Journal
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
Volume 382, Issue 4, Pages 1169-1174Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s00216-005-3223-3
Keywords
edge-plane pyrolytic graphite; chlorine; amperometric detection; gas sensing
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The voltammetric responses of chlorine in aqueous acid solutions have been explored using different carbon-based electrodes. Edge-plane pyrolytic graphite has more electrochemical reversibility than glassy carbon, basal-plane pyrolytic graphite, or boron-doped diamond electrodes. A significant reduction in the overpotential is observed on the edge-plane pyrolytic-graphite electrode in contrast with the other carbon-based electrode substrates. These results suggest that edge-plane pyrolytic graphite can be optimally used as the working electrodes in Clark-cell devices for low-potential amperometric gas sensing of Cl-2.
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