Voltammetry - PowerPoint PPT Presentation

Lecture 3

Lecture 3. Techniques and Instrumentation in Electrochemical Sensing. Cyclic voltammetry. for reversible reaction. Cyclic voltammetry. initial situation. formal potential reached in forward scan. max. current. formal potential reached in reversed scan. Cyclic voltammetry.

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Best seen broken into four categories

Best seen broken into four categories. Part 1: Ion Selective Electrodes. Part 2: Amperometric Sensors. Part 3: Step Voltammetry. Part 4: Cyclic Voltammetry. (3) Step Voltammetry. Why Voltammetry at all? Isnt ISE / Amperometrics good enough? According to the Prof – apparently not!

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Pulsed Voltammetric Techniques

Pulsed Voltammetric Techniques. Typical Set up for Polarography. DC Polarography. Sample-and-Hold or Tast (sampled-current) Voltammetry. Normal Pulse (NPV) vs. Tast Voltammetry. Differential Pulse (DPV) vs. Normal Pulse Voltammetry. NPV. DPV.

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604 views • 10 slides

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