ANODIC-STRIPPING SEMI-DIFFERENTIAL ELECTROANALYSIS WITH THIN MERCURY FILM ELECTRODE FORMED INSITU

The theory which describes the properties of the semiderivative of the current, e, vs. the electrode potential, E, curves in anodic stripping processes at thin mercury film electrode is presented in response to an imposed ramp signal. The semiderivative, e(t), of the current, i(t), is defined by [Formula omitted] Anodic stripping voltammetry from the thin mercury film electrode formed in situ on the rotating glassy carbon disk electrode has been carried out employing semidifferential electroanalysis as a detecting method. Experimental results are shown to be in good agreement with theory. The method is nearly comparable in sensitivity and resolution with the differential pulse stripping method, but is much faster to perform stripping. Reproducibility and sensitivity with a thin mercury film electrode formed in situ are much better than those with a hanging mercury drop electrode. © 1979, American Chemical Society. All rights reserved.