The Nobel Prize in Chemistry 1959 was awarded to Jaroslav Heyrovsky "for his discovery and development of the polarographic methods of analysis".
Polarography is a subclass of voltammetry where the working electrode is a dropping mercury electrode (DME) or a static mercury drop electrode (SMDE). Polarography is an voltammetric measurement whose response is determined by combined diffusion/convection mass transport. As a linear sweep method controlled by convection/diffusion mass transport, the current vs. potential response of a polarographic experiment has the typical sigmoidal shape.
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