EP0218530A2
Expired / Lapsed
EP
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Ionic concentration measurement method
Assignee: Terumo Corp
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Filing: 1986-10-02
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Granted: —
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Expires: 2006-10-02
Abstract
Abstract An electrochemical cell is formed by immersing an electrochemical ion sensor and a reference electrode electrode into a solution of interest, the electrochemical ion sensor exhibiting ion selectivity with respect to an ion of interest and having a high electrode resistance. A current which flows through the electrochemical cell is measured while the potential of the electrochemical ion sensor is held to a constant potential with respect to the reference electrode. The current so obtained are proportional to the logarithm value of the concentration of the ion.
Inventors
- 👤 Shuichiro Yamaguchi
- 👤 Norihiko Ushizawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 06:19
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/416; G01N27/42; G01N27/403; G01N27/4035; G01N27/28; G01N27/49
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
77 words
A method of measuring ionic concentration comprising the steps of: forming an electrochemical cell by immersing an electrochemical ion sensor and a reference electrode into a solution of interest, said electrochemical ion sensor exhibiting ion selectivity with respect to an ion of interest and having a relative high electrode resistance, and measuring a current which flows through said electrochemical cell while the electrochemical ion sensor is held at a constant potential with respect to the reference electrode.
Claim 2
Independent Claim
77 words
A method of measuring ionic concentration comprising the steps of: forming an electrochemical cell by immersing an electrochemical ion sensor and a reference electrode into a solution of interest, said electrochemical ion sensor exhibiting ion selectivity with respect to an ion of interest and having a relative high electrode resistance, and measuring a current which flows through said electrochemical cell while the electrochemical ion sensor is held at a constant potential with respect to the reference electrode.
Claim 3
Dependent Claim
52 words
The method according to claim 1, wherein said electrochemical ion sensor comprises: an electrically conductive substrate; a redox layer deposited on a surface of said electrically conductive substrate; and an ion selective layer, which exhibits ion selectivity with respect to an ion of interest, deposited on a surface of said redox layer.
References Cited (Backward Citations)
No citation records indexed.
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