Electroanalytical Methods
Electroanalysis is the science of quantitative electrochemical measurement of the composition or properties of a chemical system. Common electroanalytical methods include: (cyclic) voltammetry, (chrono)amperometry, potentiometry, coulometry, and electrochemical impedance spectroscopy (EIS). These methods are experiments performed either in a static electrolyte solution or in an electrolyte solution subject to a forced fluid flow. The results sought in electroanalysis include:
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Measurement of the concentration of an analyte — for example, glucose, or a gas-phase species that dissolves in the electrolyte solution. This technique is often referred to as electrochemical sensing. The most common sensing method is by recording the concentration-dependent current due to an analyte-specific reaction: this is called amperometric sensing.
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Measurement of the kinetic and/or thermodynamic parameters describing an electrochemical reaction on a given electrode surface.
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Measurement of the transport properties of an electroactive chemical species.
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Investigation of the mechanism of an electrochemical reaction and the further reactivity of the electrochemically generated chemical species.