Patent ID: 8801917

Claim:
An electrochemical sensor for determining a charged particle concentration in an analyte, the electrochemical sensor comprising: a first electrode with a first ion-sensitive dielectric provided thereon, the first electrode being configured to contact the analyte via the first ion-sensitive dielectric to obtain a first interface between the first ion-sensitive dielectric and the analyte, wherein the first ion-sensitive dielectric is further provided with a probe molecule layer comprising probe molecules; a second electrode with a second ion-sensitive dielectric provided thereon, the second electrode being configured to contact the analyte via the second ion-sensitive dielectric to obtain a second interface between the second ion-sensitive dielectric and the analyte, and a controller configured to measure a potential difference between the first electrode and the second electrode using at least two different values of a temperature difference between the first interface and the second interface to obtain at least two measurement points of a surface-potential versus interface-temperature curve.