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Tag Archives: coulometry
External Generation of Oxidizing Agents or Reducing Agents
Shown here is one example of a device for the external generation of oxidizing agents and reducing agents for controlled-current coulometry. A solution containing the mediator flows into a small-volume electrochemical cell. The resulting oxidation products, which form at the … Continue reading
Posted in Illustration
Tagged coulometry, electrochemistry, external generation, mediator
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Controlled-Current Coulometry
A second approach to coulometry is to use a constant current in place of a constant potential, which produces the current–time profile shown here. Controlled-current coulometry has two advantages over controlled-potential coulometry. First, the analysis time is shorter because the … Continue reading
Posted in Illustration
Tagged controlled-current, coulometry, electrochemistry, mediator
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Controlled-Potential Coulometry
Coulometry is based on an exhaustive electrolysis of the analyte. By exhaustive we mean that the analyte is completely oxidized or reduced at the working electrode or that it reacts completely with a reagent generated at the working electrode. During an … Continue reading
Posted in Illustration, Photo
Tagged controlled-potential, coulometry, electrochemistry, working electrode
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Family Tree for Interfacial Electrochemical Techniques
Shown here is a family tree that highlights a number of interfacial electrochemical techniques. The specific techniques are shown in red, the experimental conditions are shown in blue, and the analytical signals are shown in green. At the first level, … Continue reading
Posted in Illustration
Tagged coulometry, dynamic techniques, electrochemistry, potentiometry, static techniques, voltammetry
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