Quantitative and Qualitative Aspects of Voltammetry

Determining Concentration bet s assume that the redox reaction at the working electrode is 

the limiting current, is a linear function of the concentration of O in bulk solution, and a quantitative analysis is possible using any of the standardization methods discussed in Chapter 5. Equations similar to equation 11.35 can be developed for other forms of voltammetry, in which peak currents are related to the analyte s concentration in bulk solution. 

Determining the Standard-State Potential To extract the standard-state potential, or formal potential, for reaction 11.34 from a voltammogram, it is necessary to rewrite the Nernst equation 

To derive a similar equation for the concentration of R at the electrode surface we note that 

Since the concentration of R in bulk solution is zero, this equation simplifies to 

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