Potentiometric sensors measure the accumulation of a charge potential at the working electrode compared to the reference electrode in an electrochemical cell with zero current flowing between them. ... The relationship between the concentration and the potential is given from a variation of the Nernst equation (Eq.

How does a potentiometry work?

Potentiometry is a technique that is used in analytical chemistry, usually to find the concentration of a solute in solution. In this technique, the potential between two electrodes is measured using a high-impedance voltmeter (Wang, 2000). Use of a high-impedance voltmeter ensures that current flow is negligible.

What do you mean by potentiometric sensor?

A potentiometric sensor is a type of chemical sensor that may be used to determine the analytical concentration of some components of the analyte gas or solution. These sensors measure the electrical potential of an electrode when no current is present.