Ion-selective electrode, method of manufacture thereof, and cartridge

US10871464B2 · kind B2 · utility

Assignee

• HITACHI HIGH-TECH CORPORATION · JP

Inventors

• Yu Ishige · Tokyo, JP
• Wolfgang Schuhmann · Bochum, DE
• Stefan KLINK · Bochum, DE

Key dates

• Filing date: Aug 30, 2016
• Grant date: Dec 22, 2020
• Expiry date: Feb 24, 2037

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N27/3335
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

There is provided a solid-contact ion-selective electrode having a high potential stability and potential reproducibility. The ion-selective electrode includes an ion sensitive film having a Group-1 element ion, a Group-2 element ion, a hydronium ion or an ammonium ion as a target ion, an ion occluding material layer, and a conductive electrode, wherein the ion occluding material contained in the ion occludes material layer occluding the target ion, the ion occluding material being a Prussian blue analog represented by the structure formula AaMx[M′(CN)6]y□z.kH2O. Herein, A is one type or a plurality of types of Group-1 elements, Group-2 elements, hydronium, or ammonium; M and M′ are one type or a plurality of types of transition metals; M or M′ includes at least one of nickel, cobalt, copper, silver, and cadmium; □ is a vacancy in a porous coordination polymer; x and y are greater than zero; and a, z, and k are numbers equal to or greater than zero.