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 , , , | Leave a comment

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 , , , | Leave a comment

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 , , , | Leave a comment

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 , , , , , | Leave a comment