Pulse polarography

Summary The application of a pulse technique to polarography results in a further improvement in polarographic performance, the new instrument being capable of detecting reversibly reduced species at concentrations as low as 10^–8 M, and irreversibly reduced species at 5 · 10^–8 M. The new instrument also yields both derivative and normal polarograms of much improved types. We are indebted to Mr. R. J. Jacob of the Electronics Division, A.E.R.E., for invaluable assistance in the construction of the electronic equipment.