Simultaneous Determination of Iron and Copper in Ethanol Fuel Using Nafion/Carbon Nanotubes Electrode
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Undergraduate course
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Wiley-Blackwell
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Article
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Abstract
This work presents the analytical method development for iron and copper determination in ethanol fuel. This method was developed using stripping voltammetry with a glassy carbon electrode modified with Nafion/Carbon-nanotubes. With linear sweep stripping voltammetry was achieved a limit of detection of 7.1 x 10(-7) mol L-1 for Fe3+ and 5.1 x 10(-8) mol L-1 for Cu2+. The amperometric sensitivities were 2.0 x 10(6) mu A mol(-1) L for Fe3+ and 2.8 x 10(7) mu A mol(-1) L for Cu2+. The recovery study showed that the method has good accuracy and repeatability, with recovery of 108 and 103% for Fe3+ and Cu2+ respectively.
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Keywords
Stripping voltammetry, Iron, Copper, Ethanol fuel, Nafion, Carbon nanotubes
Language
English
Citation
Electroanalysis. Weinheim: Wiley-v C H Verlag Gmbh, v. 26, n. 8, p. 1794-1800, 2014.
