Abstract
A simple column electrode, S-CE, with a glassy carbon fibers working electrode stuffed into a Teflon tube was developed. The current–potential curves for the reductions of [Fe(CN)6]3− and Fe3+ observed at the S-CE were analyzed based on a theory for those at an ordinary column electrode. A quantitative electrolysis was performed at the S-CE rapidly within 20 s. An accurate and precise coulometric determination could be attained at the S-CE even with a fairly dilute solution. For example, coulometric reductions of 5 × 10−5 and 5 × 10-6 M Fe3+ were attained with efficiencies (n = 5) of 99.7 ± 0.2 and 101.9 ± 1.1%, respectively.
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Kasuno, M., Morishima, K., Matsushita, T. et al. Development of a Simple Column Electrode for Sensitive and Rapid Coulometry. ANAL. SCI. 25, 941–945 (2009). https://doi.org/10.2116/analsci.25.941
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DOI: https://doi.org/10.2116/analsci.25.941