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.
The Electroanalysis interface is designed for efficient simulation of electroanalytical methods. Many of the features found in the physics interface are shared with the Current Distribution interfaces and Transport of Diluted Species interfaces, subject to the simplifying assumption of zero electric field in the electrolyte solution.
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The Primary and Secondary Current Distribution Interfaces
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The Transport of Diluted Species Interface