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

A cartridge comprising a plurality of ion-selective electrodes,

• wherein when one of the ion-selective electrodes is made as an ion-selective electrode A, and the other ion-selective electrode is made as an ion-selective electrode B,
• the ion-selective electrode A and the ion-selective electrode B comprising:
• an ion sensitive film having a Group-1 element ion, a Group-2 element ion, a Group-17 element ion, a hydronium ion or an ammonium ion as a target ion;
• an ion occluding material layer;
• and
• a conductive electrode, wherein
• an ion occluding material contained in the ion occluding material layer occludes the target ion,
• the ion occluding material is a porous coordination polymer, and
• the target ion of the ion-selective electrode A is different from the target ion of the ion-selective electrode B,
• the ion occluding material being a Prussian blue analog represented by structure formula AaMx[M′(CN)6]y□z.kH2O, wherein
• A is at least one type of Group-1 elements, Group-2 elements, hydronium, or ammonium,
• M and M′ are at least one type 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, and
• x and y are greater than zero;
• and a, z, and k are numbers equal to or greater than zero.

A method of manufacturing an ion-selective electrode,

• wherein the ion-selective electrode includes an ion sensitive film having a Group-1 element ion, a Group-2 element ion, a Group-17 element ion, a hydronium ion or an ammonium ion as a target ion, an ion occluding material layer, and a conductive electrode, and the ion occluding material layer includes a porous coordination polymer, the method comprising:
• a step of manufacturing the porous coordination polymer including:
• a step of mixing Solution A containing a transition metal M with Solution B containing a transition metal M′;
• and
• a step of recovering the porous coordination polymer from a product of the mixture,
• the transition metal M and the transition metal M′ are the same or different,
• at least Solution A contains the transition metal M in at least two different ions that have different valences, and
• at least one of Solution A and Solution B contains an organic ligand;
• adhering the ion occluding material layer to the conductive electrode;
• and
• adhering the ion sensitive film to the ion occluding material layer.

A method of manufacturing an ion-selective electrode,

• wherein the ion-selective electrode includes an ion sensitive film having a Group-1 element ion, a Group-2 element ion, a Group-17 element ion, a hydronium ion or an ammonium ion as a target ion, an ion occluding material layer, and a conductive electrode, the method comprising:
• a step of manufacturing the ion occluding material layer including:
• a step of dispersing an ion occluding material into a solution;
• a step of adding an oxidation-reduction substance to the solution in which the ion occluding material is dispersed;
• and
• a step of recovering the ion occluding material from the solution in which the oxidation-reduction substance is added, in which an ion occlusion ratio, which is a ratio of ions occluded by the ion occluding material to all ions in the oxidation-reduction substance, is adjusted by the addition of the oxidation-reduction substance;
• adhering the ion occluding material layer to the conductive electrode;
• and
• adhering the ion sensitive film to the ion occluding material layer.

A method of manufacturing an ion-selective electrode,

• wherein the ion-selective electrode includes an ion sensitive film having a Group-1 element ion, a Group-2 element ion, a Group-17 element ion, a hydronium ion or an ammonium ion as a target ion, an ion occluding material layer, and a conductive electrode, the method comprising:
• a step of manufacturing the ion occluding material layer including:
• a step of preparing a first ion occluding material in which an ion occlusion rate of the target ion is a first value;
• a step of preparing a second ion occluding material in which the ion occlusion rate of the target ion is a second value;
• and
• a step of mixing the first ion occluding material with the second ion occluding material;
• adhering the ion occluding material layer to the conductive electrode;
• and
• adhering the ion sensitive film to the ion occluding material layer.