Voltammetric behavior and determination of 17 beta-estradiol at multi-wall carbon nanotube-Nafion modified glassy carbon electrode. |
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| Authors: | Norifumi Terui Bunshi Fugetsu Shunitz Tanaka |
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| Institution: | Section of Integrated Environmental Science, Research Faculty of Environmental Earth Science, Hokkaido University, Sapporo, Japan. |
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| Abstract: | For the purpose of low cost and sensitive electrochemical detection of 17 beta-estradiol (E2), a multi-wall carbon nanotube (MWNT)-Nafion modified electrode was fabricated. The MWNT modified electrode shows enhancement for the anodic peak current of E2 compared with the value obtained using a bare electrode. The anodic peak current measured by square wave voltammetry after 5 min open-circuit accumulation was proportional to the concentration of E2 over the range of 2.5 x 10(-7) to 10 10(-6) M, and a detection limit of 1 x 10(-8) M was obtained. |
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