WO2021131521A1 - 電気化学測定ユニット、電気化学測定装置及び電気化学測定方法 - Google Patents

電気化学測定ユニット、電気化学測定装置及び電気化学測定方法 Download PDF

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Publication number
WO2021131521A1
WO2021131521A1 PCT/JP2020/044585 JP2020044585W WO2021131521A1 WO 2021131521 A1 WO2021131521 A1 WO 2021131521A1 JP 2020044585 W JP2020044585 W JP 2020044585W WO 2021131521 A1 WO2021131521 A1 WO 2021131521A1
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WO
WIPO (PCT)
Prior art keywords
sample liquid
composite electrode
electrochemical
outlet
electrochemical measurement
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/JP2020/044585
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English (en)
French (fr)
Japanese (ja)
Inventor
宮村　和宏
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 JP2021567108A priority Critical patent/JP7466572B2/ja
Priority to CN202080085990.7A priority patent/CN114787618A/zh
Publication of WO2021131521A1 publication Critical patent/WO2021131521A1/ja
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
    • 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
    • G01N27/403—Cells and electrode assemblies

Definitions

  • the electrochemical measuring device 100 is, for example, as shown in FIG. 1, a flow-type measuring device that measures the pH and the like of a small amount of sample liquid flowing out of the analyzer A.
  • a trace amount refers to the case where the flow rate of the sample liquid supplied to the electrochemical measurement unit 1 is 2 ml / min or less.
  • the fixing portion 62 includes, for example, a male screw formed on the outer peripheral surface of the holding member 61 and a female screw formed on the inner peripheral surface of the electrode insertion port 5 and screwed into the male screw.
  • the composite electrode 12 in which the measurement electrode 121 having the sensitive portion 121b and the comparison electrode 122 having the liquid junction portion 122b are integrally formed is formed. Since it is used, the distance between the sensitive portion 121b and the liquid junction portion 122b can be reduced as compared with the case where the measurement electrode 121 and the comparison electrode are provided separately. As a result, even when the sample liquid is constantly flowing, the sensitive portion 121b and the liquid junction portion 122b can come into contact with the sample liquid flowing at substantially the same position, so that electrochemical characteristics such as pH can be obtained. Can be measured accurately. Further, since the composite electrode is used, it is not necessary to separately arrange the measurement electrode and the comparison electrode in the storage portion, and the internal volume of the storage portion can be reduced as much as possible, for example, 10 cm 3 or less. ..
  • the composite electrode 12 is a dome-shaped electrode, the composite electrode 12 can be further miniaturized, and the storage space 11c accommodating the composite electrode can also be further miniaturized.
  • the resin block is fixed to a housing CS that houses the resin block 11 and the composite electrode 12 and a back plate that supports the resin block 11 from behind. May be. More specifically, the resin block 11 is attached to the housing CS by, for example, tightening the screw holes H formed in the resin block 11 and the screw holes H provided in the housing CS with bolts or the like. It may be fixed. However, the mounting method is not limited to this.
  • a plurality of electrochemical measurement cells as described above may be integrally formed as one resin block.
  • These electrochemical measurement units are not necessarily those in which a rod-shaped electrode such as the composite electrode described above is inserted, and for example, a planar sensor is fitted in an internal storage space or a flow path. It may be something like.
  • various changes and combinations are possible within a range not contrary to the gist of the present invention.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Molecular Biology (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
PCT/JP2020/044585 2019-12-27 2020-12-01 電気化学測定ユニット、電気化学測定装置及び電気化学測定方法 Ceased WO2021131521A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2021567108A JP7466572B2 (ja) 2019-12-27 2020-12-01 電気化学測定ユニット、電気化学測定装置及び電気化学測定方法
CN202080085990.7A CN114787618A (zh) 2019-12-27 2020-12-01 电化学测定单元、电化学测定装置及电化学测定方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019238756 2019-12-27
JP2019-238756 2019-12-27

Publications (1)

Publication Number Publication Date
WO2021131521A1 true WO2021131521A1 (ja) 2021-07-01

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PCT/JP2020/044585 Ceased WO2021131521A1 (ja) 2019-12-27 2020-12-01 電気化学測定ユニット、電気化学測定装置及び電気化学測定方法

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JP (1) JP7466572B2 (https=)
CN (1) CN114787618A (https=)
WO (1) WO2021131521A1 (https=)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2023512432A (ja) * 2020-01-30 2023-03-27 メルク パテント ゲーエムベーハー インライン測定用プローブチャンバ

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55155953U (https=) * 1979-04-24 1980-11-10
JP2004340717A (ja) * 2003-05-15 2004-12-02 Babcock Hitachi Kk 酸化還元電位測定槽
JP2007071792A (ja) * 2005-09-08 2007-03-22 Dkk Toa Corp 電極内部液の気泡除去方法及び電気化学式センサ
JP2015102325A (ja) * 2013-11-20 2015-06-04 東亜ディーケーケー株式会社 フロー型電極装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3584594B2 (ja) * 1996-02-19 2004-11-04 松下電器産業株式会社 ｐＨセンサ及びイオン水生成器
JP3633077B2 (ja) * 1996-02-19 2005-03-30 松下電器産業株式会社 ｐＨセンサ及びイオン水生成器
JP3577824B2 (ja) * 1996-03-08 2004-10-20 松下電器産業株式会社 ｐＨセンサ及びイオン水生成器
JP3662692B2 (ja) * 1996-11-26 2005-06-22 松下電工株式会社 電解水生成装置
JP3903524B2 (ja) * 1997-05-14 2007-04-11 松下電工株式会社 電解水生成装置
JP2000009675A (ja) 1998-06-25 2000-01-14 Matsushita Electric Works Ltd 水質検出器
JP4818715B2 (ja) 2005-12-27 2011-11-16 東亜ディーケーケー株式会社 複合電極及びフロー型電極装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55155953U (https=) * 1979-04-24 1980-11-10
JP2004340717A (ja) * 2003-05-15 2004-12-02 Babcock Hitachi Kk 酸化還元電位測定槽
JP2007071792A (ja) * 2005-09-08 2007-03-22 Dkk Toa Corp 電極内部液の気泡除去方法及び電気化学式センサ
JP2015102325A (ja) * 2013-11-20 2015-06-04 東亜ディーケーケー株式会社 フロー型電極装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2023512432A (ja) * 2020-01-30 2023-03-27 メルク パテント ゲーエムベーハー インライン測定用プローブチャンバ
JP7498277B2 (ja) 2020-01-30 2024-06-11 メルク パテント ゲーエムベーハー インライン測定用プローブチャンバ

Also Published As

Publication number Publication date
CN114787618A (zh) 2022-07-22
JP7466572B2 (ja) 2024-04-12
JPWO2021131521A1 (https=) 2021-07-01

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