Analysis of the static mercury drop electrode below the limiting current

Multimode triple sampling polarography in the study of amalgamation and sphericity effects at the static mercury drop electrode

“…Sphericity effects increase the current response at a spherical electrode compared to that of a planar electrode and also shift the half-wave potentials cathodically, especially for amalgam-forming systems (13,15,16,19,22,24,25). For systems with a solution-soluble reduction product the effects of sphericity upon the half-wave potentials are small (16,24).…”

“…0003-2700/87/0359-2383S01.50/0 that the drop does not grow instantaneously (area-step) and that the current flowing during the drop growth is irreproducible and dependent on many factors in a complex way (11)(12)(13). This current can deplete the solution at the proximity of the drop in the same way that a DME, with the potential applied at drop birth, does.…”