Silva, Josiel J. [UNESP]Paim, Leonardo L. [UNESP]Stradiotto, Nelson Ramos [UNESP]2015-03-182015-03-182014-08-01Electroanalysis. Weinheim: Wiley-v C H Verlag Gmbh, v. 26, n. 8, p. 1794-1800, 2014.1040-0397http://hdl.handle.net/11449/116189This 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.1794-1800engStripping voltammetryIronCopperEthanol fuelNafionCarbon nanotubesArtigo10.1002/elan.201400136WOS:000340557700018Acesso restrito0072173018005712