Heyrovsky has lectured on polarography in the United States of.    From Wordnik.com.  [Jaroslav Heyrovsky - Biography] Reference

But, when speaking of polarography, one primarily thinks about the classical polarograph and its step curves.    From Wordnik.com.  [Nobel Prize in Chemistry 1959 - Presentation Speech] Reference

The 13 experiments described in the Practical Voltammetry (8.757.5003) monograph are intended to introduce the reader to the basic principles of polarography and voltammetry using a mercury electrode and provides examples showing the use of these methods in analytical chemistry.    From Wordnik.com.  [Manufacturingtalk - manufacturing industry news] Reference