WO2023007799A1 - Électrode ionique, dispositif de mesure de qualité de l'eau, partie de membrane et procédé de fabrication d'une électrode ionique - Google Patents

Électrode ionique, dispositif de mesure de qualité de l'eau, partie de membrane et procédé de fabrication d'une électrode ionique Download PDF

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Publication number
WO2023007799A1
WO2023007799A1 PCT/JP2022/008826 JP2022008826W WO2023007799A1 WO 2023007799 A1 WO2023007799 A1 WO 2023007799A1 JP 2022008826 W JP2022008826 W JP 2022008826W WO 2023007799 A1 WO2023007799 A1 WO 2023007799A1
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WIPO (PCT)
Prior art keywords
permeable membrane
membrane
cylindrical body
main body
ion electrode
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.)
Ceased
Application number
PCT/JP2022/008826
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English (en)
Japanese (ja)
Inventor
樹興 室賀
唯二 辻岡
悠吾 西谷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Horiba Advanced Techno Co Ltd
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Horiba Advanced Techno Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Horiba Advanced Techno Co Ltd filed Critical Horiba Advanced Techno Co Ltd
Priority to JP2023538234A priority Critical patent/JP7811215B2/ja
Priority to KR1020247000649A priority patent/KR20240035993A/ko
Priority to CN202280049185.8A priority patent/CN117693678A/zh
Publication of WO2023007799A1 publication Critical patent/WO2023007799A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
    • G01N27/28—Electrolytic cell components
    • G01N27/30—Electrodes, e.g. test electrodes; Half-cells
    • G01N27/333—Ion-selective electrodes or membranes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
    • G01N27/416—Systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/18—Water

Definitions

  • This application relates to an ion electrode, a water quality measuring device, a membrane component, and a method for manufacturing an ion electrode.
  • an ion electrode in order to detect specific ions in a target liquid, is composed of a permeable membrane that allows ions to pass through, a main body to which the permeable membrane is attached, and a main body that is inserted into the main body.
  • a cylindrical membrane fixture that fixes the permeable membrane by sandwiching the membrane is provided (for example, Patent Document 1).
  • an object is to provide an ion electrode, a water quality measuring device, a membrane component, and a method for manufacturing an ion electrode, in which the permeable membrane can be easily attached to the main body so as to apply tension to the permeable membrane.
  • the ion electrode is an ion electrode that detects specific ions in a target liquid, and includes a membrane component having a permeable membrane that allows the ions to pass through, and a main body to which the membrane component is detachably attached.
  • the component further includes an inner cylindrical body having an opening at its tip end, and an outer cylindrical body in which the inner cylindrical body is disposed, the permeable membrane being disposed to cover the opening and the inner cylindrical body. It is fixed to the inner cylindrical body and the outer cylindrical body by being sandwiched between the cylindrical body and the outer cylindrical body, and the main body has a pushing portion that is disposed inside the inner cylindrical body and pushes the permeable membrane. Prepare.
  • the water quality measuring device includes the ion electrode.
  • the membrane component is used for the ion electrode.
  • the ion electrode manufacturing method is the ion electrode manufacturing method described above, and includes attaching the membrane component to the main body so that the pressing portion presses the permeable membrane.
  • FIG. 1 is an overall view of a water quality measuring device according to one embodiment.
  • FIG. 2 is a cross-sectional view of a main part taken along line II--II in FIG.
  • FIG. 3 is an exploded view of FIG. 2; 4 is an enlarged view of a main part of FIG. 2.
  • FIG. 5 is an exploded view of FIG.
  • FIG. 6 is an enlarged view of the VI area in FIG.
  • FIG. 7 is an enlarged view of area VII in FIG.
  • FIG. 8 is a cross-sectional view of an ion electrode according to another embodiment.
  • FIGS. 8 An embodiment of a water quality measuring device, an ion electrode, a membrane component, and a method for manufacturing an ion electrode will be described below with reference to FIGS. Note that in each figure (similar to FIG. 8), the dimensional ratio of the drawings and the actual dimensional ratios do not necessarily match, and the dimensional ratios between the drawings do not necessarily match.
  • a water quality measuring device 1 includes a detection unit 2 that detects the water quality of a target liquid to be measured, a device main body 3 that can communicate with the detection unit 2, and a detection unit 2 and the device main body. 3 may be provided.
  • the device body 3 may include, for example, an input unit 3a to which information is input, a processing unit 3b to process information, and an output unit 3c to output information, as in the present embodiment.
  • the communication means 4 may be, for example, wired communication means (for example, cable) as in the present embodiment, or may be, for example, wireless communication means. Note that the detection unit 2 and the apparatus main body 3 may be configured integrally.
  • the input unit 3a is not particularly limited, but can be, for example, a button, a touch panel, or the like. Then, for example, information of an instruction to start measurement may be input to the input unit 3a.
  • the processing unit 3b may include, for example, processors such as CPU and MPU, memories such as ROM and RAM, and various interfaces. Specifically, the processing unit 3b includes, for example, an acquisition unit that acquires information from the detection unit 2 and the input unit 3a, a storage unit that stores the information, and a calculation unit that calculates the information (for example, the water quality value). , and a control unit that controls each unit of the water quality measuring device 1 (for example, the output unit 3c).
  • the output unit 3c is not particularly limited, it can be, for example, a display device or the like.
  • the output unit 3c may be, for example, transmission means for outputting (transmitting) a signal to the outside of the water quality measuring device 1.
  • the output unit 3c may output the measurement result (for example, water quality value) or the like.
  • the detection section 2 includes ion electrodes 5, 6, and 7 for detecting ions in the target liquid.
  • the detection unit 2 includes at least an ion electrode 5 that detects first ions (eg, ion concentration) in the target liquid.
  • the detection unit 2 may include, for example, other ion electrodes 6 and 7 that detect ions different from the first ions, and may also include, for example, water quality items other than ions (for example, dissolved oxygen, pH , conductivity, turbidity, temperature, etc.).
  • the detection unit 2 includes first to third ion electrodes 5, 6, and 7 for respectively measuring the potentials of the first to third ions in the subject liquid. and a reference electrode 8 for measuring a reference potential.
  • Ions detected by the ion electrodes 5, 6, and 7 are not particularly limited, but can be, for example, ammonium ions, nitrate ions, potassium ions, chloride ions, calcium ions, sodium ions, and the like.
  • the detection unit 2 is detachable from the detection unit main body 9 housing the ion electrodes 5, 6, 7 and the reference electrode 8 and the detection unit main body 9 as in the present embodiment. , 7 and a holding portion 10 for holding the reference electrode 8 .
  • the ion electrodes 5, 6, 7 and a part of the reference electrode 8 may be configured to be exposed from the tip portion of the detection portion 2 (in this embodiment, the opening of the holding portion 10). .
  • ions in the target liquid can be detected by immersing the tip of the detection unit 2, that is, the exposed portions of the ion electrodes 5, 6, 7 and the reference electrode 8 in the target liquid.
  • the target liquid is not particularly limited. Detects ions in liquids such as factory effluent, chemical product factory effluent, food factory effluent, water intake from rivers and reservoirs, well water and groundwater, fish cages and effluent from fish farms, liquid fertilizers from plant factories and their effluent, etc.
  • the detection unit 2 may detect ions in a test solution held by the measurer and placed in a container.
  • the ion electrodes 5 and 6 include a membrane component 12 having a permeable membrane 11 that allows ions to pass through, and a main body 13 to which the membrane component 12 is detachably attached.
  • the ion electrodes 5 and 6 include, for example, a response membrane 14 fixed to the tip of the main body 13, an internal electrode 15 arranged inside the main body 13, and an internal electrode 15 sealed inside the main body 13. It may be provided with an internal liquid 16 to be immersed.
  • the membrane component 12 includes an inner cylindrical body 17 having an opening 17a at its tip, and an outer cylindrical body 18 in which the inner cylindrical body 17 is arranged.
  • the permeable membrane 11 is arranged so as to cover the opening 17 a of the inner cylindrical body 17 .
  • the permeable membrane 11 is fixed to the inner cylinder 17 and the outer cylinder 18 by being sandwiched between the inner cylinder 17 and the outer cylinder 18 .
  • the tip surface of the inner cylinder 17 and the tip surface of the outer cylinder 18 may be arranged so as to be flush with each other.
  • the inner cylindrical body 17 includes, for example, a cylindrical main body portion 17b formed in a cylindrical shape and arranged inside the outer cylindrical body 18, and an outer peripheral portion of the cylindrical main body portion 17b extending outward.
  • a protruding portion 17c may be provided.
  • the permeable membrane 11 is disposed outside the cover portion 11a covering the opening 17a of the inner cylindrical body 17 and the outer side of the cover portion 11a as in the present embodiment.
  • a configuration in which a second sandwiched portion 11c sandwiched by the portion 18a is provided is preferable.
  • the permeable membrane 11 is not only sandwiched between the outer peripheral portion of the tube main body portion 17b of the inner tubular body 17 and the inner peripheral portion of the outer tubular body 18, but also between the projecting portion 17c of the inner tubular body 17 and the outer tubular body. It is also sandwiched by the base end portion 18a of the body 18. As shown in FIG. Therefore, for example, the permeable membrane 11 can be reliably fixed to the inner cylinder 17 and the outer cylinder 18 .
  • the materials forming the inner cylinder 17 and the outer cylinder 18 are not particularly limited.
  • the inner cylindrical body 17 may be made of, for example, metal or hard resin
  • the outer cylindrical body 18 may be made of, for example, metal, hard resin, or elastic resin.
  • the materials forming the inner cylindrical body 17 and the outer cylindrical body 18 may be the same or different.
  • the membrane component 12 may include a sealing body (for example, an O-ring or packing) for sealing between the inner cylinder 17 and the outer cylinder 18 .
  • the permeable membrane 11 may have the function of protecting the responsive membrane 14, for example.
  • the permeable membrane 11 may be configured to allow ions in the target liquid to pass through but not allow suspended matter and microorganisms in the target liquid to pass through.
  • the permeable membrane 11 may be, for example, a membrane made of fluorine-based resin.
  • the permeable film 11 may be a film made of other material than the fluororesin.
  • the permeable membrane 11 may be a membrane formed of a resin, silicon, or the like that does not easily absorb the plasticizer contained in the responsive membrane 14 and has a predetermined ductility. It is also possible to use a film formed by, for example.
  • the permeable membrane 11 may be made of, for example, a metal mesh. If air bubbles remaining between metal meshes pose a problem, the permeable membrane 11 is preferably made of a fluororesin, silicon, polyethylene, polypropylene, or the like. Moreover, the pore size of the permeable membrane 11 is preferably as small as possible, and is not particularly limited, but is preferably 0.5 ⁇ m or less, for example.
  • the main body 13 includes a cylindrical base portion 13a that accommodates the internal electrode 15 and the internal liquid 16 therein, and a protruding portion 13b that protrudes from the outer peripheral portion of the base portion 13a. good too.
  • the material forming the main body 13 is not particularly limited, and the main body 13 may be made of, for example, metal or hard resin. Further, the main body 13 may have an opening 13c and an annular groove 13d arranged outside the opening 13c at the tip, as in the present embodiment.
  • the responsive membrane 14 may be fixed to the tip of the main body 13 so as to cover the opening 13c of the main body 13 in order to enclose the internal liquid 16 inside the main body 13 .
  • the response membrane 14 electrically insulates the subject liquid from the internal electrode 15 , and arranges the internal liquid 16 between the response membrane 14 and the internal electrode 15 .
  • the central portion of the response membrane 14 may close the opening 13c of the main body 13 and the outer peripheral portion of the response membrane 14 may close the groove 13d of the main body 13, as in the present embodiment.
  • the outer surface of the responsive membrane 14 may be convex toward the tip side.
  • the internal electrode 15 and the internal liquid 16 are not particularly limited.
  • the internal liquid 16 contains, for example, ammonium chloride
  • the internal electrode 15 uses, for example, an Ag/AgCl electrode
  • the response membrane 14 uses, for example, selectively ammonium chloride. It may be a membrane that responds to ions and has the properties of a semipermeable membrane.
  • the response membrane 14 may be formed by bonding a membrane member to the main body 13 via an adhesive.
  • the responsive membrane 14 may be formed by applying an adhesive to the groove 13d of the main body 13 and by dissolving and bonding the main body 13 and the membrane member with the adhesive. It should be noted that, for example, the thickness of the peripheral portion of the film member may become thinner than the thickness of the central portion of the film member by dissolving the film member having a uniform thickness into the adhesive.
  • the membrane member includes, for example, a substrate formed of vinyl chloride or the like, an ionophore contained in the substrate that selectively reacts only with specific ions (e.g., ammonium ions, potassium ions), and an ionophore contained in the substrate,
  • specific ions e.g., ammonium ions, potassium ions
  • a plasticizer for softening vinyl chloride or the like may also be included.
  • the responsive membrane 14 may include, for example, a substrate made of vinyl chloride or the like, and an ionophore contained in the substrate and selectively reacting only with specific ions.
  • the ion electrode 5 also has an attachment mechanism 19 for detachably attaching the membrane component 12 to the main body 13 .
  • the membrane component 12 is attached to the main body 13 so that the state shown in FIG. 5 changes to the state shown in FIG. 4, or the membrane component 12 moves from the state shown in FIG. can be removed from the main body 13.
  • the ion electrode 5 includes a sealing body (for example, an O-ring or packing) to seal between the membrane component 12 (specifically, the inner cylindrical body 17) and the main body 13. may be provided.
  • the configuration of the mounting mechanism 19 is not particularly limited.
  • the inner cylindrical body 17 of the membrane component 12 has an internal thread 19a on its inner periphery
  • the base portion 13a of the main body 13 has an outer periphery on which the internal thread 19a is screwed.
  • a male screw 19b may be provided, and the mounting mechanism 19 may be a screw mechanism including the female screw 19a and the male screw 19b.
  • the attachment mechanism 19 protrudes from one of the membrane component 12 (for example, the inner cylindrical body 17) and the main body 13, and the other is protruded so as to prevent the membrane component 12 from moving with respect to the main body 13.
  • a configuration in which a stop portion for stopping is provided may be used.
  • the other may comprise a recess (eg, a groove) into which the stop is placed to stop the stop.
  • the main body 13 has a pressing portion 13e that presses the permeable membrane 11.
  • the pressing portion 13e is arranged at the tip of the base portion 13a as in the present embodiment, and is arranged inside the inner cylindrical body 17 when the membrane component 12 is attached to the main body 13. It may be configured to protrude from the cylindrical body 17 toward the distal end side.
  • the permeable membrane 11 can be easily attached to the main body 13 so that tension is applied to the permeable membrane 11 .
  • the ion electrode 5 in which tension is applied to the permeable membrane 11 can be easily manufactured.
  • the direction in which the pressing part 13 e pushes the permeable membrane 11 is the direction in which the main body 13 moves relative to the membrane component 12 when the membrane component 12 is attached to the main body 13 .
  • the pushing part 13e may push the permeable membrane 11 via another member (in this embodiment, the response membrane 14), or may push the permeable membrane 11 directly, for example.
  • the permeable membrane 11 includes not only the first pinched portion 11b but also the second pinched portion 11c. It is sandwiched between outer cylindrical bodies 18 . As a result, it is possible to prevent the permeable membrane 11 from being displaced with respect to the inner cylinder 17 and the outer cylinder 18, so that it is possible to apply a desired tension to the permeable membrane 11, for example.
  • the first sandwiched portion 11b is sandwiched between the inner cylindrical body 17 and the outer cylindrical body 18 in a direction perpendicular to the direction in which the pressing portion 13e presses the permeable membrane 11. As shown in FIG. That is, in the cross section (see FIG. 4) along the direction in which the pushing portion 13e pushes the permeable membrane 11, the first sandwiched portion 11b extends in a direction parallel to the direction in which the pushing portion 13e pushes the permeable membrane 11. ing.
  • the second sandwiched portion 11c is sandwiched between the inner cylindrical body 17 and the outer cylindrical body 18 in a direction parallel to the direction in which the pressing portion 13e presses the permeable membrane 11 . That is, in the cross section (see FIG. 4) along the direction in which the pushing portion 13e pushes the permeable membrane 11, the second pinched portion 11c is arranged to extend in the direction perpendicular to the direction in which the pushing portion 13e pushes the permeable membrane 11. ing.
  • the permeable membrane 11 can be given a desired tension by attaching the membrane component 12 to the main body 13 so that the membrane component 12 contacts the projecting portion 13b of the main body 13. can. Thereby, for example, positioning of the membrane component 12 can be easily performed.
  • the pushing part 13 e pushes the permeable membrane 11 , the tip of the pushing part 13 e comes into contact with the permeable membrane 11 . Therefore, it is preferable that the pressing portion 13e has a chamfered portion 13f on the outer peripheral edge of the tip. As a result, since the permeable membrane 11 is in contact with the chamfered portion 13f of the pressing portion 13e, it is possible to suppress the permeable membrane 11 from being damaged.
  • the inner cylindrical body 17 preferably has a chamfered portion 17d on the outer peripheral edge of the distal end.
  • a configuration in which the inner peripheral edge is provided with a chamfered portion 18b is preferable.
  • the outer peripheral surface of the cylinder body portion 17b of the inner tubular body 17 is formed with a smooth surface without unevenness
  • the inner peripheral surface of the outer tubular body 18 is formed with unevenness. It may be configured such that it is formed with a smooth surface without any .
  • the “smooth surface” means that the permeable membrane 11 is interposed between the inner cylindrical body 17 and the outer cylindrical body 18 so that the outer cylindrical body 18 can be slid on the inner cylindrical body 17 in the axial direction. refers to the face.
  • the inner cylindrical body 17 and the outer cylindrical body 18 can be separated.
  • the permeable membrane 11 can be fixed to.
  • the permeable membrane 11 is in contact with the chamfered portions 17d and 18b, so that the permeable membrane 11 can be prevented from being damaged.
  • the ion electrode 5 is an ion electrode 5 that detects specific ions in a target liquid, and includes a membrane component 12 having a permeable membrane 11 that allows the ions to pass therethrough, and the membrane component
  • the membrane component 12 includes a main body 13 to which the membrane component 12 is removably attached, and the membrane component 12 includes an inner cylindrical body 17 having an opening 17a at the tip and an outer cylindrical body 18 in which the inner cylindrical body 17 is arranged.
  • the permeable membrane 11 is disposed so as to cover the opening 17a, and is sandwiched between the inner cylindrical body 17 and the outer cylindrical body 18, thereby separating the inner cylindrical body 17 and the outer cylindrical body 18 from each other.
  • the main body 13 preferably has a pressing portion 13 e arranged inside the inner cylindrical body 17 to press the permeable membrane 11 .
  • the permeable membrane 11 is fixed to the inner cylinder 17 and the outer cylinder 18 by being sandwiched between the inner cylinder 17 and the outer cylinder 18 .
  • the pressing portion 13 e presses the permeable membrane 11 , so tension is applied to the permeable membrane 11 .
  • This facilitates attaching the permeable membrane 11 to the main body 13 so as to apply tension to the permeable membrane 11 .
  • the inner cylindrical body 17 includes a cylindrical body portion 17b formed in a cylindrical shape and a projecting portion projecting outward from the outer peripheral portion of the cylindrical body portion 17b. 17c, wherein the permeable membrane 11 is sandwiched between the outer peripheral portion of the tubular body portion 17b and the inner peripheral portion of the outer tubular body 18, and the protruding portion 17c and the proximal end of the outer tubular body 18.
  • a preferred configuration is that it is sandwiched by the portion 18a.
  • the permeable membrane 11 is not only sandwiched between the outer peripheral portion of the main tube portion 17b and the inner peripheral portion of the outer cylindrical body 18, but also between the projecting portion 17c and the base end portion 18a of the outer cylindrical body 18. is also sandwiched by Accordingly, when the membrane component 12 is attached to the main body 13, the permeable membrane 11 is prevented from being displaced with respect to the inner cylindrical body 17 and the outer cylindrical body 18 when the pressing portion 13e presses the permeable membrane 11. be able to.
  • the outer cylindrical body 18 has a chamfered portion 18b on the inner peripheral edge of the base end.
  • the permeable membrane 11 when the permeable membrane 11 is fixed between the inner cylinder 17 and the outer cylinder 18, or when the permeable membrane 11 is fixed between the inner cylinder 17 and the outer cylinder 18, At times, the permeable membrane 11 contacts the chamfered portion 18 b of the outer cylinder 18 . Thereby, it is possible to suppress the permeable membrane 11 from being damaged.
  • the inner cylindrical body 17 has a chamfered portion 17d on the outer peripheral edge of the tip.
  • the pushing portion 13e has a chamfered portion 13f on the outer peripheral edge of the tip.
  • the permeable membrane 11 to which tension is applied contacts the chamfered portion 13f of the pressing portion 13e. Therefore, it is possible to suppress the permeable membrane 11 from being damaged.
  • the water quality measuring device 1, the ion electrode 5, and the membrane component 12 are not limited to the configurations of the above-described embodiments, nor are they limited to the above-described effects. Moreover, the water quality measuring device 1, the ion electrode 5, and the membrane component 12 can of course be modified in various ways without departing from the gist of the present invention. For example, it is of course possible to arbitrarily select one or a plurality of configurations, methods, etc., according to various modified examples described below and employ them in the configurations, methods, etc., according to the above-described embodiment.
  • the attachment mechanism 19 is a screw mechanism including the female screw 19 a of the membrane component 12 and the male screw 19 b of the main body 13 .
  • the ion electrode 5 is not limited to such a configuration.
  • the attachment mechanism 19 may be configured such that the membrane component 12 and the main body 13 are separate members.
  • the internal electrode 15 and the internal liquid 16 are arranged inside the main body 13 .
  • the ion electrode 5 is not limited to such a configuration.
  • the internal electrode 15 and the internal liquid 16 may be arranged outside the main body 13 .
  • the main body 13 (specifically, the base portion 13a), the inner cylindrical body 17 (specifically, the cylindrical main body portion 17b), and the outer cylindrical body 18 are , are formed in a cylindrical shape.
  • the ion electrode 5 is not limited to such a configuration.
  • the main body 13 specifically, the base portion 13a
  • the inner tubular body 17 specifically, the tubular main body portion 17b
  • the outer tubular body 18 may each be formed in a square tubular shape. good.
  • the permeable membrane 11 has not only the first pinched portion 11b but also the second pinched portion 11c.
  • the membrane component 12 is not limited to such a configuration.
  • the transmissive film 11 may have the first sandwiched portion 11b and not the second sandwiched portion 11c.
  • the outer peripheral surface of the cylinder main body portion 17b of the inner tubular body 17 is formed to be a smooth surface without irregularities, and the inner peripheral surface of the outer tubular body 18 is , is formed on a smooth surface without irregularities.
  • the membrane component 12 is not limited to such a configuration.
  • the cylinder body portion 17b of the inner cylinder 17 may have a male thread on its outer circumference, and the outer cylinder 18 may have a female screw on its inner circumference to engage with the male screw.
  • the first pinched portion 11b is perpendicular to the direction in which the pushing portion 13e pushes the permeable membrane 11, and the inner cylindrical body 17 and the outer cylindrical body 18 are separated from each other. It is a configuration that is sandwiched between However, the membrane component 12 is not limited to such a configuration.
  • the first sandwiched portion 11b is sandwiched between the inner cylindrical body 17 and the outer cylindrical body 18 in an inclined direction with respect to the direction in which the pushing portion 13e pushes the permeable membrane 11.
  • the configuration may be such that there is That is, in the cross section (see FIG. 8) along the direction in which the pressing portion 13e presses the permeable membrane 11, the first sandwiched portion 11b extends in a direction oblique to the direction in which the pressing portion 13e presses the permeable membrane 11.
  • the configuration may be such that
  • the second pinched portion 11c is parallel to the direction in which the pushing portion 13e pushes the permeable membrane 11, and the inner cylindrical body 17 and the outer cylindrical body 18 are separated from each other. It is a configuration that is sandwiched between However, the membrane component 12 is not limited to such a configuration.
  • the second sandwiched portion 11c is sandwiched between the inner cylindrical body 17 and the outer cylindrical body 18 in an inclined direction with respect to the direction in which the pushing portion 13e pushes the permeable membrane 11.
  • the configuration may be such that there is That is, in a cross section (see FIG. 8) along the direction in which the pushing portion 13e pushes the permeable membrane 11, the second pinched portion 11c is arranged so as to extend in a direction oblique to the direction in which the pushing portion 13e pushes the permeable membrane 11.
  • the configuration may be such that

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Abstract

L'invention concerne une électrode ionique qui détecte des ions précis dans une solution cible, l'électrode ionique comprenant : une partie de membrane qui comporte une membrane perméable traversée par des ions ; et un corps auquel la partie de membrane est fixée de manière détachable. La partie membrane comprend en outre un cylindre interne qui présente une ouverture à son extrémité distale et un cylindre externe à l'intérieur duquel est disposé le cylindre interne. La membrane perméable est disposée de manière à couvrir l'ouverture et est fixée au cylindre interne et au cylindre externe en étant intercalée entre ceux-ci. Le corps comprend une partie de poussée qui est disposée à l'intérieur du cylindre interne pour pousser la membrane perméable.
PCT/JP2022/008826 2021-07-28 2022-03-02 Électrode ionique, dispositif de mesure de qualité de l'eau, partie de membrane et procédé de fabrication d'une électrode ionique Ceased WO2023007799A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2023538234A JP7811215B2 (ja) 2021-07-28 2022-03-02 イオン電極、水質測定装置、膜部品、及びイオン電極の製造方法
KR1020247000649A KR20240035993A (ko) 2021-07-28 2022-03-02 이온 전극, 수질 측정 장치, 막 부품 및 이온 전극의 제조 방법
CN202280049185.8A CN117693678A (zh) 2021-07-28 2022-03-02 离子电极、水质测定装置、膜部件及离子电极的制造方法

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JP2021123038 2021-07-28
JP2021-123038 2021-07-28

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WO2023007799A1 true WO2023007799A1 (fr) 2023-02-02

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JP2006234508A (ja) * 2005-02-23 2006-09-07 Dkk Toa Corp 隔膜部材及び隔膜式電極
JP2014041109A (ja) * 2012-07-23 2014-03-06 Horiba Ltd 液体分析計
JP2016053484A (ja) * 2014-09-02 2016-04-14 株式会社堀場製作所 液体分析計及び液体分析システム

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JPH0751126B2 (ja) * 1986-12-05 1995-06-05 住友電気工業株式会社 経皮血中ガスセンサ
JPH04299248A (ja) * 1991-03-28 1992-10-22 Nakano Vinegar Co Ltd 亜硫酸検出装置のセンサ
JP2006192032A (ja) * 2005-01-12 2006-07-27 Sumitomo Denko Hightecs Kk 経皮血中ガスセンサ
JP2006234508A (ja) * 2005-02-23 2006-09-07 Dkk Toa Corp 隔膜部材及び隔膜式電極
JP2014041109A (ja) * 2012-07-23 2014-03-06 Horiba Ltd 液体分析計
JP2016053484A (ja) * 2014-09-02 2016-04-14 株式会社堀場製作所 液体分析計及び液体分析システム

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