US 11,988,627 B2
Solid-contact ion-selective electrode
Mikkel Holmen Andersen, Galten (DK); and Kristian Bastholm Knudsen, Risskov (DK)
Assigned to Unisense A/S, Aarhus N (DK)
Appl. No. 18/272,737
Filed by Unisense A/S, Aarhus N (DK)
PCT Filed Feb. 8, 2022, PCT No. PCT/EP2022/052947
§ 371(c)(1), (2) Date Jul. 17, 2023,
PCT Pub. No. WO2022/171593, PCT Pub. Date Aug. 18, 2022.
Claims priority of application No. 21156045 (EP), filed on Feb. 9, 2021.
Prior Publication US 2024/0035999 A1, Feb. 1, 2024
Int. Cl. G01N 27/333 (2006.01)
CPC G01N 27/333 (2013.01) 12 Claims
OG exemplary drawing
 
1. An ion-selective electrode comprising:
an ion selective membrane configured to be in contact with a solution to be measured;
a transducer layer in contact with said ion selective membrane;
a conductive electrode in contact with said transducer layer; wherein said transducer layer comprises transition metal oxides; wherein said transition metal oxides comprise at least one transition metal in a mixed redox state, said at least one transition metal in a mixed redox state being Mn2+/Mn3+;
wherein said ion selective membrane is adapted for sensing one or more ions selected from NO3−, NO2−, Cl−, Br−, HSO4−, SO42−, H2PO4−, HPO42−, PO43−, NH4+, H+.