### Development of a Simple Column Electrode for Sensitive and Rapid CoulometryDevelopment of a Simple Column Electrode for Sensitive and Rapid Coulometry

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 Author Kasuno, Megumi ♦ Morishima, Katsuki ♦ Matsushita, Takayuki ♦ Kihara, Sorin Source J-STAGE Content type Text Publisher The Japan Society for Analytical Chemistry Language English
 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 $Fe^{3+}$ 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 $Fe^{3+}$ were attained with efficiencies (n = 5) of 99.7 ± 0.2 and 101.9 ± 1.1%, respectively. ISSN 09106340 Learning Resource Type Article Publisher Date 2009-07-10 e-ISSN 13482246 Journal Analytical Sciences(analsci) Volume Number 25 Issue Number 7 Page Count 5 Starting Page 941 Ending Page 945