ANODIC-STRIPPING VOLTAMMETRY AT A RETICULATED MERCURY VITREOUS CARBON ELECTRODE

Anodic stripping voltammetry has been modified with a porous mercury-coated electrode of reticulated vitreous carbon in a flow-through configuration. Exploratory experiments have shown the dependence of the stripping peak current upon the deposition time, scan rate, flow rate, electrode length, and concentration. The deposition step involves deposition of a substantial fraction of the metals. For convenient quantitation of concentration ranging from 3 × 10-7 M to 3 × 10-9 M, a 0.5- to 5-min deposition is sufficient. High precision of results is maintained on the same film. Electrodes are easily fabricated, and are inexpensive enough to be disposable. © 1979, American Chemical Society. All rights reserved.