Cathodic Stripping Voltammetry of Tellurium(TV) at a Bismuth Film Electrode

摘要

Stripping analysis has been widely employed for the determination of trace metals in solutions due to its high sensitivity which is rooted in the combination of an effective pre-concentration step with advanced electrochemical stripping/quantification possibilities. Although the mercury film electrode (HgFE) has been generally used for stripping analysis, the bismuth film electrode (BiFE) has attracted much attention as an alternative to the HgFE since bismuth is environmentally benign unlike mercury. Another positive feature of BiFE in stripping analysis stems from the proclivity of bismuth, to form alloys with metals, analogous to mercury amalgams. As a result, BiFE have been widely used as the working electrode for the determination of metals and other elements by anodic, potentiometric, and adsorptive stripping voltammetry techniques.