Amperometric titrations:

We have discussed about the theory of Polarography and Amperometric titrations. We begin our discussion with a classical polarogram and then the dropping mercury electrode (DME). After that we discussed in detail the benefits of a DME and continued our discussions on limiting and migration current, followed through diffusion and residual current. A factors affecting residual current were then discussed. Half wave potential, E1/2, and effect on complexing agents on it were dealt with. The determination of n and reversibility were discussed taking the log plot of Cd(II) in 1 M KCl. Discussion of kinetic currents, adsorption waves, catalytic currents, maximum suppressors and polarographic maxima were then done. Discussion on qualitative as well as quantitative polarographic analysis including calibration plot, internal standard method and method of standard addition were done. We concluded our discussion on Polarography along with the instrument included in polarographic analysis. This was followed along with detailed discussion about the amperometric titrations whereas we begin with the benefits of amperometry followed through a few examples of amperometric titration.