项所述的离子选择性电极的制备方法,其特征在于,包括以下步骤:离子选择性电极一的制备方法:1)将所述碳基浆料涂覆在所述导电基材表面并干燥,形成所述碳基材料层;2)将离子选择性混合物涂覆在步骤1)得到的碳基材料层并干燥,形成离子选择性膜,即得到所述离子选择性电极;离子选择性电极二的制备方法:将所述碳基浆料与离子选择性混合物混合,然后涂覆在所述导电基材表面并干燥,形成离子选择性膜,即得到所述离子选择性电极。
- 如权利要求1至10任一项所述的离子选择性电极用于液态物质中待测离子浓度检测。
- 如权利要求12所述的用途,其特征在于,所述离子选择性电极用于离子检测传感器,所述离子检测传感器包括控制器、第一集电器(11)、第二集电器(12)及测量器(13),所述控制器与第一集电器(11)、第二集电器(12)连接,所述测量器(13)包括分离的如权利要求1至10任一项所述的离子选择性电极(131)以及对电极(132),所述对电极(132)与所述离子选择性电极(131)的极性相反,所述第一集电器(11)与所述离子选择性电极(131)电性连接,所述第二集电器(12)与所述对电极(132)电性连接。
- 如权利要求13所述的用途,其特征在于,所述离子选择性电极(131)与所述对电极(132)之间形成用于装载所述待检测溶液的液流通道。
- 一种用于液态物质种待测离子浓度检测的测量器,其特征在于,包括分离的如权利要 求1至10任一项所述的离子选择性电极(131)以及对电极(132),所述对电极(132)与所述离子选择性电极(131)的极性相反。
- 如权利要求15所述的测量器,其特征在于,所述离子选择性电极(131)与所述对电极(132)之间形成用于装载所述待检测溶液的液流通道。
- 如权利要求15或16所述的测量器用于液态物质中待测离子浓度检测。
- 一种特定离子的检测系统,其特征在于,包括:中央处理模块,用于发送针对所述特定离子的检测指令;传感模块,用于接收所述检测指令,并根据所述检测指令,生成由待检测溶液中特定离子形成的检测电流信号;其中,所述传感模块解析所述检测电流信号,以检测出待检测溶液中特定离子的浓度信息;或所述中央处理模块接收所述传感模块生成的检测电流信号,解析所述检测电流信号,以检测待检测溶液中特定离子的浓度信息。
- 根据权利要求18所述的特定离子的检测系统,其特征在于,所述传感模块包括:控制单元,用于接收所述检测指令,并根据所述检测指令,输出充电指令或放电指令;测量单元,用于当接收到所述充电指令时,待所述控制单元对所述测量单元开始充电,生成通过所述测量单元吸附的特定离子形成的第一检测电流信号;或用于当接收所述放电指令时,待所述测量单元开始放电,生成从所述测量单元上脱附的特定离子形成的第二检测电流信号。
- 根据权利要求19所述的特定离子的检测系统,其特征在于,所述测量单元包括:特定离子选择电极、以及对电极;所述对电极与所述特定离子选择电极的极性相反。
- 根据权利要求20所述的特定离子的检测系统,其特征在于,所述特定离子选择电极与所述对电极之间具有用于装载所述待检测溶液的液流通道;所述特定离子选择电极与待检测溶液接触的表面贴敷有一特定离子选择性薄膜;所述特定离子选择性薄膜用于在所述控制单元对所述测量单元充电时,从所述待检测溶液中吸附所述特定离子并排斥与该特定离子极性相反的其他离子;吸附在所述特定离子选择电极上特定离子的数量作为所述待检测溶液中特定离子的数量。
- 根据权利要求20所述的特定离子的检测系统,其特征在于,所述特定离子选择电极还包括:碳基材料层和导电基板;其中,所述特定离子选择性薄膜的另一面与所述碳基材料层的一面相贴合,及与所述碳基材料层的另一面与所述导电基板的一面相贴合。
- 根据权利要求19所述的特定离子的检测系统,其特征在于,待所述特定离子选择性薄膜吸附特定离子,所述特定离子选择电极与对极之间产生第一离子电流信号,所述第一检测电流信号与所述第一离子电流信号的幅值相同,方向相反;待所述特定离子选择性薄膜脱附特定离子,所述特定离子选择电极与对极之间产生第二离子电流信号,所述第二检测电流信号信号与所述第二离子电流信号的幅值相同,方向相反。
- 根据权利要求23所述的特定离子的检测系统,其特征在于,所述测量单元在生成所述第一检测电流信号或第二检测电流信号后,所述控制单元对所述第一检测电流信号和所述第二检测电流信号分别做时间的积分,以计算出所述特定离子检测传感器所吸附的特定离子的电量值;取所计算的电量值的绝对值,并根据输出充电指令和放电指令的循环次数,计算特定离子电量的平均值;根据特定离子电量的平均值,计算出所述特定离子在待检测溶液中的浓度信息。
- 根据权利要求24所述的特定离子的检测系统,其特征在于,所述控制单元还用于将特定离子在待检测溶液中的浓度信息转换成符合所述中央处理模块所要求的数据格式,并予以传输。
- 根据权利要求19所述的特定离子的检测系统,其特征在于,所述控制单元电性连接于设于所述测量单元中特定离子选择电极上的第一集电单元、以及设于所述测量单元中所述对电极上的第二集电单元,以形成所述控制单元与测量单元间的连接。
- 根据权利要求19所述的特定离子的检测系统,其特征在于,所述控制单元将所述测量单元生成的所述第一检测电流信号或第二检测电流信号转换为符合所述中央处理模块所要求的数据格式,并予以传输;待所述中央处理模块接收到所述第一检测电流信号或第二检测电流信号后,对所述第一检测电流信号和所述第二检测电流信号分别做时间的积分,以计算出所述特定离子检测传感器所吸附的特定离子的电量值;取所计算的电量值的绝对值,并根据输出充电指令和放电指令的循环次数,计算特定离子电量的平均值;根据特定离子电量的平均值,计算出所述特定离子在待检测溶液中的浓度信息。
- 根据权利要求27所述的特定离子的检测系统,其特征在于,所述控制单元还用于对所检测出的浓度信息进行后续处理;或所述中央处理模块还用于对所述传感模块传输的所述第一检测电流信号或第二检测电流信号进行预处理。
- 根据权利要求18所述的特定离子的检测系统,其特征在于,所述中央处理模块还用于以预设检测周期循环输出所述检测指令至所述测量模块。
- 一种特定离子检测传感器,其特征在于,所述特定离子检测传感器包括:控制单元,用于输出检测指令;测量单元,用于接收所述检测指令,并根据该检测指令,反馈待检测溶液中特定离子的数量;其中,所述测量单元包括:特定离子选择电极、以及对电极;所述对电极与所述特定离子选择电极的极性相反;所述特定离子选择电极与所述对电极之间具有用于装载所述待检测溶液的液流通道;所述特定离子选择电极与待检测溶液接触的表面贴敷有一特定离子选择性薄膜;所述特定离子选择性薄膜用于从所述待检测溶液中吸附所述特定离子并排斥与该特定离子极性相同的其他离子;吸附在所述特定离子选择电极上特定离子的数量作为所述待检测溶液中特定离子的数量。
- 根据权利要求30所述的特定离子检测传感器,其特征在于,所述控制单元电性连接于设于所述测量单元中特定离子选择电极上的第一集电单元、以及设于所述测量单元中所述对电极上的第二集电单元,以形成所述控制单元与测量单元间的连接。
- 根据权利要求30所述的特定离子检测传感器,其特征在于,所述特定离子选择电极还包括:碳基材料层和导电基板;其中,所述特定离子选择性薄膜的另一面与所述碳基材料层的一面相贴合,及与所述碳基材料层的另一面与所述导电基板的一面相贴合。
- 根据权利要求32所述的特定离子检测传感器,其特征在于,所述碳基材料层为碳基浆料形成的炭面;所述碳基浆料包括碳基材料、导电炭黑、聚偏氟乙烯、和有机溶剂;所述特定离子选择性薄膜为电解质选择吸附原料形成的贴层。
- 根据权利要求33所述的特定离子检测传感器,其特征在于,所述电解质选择吸附原料包括特定离子载体、硼酸钠、硝基苯辛醚、聚氯乙烯、及四氢呋喃溶剂;其中,所述特定离子载体的极性与所述特定离子的极性相反。
- 根据权利要求30所述的特定离子检测传感器,其特征在于,所述特定离子选择电极还包括与所述特定离子选择性薄膜相贴合的导电基板。
- 根据权利要求35所述的特定离子检测传感器,其特征在于,所述特定离子选择性薄膜为用于吸附特定离子的混合原料形成的贴层;所述混合原料包括活性炭浆料和物质选择吸附原料。
- 根据权利要求36所述的特定离子检测传感器,其特征在于,所述碳基材料层包括碳基浆料;所述碳基浆料包括碳基材料、导电炭黑、聚偏氟乙烯、和有机溶剂;所述碳基材料包括活性炭、碳纳米管或石墨烯;所述物质选择吸附原料包括特定离子载体、硼酸钠、硝基苯辛醚、聚氯乙烯、及四氢呋喃溶剂。
- 根据权利要求30所述的特定离子检测传感器,其特征在于,在所述特定离子选择电极内部按照预定比例设置吸附孔,所述吸附孔的类型包括微孔、中孔及大孔;其中,所述微孔的的直径小于20nm;所述中孔的直径大于或等于20nm,且小于或等于50nm;所述大孔的直径大于50nm。
- 一种特定离子检测传感器的制备方法,其特征在于,所述特定离子检测传感器包括特定离子选择电极,及与特定离子选择电极极性相反的对电极;所述特定离子检测传感器的制备方法包括:制备吸附原料;所述吸附原料包括用于吸附特定离子,且与所述特定离子极性相反的电解质载体;将所述吸附原料涂覆在导电基板上,以形成特定离子选择电极。
- 根据权利要求39所述的特定离子检测传感器的制备方法,其特征在于,所述制备吸附原料的步骤包括:制备碳基材料层;所述碳基材料层包括活碳基浆料;所述碳基浆料包括碳基材料、导电炭黑、聚偏氟乙烯、和有机溶剂;制备电解质选择吸附原料;所述电解质选择吸附原料包括特定离子载体、硼酸钠、硝基苯辛醚、聚氯乙烯、及四氢呋喃溶剂;所述将所述吸附原料涂覆在导电基板上,以形成特定离子选择电极的步骤包括:将已制备的所述碳基材料层涂覆在导电基板上,将所述电解质选择吸附原料形成特定离子选择性薄膜,将特定离子选择性薄膜涂覆在所述碳基材料层上,导电基板、碳基材料层、特定离子选择性薄膜形成特定离子选择电极;其中,所述制备活性炭面的步骤包括:将聚偏氟乙烯溶解于所述有机溶剂中,形成混合液;将碳基材料和导电炭黑加入到所述混合液中,通过搅拌设备进行搅拌,以形成活性炭浆料;将所述碳基浆料均匀涂覆在所述导电基板上,并进行烘干,形成所述碳基材料层;所述制备电解质选择吸附原料的步骤包括:将特定离子载体、硼酸钠、硝基苯辛醚、聚氯乙烯溶解于四氢呋喃溶剂中;或者,所述制备吸附原料的步骤包括:制备混合有所述碳基浆料和所述电解质选择吸附原料的吸附原料;将混合的吸附原料形成特定离子选择性薄膜;所述将所述吸附原料涂覆在导电基板上,以形成特定离子选择电极的步骤包括:将混合的吸附原料形成的特定离子选择性薄膜涂覆在导电基板上,以形成特定离子选择电极。
- 一种特定离子检测方法,其特征在于,应用于控制特定离子检测传感器的控制器,所述特定离子检测传感器用于吸附特定离子;所述特定离子检测方法包括:输出针对所述控制器的充电指令;待所述控制器对所述特定离子检测传感器开始充电,采集所述控制器对所述特定离子检测传感器的第一检测电流;输出针对所述控制器的放电指令;待所述特定离子检测传感器开始放电,采集所述控制器对所述特定离子检测传感器的 第二检测电流;根据所述第一检测电流和所述第二检测电流,分析所述特定离子检测传感器所吸附的特定离子的浓度信息。
- 根据权利要求41所述的特定离子检测方法,其特征在于,所述特定离子检测传感器包括:特定离子选择电极、以及对电极;所述对电极与所述特定离子选择电极的极性相反;所述特定离子选择电极与所述对电极之间具有用于装载所述待检测溶液的液流通道;所述特定离子选择电极与待检测溶液接触的表面与贴敷有一特定离子选择性薄膜的一面相贴敷;所述特定离子选择性薄膜用于从所述待检测溶液中吸附所述特定离子并排斥与该特定离子极性相同的其他离子;吸附在所述特定离子选择电极上特定离子的数量作为所述待检测溶液中特定离子的数量。
- 根据权利要求41所述的特定离子检测方法,其特征在于,所述充电指令和放电指令是以预设周期循环,且间隔地输出至所述控制器。
- 根据权利要求43所述的特定离子检测方法,其特征在于,所述根据所述第一检测电流和所述第二检测电流,分析所述特定离子检测传感器所吸附的特定离子的浓度信息的步骤包括:对所述第一检测电流和所述第二检测电流分别做时间的积分,以计算出所述特定离子检测传感器所吸附的特定离子的电量值;取所计算的电量值的绝对值,并根据输出充电指令和放电指令的循环次数,计算特定离子电量的平均值;根据特定离子电量的平均值,计算出所述特定离子在待检测溶液中的浓度信息。
- 根据权利要求44所述的特定离子检测方法,其特征在于,所述第一检测电流的幅值与所述特定离子检测传感器在充电过程中产生的离子电流的幅值相等;所述第二检测电流与所述特定离子检测器在放电过程中产生的离子电流的幅值相等。
- 根据权利要求44所述的特定离子检测方法,其特征在于,在获取到所述特定离子在待检测溶液中的浓度信息之后,所述特定离子检测方法还包括:根据所述特定离子电量的平均值与待检测溶液中的浓度信息,绘制特定离子浓度信息与特定离子电量对应的曲线图。
- 一种特定离子检测系统,其特征在于,应用于控制特定离子检测传感器的控制器,所述特定离子检测传感器用于吸附特定离子;所述特定离子检测系统包括:指令输出模块,用于输出针对所述控制器的充电指令或放电指令;采集模块,用于待所述控制器对所述特定离子检测传感器开始充电,采集所述控制器对所述特定离子检测传感器的第一检测电流,和待所述特定离子检测传感器开始放电,采集所述控制器对所述特定离子检测传感器的第二检测电流;处理模块,用于根据所述第一检测电流和所述第二检测电流,分析所述特定离子检测 传感器所吸附的特定离子的浓度信息。
- 根据权利要求47所述的特定离子检测系统,其特征在于,所述指令输出模块以预设周期循环,且间隔地输出所述充电指令和放电指令至所述控制器。
- 根据权利要求48所述的特定离子检测系统,其特征在于,所述处理模块包括:第一计算单元,用于对所述所述第一检测电流和所述第二检测电流做时间的积分,以计算出所述特定离子检测传感器所吸附的特定离子的电量值;第二计算单元,用于取所计算的电量值的绝对值,并根据输出充电指令和放电指令的循环次数,计算特定离子电量的平均值;第三计算单元,用于根据特定离子电量的平均值,计算出所述特定离子在待检测溶液中的浓度信息。
- 一种计算机可读存储介质,其上存储有计算机程序,其特征在于,该程序被处理器执行时实现权利要求41至46中任一项所述特定离子检测方法。
- 一种设备,其特征在于,包括:处理器及存储器;所述存储器用于存储计算机程序,所述处理器用于执行所述存储器存储的计算机程序,以使所述设备执行如权利要求41至46中任一项所述特定离子检测方法。
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