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What are the different types of amperometry?
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Amperometry is an electroanalytical technique that measures the current flowing through an electrochemical cell. Here are some common types of amperometry:
Linear sweep voltammetry (LSV): The potential applied to the working electrode is swept linearly with time. The resulting current-voltage curve can be used to determine the oxidation or reduction potential of an analyte.
Cyclic voltammetry (CV): The potential applied to the working electrode is swept linearly from an initial potential to a final potential, then reversed back to the initial potential. This allows for the study of reversible electrochemical reactions.
Differential pulse voltammetry (DPV): A series of potential pulses are applied to the working electrode, and the current is measured at the end of each pulse. This technique is more sensitive than linear sweep voltammetry.
Square wave voltammetry (SWV): A square wave potential waveform is applied to the working electrode. This technique is even more sensitive than differential pulse voltammetry.
Chronoamperometry: A constant potential is applied to the working electrode, and the current is measured as a function of time. This technique is used to study the kinetics of electrochemical reactions.
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