JPS56150345A - Measuring device for ion concentration - Google Patents
Measuring device for ion concentrationInfo
- Publication number
- JPS56150345A JPS56150345A JP5357180A JP5357180A JPS56150345A JP S56150345 A JPS56150345 A JP S56150345A JP 5357180 A JP5357180 A JP 5357180A JP 5357180 A JP5357180 A JP 5357180A JP S56150345 A JPS56150345 A JP S56150345A
- Authority
- JP
- Japan
- Prior art keywords
- sensor
- liquid
- vessel
- reference electrode
- ion
- 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.)
- Pending
Links
Classifications
-
- 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
- G01N27/414—Ion-sensitive or chemical field-effect transistors, i.e. ISFETS or CHEMFETS
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Molecular Biology (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Engineering & Computer Science (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)
Abstract
PURPOSE:To measure desired ion concn. highly accurately by using a semiconductor ion sensor for reference electrode having roughly the same temp. characteristics as those of a semiconductor ion sensor for measurment as a reference electrode. CONSTITUTION:A semicoductor ion sensor 23 for measurment which selectively senses the ions to be measured is disposed by being immersed in the specimen liquid 22 housed in the 1st vessel 21 in a manner that a common gate part contacts the liquid 22. The 2nd vessel 24 is provided in the 1st vessel 21 by being immersed in the liquid 22, and internal liquid 25 is housed in this vessel. Also, a semiconductor sensor 26 for reference electrode having roughly the same temp. characteristics as the temp. characteristics of the sensor 23 is provided in a manner that the gate part contacts the internal liquid 25. Since the sensor 23 and the sensor 26 are respectively driven by constant current, the desired ion concn. in the liquid 22 is measured by operation from the difference in the output voltages of the sensor 23 and the sensor 26 taken out through an operational amplifier 31.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5357180A JPS56150345A (en) | 1980-04-24 | 1980-04-24 | Measuring device for ion concentration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5357180A JPS56150345A (en) | 1980-04-24 | 1980-04-24 | Measuring device for ion concentration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56150345A true JPS56150345A (en) | 1981-11-20 |
Family
ID=12946513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5357180A Pending JPS56150345A (en) | 1980-04-24 | 1980-04-24 | Measuring device for ion concentration |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56150345A (en) |
-
1980
- 1980-04-24 JP JP5357180A patent/JPS56150345A/en active Pending
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