Abstract
Spectroscopic graphite has several features that make it attractive as a substrate material for the construction of polymer-modified electrodes. In particular, its high porosity aids in the adhesion of highly swollen polymer films used as electrode coatings. The voltammetry of various organic compounds is demonstrated to be as well-behaved as that reported for activated forms of glassy carbon. The high background charge observed at these graphite electrodes, however, obeys an apparent t 1 2 relationship, making conventional means of background compensation inadequate. Electrode areas determined at neutral pH in KCl + phosphate and nitrate media appear to be reasonably consistent, but values obtained in extremely alkaline media (1 M KOH) are consistently low. An apparent surface CE mechanism is noted as a possible explanation for this unusual behavior.
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