グラシーカーボン電極の簡単な作り方

概要

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It is recognized that the reversibility of the electrode reaction at the carbon paste electrode is far superior to the glassy carbon electrode. The carbon paste electrode, however, cannot be used for the electrode reaction in nonaqueous solution. In this report, the simple preparation of the glassy carbon electrode, which can be used even in nonaqueous solution, is described. The glassy carbon electrode (Tokai Electrode Co., φ=4 mm) was polished with 6080 mesh Cr2O3 powder and then with a fine emery paper carefully. The electrode surface was wiped with a filter paper. After washing with distilled water to remove Cr2O3 and other substances, the electrode surface was cleaned with ethanol carefully. By this procedure the electrode reaction of K3Fe(CN)6- K4Fe(CN)6 system in 1.5M KCl was almost reversible at this electrode. The reversibility of this system was examined by the method of chronopotentiometry, chronoamperometry and cyclic voltammetry.
社団法人日本分析化学会の論文