JP2015224904A - イオンセンサ - Google Patents
イオンセンサ Download PDFInfo
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- JP2015224904A JP2015224904A JP2014108571A JP2014108571A JP2015224904A JP 2015224904 A JP2015224904 A JP 2015224904A JP 2014108571 A JP2014108571 A JP 2014108571A JP 2014108571 A JP2014108571 A JP 2014108571A JP 2015224904 A JP2015224904 A JP 2015224904A
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- ion
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- sensor
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- 150000002500 ions Chemical class 0.000 claims abstract description 115
- 229910021607 Silver chloride Inorganic materials 0.000 claims abstract description 45
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 claims abstract description 45
- 238000005259 measurement Methods 0.000 claims abstract description 31
- 239000000758 substrate Substances 0.000 claims abstract description 13
- 239000000243 solution Substances 0.000 abstract description 28
- 239000012086 standard solution Substances 0.000 abstract description 7
- 239000007788 liquid Substances 0.000 abstract description 6
- 238000012937 correction Methods 0.000 abstract description 2
- 239000012528 membrane Substances 0.000 description 23
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 16
- 239000007864 aqueous solution Substances 0.000 description 16
- 239000010408 film Substances 0.000 description 11
- 239000011780 sodium chloride Substances 0.000 description 8
- 239000003792 electrolyte Substances 0.000 description 5
- 238000002847 impedance measurement Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910001414 potassium ion Inorganic materials 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 229910001415 sodium ion Inorganic materials 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- SAOKZLXYCUGLFA-UHFFFAOYSA-N bis(2-ethylhexyl) adipate Chemical compound CCCCC(CC)COC(=O)CCCCC(=O)OCC(CC)CCCC SAOKZLXYCUGLFA-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000008151 electrolyte solution Substances 0.000 description 2
- 230000005669 field effect Effects 0.000 description 2
- 239000002555 ionophore Substances 0.000 description 2
- 230000000236 ionophoric effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004014 plasticizer Substances 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 238000006479 redox reaction Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 1
- -1 Tetraphenylborate Chemical compound 0.000 description 1
- 108010067973 Valinomycin Proteins 0.000 description 1
- 238000007743 anodising Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- FCFNRCROJUBPLU-UHFFFAOYSA-N compound M126 Natural products CC(C)C1NC(=O)C(C)OC(=O)C(C(C)C)NC(=O)C(C(C)C)OC(=O)C(C(C)C)NC(=O)C(C)OC(=O)C(C(C)C)NC(=O)C(C(C)C)OC(=O)C(C(C)C)NC(=O)C(C)OC(=O)C(C(C)C)NC(=O)C(C(C)C)OC1=O FCFNRCROJUBPLU-UHFFFAOYSA-N 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- GKRBLFCTFPAHMH-UHFFFAOYSA-N n,n-dicyclohexyl-2-[2-[2-(dicyclohexylamino)-2-oxoethoxy]phenoxy]acetamide Chemical compound C1CCCCC1N(C1CCCCC1)C(=O)COC1=CC=CC=C1OCC(=O)N(C1CCCCC1)C1CCCCC1 GKRBLFCTFPAHMH-UHFFFAOYSA-N 0.000 description 1
- 230000001537 neural effect Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000012488 sample solution Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000002562 urinalysis Methods 0.000 description 1
- 230000002485 urinary effect Effects 0.000 description 1
- FCFNRCROJUBPLU-DNDCDFAISA-N valinomycin Chemical compound CC(C)[C@@H]1NC(=O)[C@H](C)OC(=O)[C@@H](C(C)C)NC(=O)[C@@H](C(C)C)OC(=O)[C@H](C(C)C)NC(=O)[C@H](C)OC(=O)[C@@H](C(C)C)NC(=O)[C@@H](C(C)C)OC(=O)[C@H](C(C)C)NC(=O)[C@H](C)OC(=O)[C@@H](C(C)C)NC(=O)[C@@H](C(C)C)OC1=O FCFNRCROJUBPLU-DNDCDFAISA-N 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
【解決手段】センサ基板に交流インピーダンスを測定するためのAg/AgCl電極を設けて、計測部で交流インピーダンスを測定することで、被検体中の計測対象のイオン以外のイオンに対する補正を行って計測対象のイオン濃度を計測するイオンセンサとする。
【選択図】図2
Description
測定対象の一例としてNa+,K+,Cl-が含まれる溶液を考える。この溶液中の交流インピーダンス測定から得られる全電解質濃度は、これら三種のイオンによるものである。また、Cl-を含む溶液中に固体型Ag/AgCl電極を浸漬させた場合、溶液のイオン濃度変化は溶液抵抗Rsolの変化に加え、電極表面の酸化還元反応にも影響を与える。図5は電解質溶液中のナイキスト線図に対する等価回路である。ZWは溶液中のイオン拡散に起因するものであり、Rsolは溶液抵抗、RCTは電荷移動抵抗、Cdlは電気二重層容量であり、これらはイオン濃度に依存する。Cl-を含む溶液に挿入したAg/AgCl電極と考えた場合、溶液抵抗Rsolは試料溶液中の電解質濃度に、電荷移動抵抗RCTと電気二重層容量CdlはAgCl電極表面で生じるCl-との酸化還元反応にそれぞれ応答している。従って、交流インピーダンスの変化とその等価回路モデルの解析から溶液中の電解質濃度およびCl-濃度の算出が可能である。その結果、溶液の電解質濃度とCl-濃度によりK+とNa+を合わせた濃度が求められ、Cl-の影響を補正した電圧比からK+、Na+の各濃度を求めることができる。
C コネクタ
M 計測部
1-1 イオン感応膜
1-2 イオン感応膜
2-1 Ag/AgCl電極
2-2 Ag/AgCl電極
2-3 Ag/AgCl電極
3-1 電位計測用端子
3-2 電位計測用端子
3-3 電位計測用端子
3-4 交流インピーダンス測定用端子
3-5 交流インピーダンス測定用端子
4 配線
5 基板
Claims (2)
- コネクタを介して計測部に接続したセンサ基板に、所定のAg/AgCl電極とイオン感応膜を設けて、被検体に含まれる計測対象のイオンの濃度を計測するイオンセンサであって、
センサ基板に交流インピーダンスを測定するためのAg/AgCl電極を設けて、計測部で交流インピーダンスを測定することで、被検体中の計測対象のイオン以外のイオンに対する補正を行ってイオン濃度を計測するイオンセンサ。 - 被検体中の計測対象のイオン以外のイオンはCl-であって、計測したインピーダンスプロットと等価回路の比較により被検体に含まれるCl-濃度を測定する請求項1に記載のイオンセンサ。
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JP2014108571A JP6362256B2 (ja) | 2014-05-26 | 2014-05-26 | イオンセンサ |
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JP2014108571A JP6362256B2 (ja) | 2014-05-26 | 2014-05-26 | イオンセンサ |
Publications (2)
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JP2015224904A true JP2015224904A (ja) | 2015-12-14 |
JP6362256B2 JP6362256B2 (ja) | 2018-07-25 |
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JP2014108571A Active JP6362256B2 (ja) | 2014-05-26 | 2014-05-26 | イオンセンサ |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2023105583A1 (ja) * | 2021-12-06 | 2023-06-15 | オムロンヘルスケア株式会社 | 電解液分析用試験片、電解液分析装置および電解液分析方法 |
WO2024255977A1 (en) * | 2023-06-13 | 2024-12-19 | Coloplast A/S | Differentiation of liquid in ostomy appliance |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4739380A (en) * | 1984-01-19 | 1988-04-19 | Integrated Ionics, Inc. | Integrated ambient sensing devices and methods of manufacture |
JPS6453146A (en) * | 1987-01-09 | 1989-03-01 | Hitachi Ltd | Method and instrument for measuring electrical conductivity of solution and water quality control method |
JPH03127252U (ja) * | 1990-04-02 | 1991-12-20 | ||
JPH07128284A (ja) * | 1993-11-09 | 1995-05-19 | Japan Tobacco Inc | 溶液組成測定システム |
JPH09178690A (ja) * | 1995-12-26 | 1997-07-11 | Ngk Spark Plug Co Ltd | イオンセンサ及びイオン濃度測定方法 |
JP2009030981A (ja) * | 2007-07-24 | 2009-02-12 | Tanita Corp | 液体成分測定装置、基準液、液体成分測定方法 |
JP2012242244A (ja) * | 2011-05-19 | 2012-12-10 | Tanita Corp | 糖濃度測定装置 |
JP2013513811A (ja) * | 2009-12-15 | 2013-04-22 | コンセホ スペリオール デ インベスティガシオネス シエンティフィカス(セエセイセ) | インピーダンス測定に基づく多重検体システムおよび方法 |
JP2014095692A (ja) * | 2012-10-11 | 2014-05-22 | Horiba Ltd | マルチイオンセンサ |
-
2014
- 2014-05-26 JP JP2014108571A patent/JP6362256B2/ja active Active
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4739380A (en) * | 1984-01-19 | 1988-04-19 | Integrated Ionics, Inc. | Integrated ambient sensing devices and methods of manufacture |
JPS6453146A (en) * | 1987-01-09 | 1989-03-01 | Hitachi Ltd | Method and instrument for measuring electrical conductivity of solution and water quality control method |
JPH03127252U (ja) * | 1990-04-02 | 1991-12-20 | ||
JPH07128284A (ja) * | 1993-11-09 | 1995-05-19 | Japan Tobacco Inc | 溶液組成測定システム |
JPH09178690A (ja) * | 1995-12-26 | 1997-07-11 | Ngk Spark Plug Co Ltd | イオンセンサ及びイオン濃度測定方法 |
JP2009030981A (ja) * | 2007-07-24 | 2009-02-12 | Tanita Corp | 液体成分測定装置、基準液、液体成分測定方法 |
JP2013513811A (ja) * | 2009-12-15 | 2013-04-22 | コンセホ スペリオール デ インベスティガシオネス シエンティフィカス(セエセイセ) | インピーダンス測定に基づく多重検体システムおよび方法 |
JP2012242244A (ja) * | 2011-05-19 | 2012-12-10 | Tanita Corp | 糖濃度測定装置 |
JP2014095692A (ja) * | 2012-10-11 | 2014-05-22 | Horiba Ltd | マルチイオンセンサ |
Non-Patent Citations (1)
Title |
---|
小森達也 他: "新型構造ナトリウムイオンセンサの開発および応答解析", IEEJ TRANSACTIONS ON SENSORS AND MICROMACHINES, vol. 133, no. 7, JPN6018005774, 2013, pages 309 - 313, ISSN: 0003743027 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2023105583A1 (ja) * | 2021-12-06 | 2023-06-15 | オムロンヘルスケア株式会社 | 電解液分析用試験片、電解液分析装置および電解液分析方法 |
JP7619484B2 (ja) | 2021-12-06 | 2025-01-22 | オムロンヘルスケア株式会社 | 電解液分析用試験片、電解液分析装置および電解液分析方法 |
WO2024255977A1 (en) * | 2023-06-13 | 2024-12-19 | Coloplast A/S | Differentiation of liquid in ostomy appliance |
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