Simultaneous Determination of Iron and Copper in Ethanol Fuel Using Nafion/Carbon Nanotubes Electrode

Author(s)

Silva, Josiel J. ^[1] ; Paim, Leonardo L. ^[1] ; Stradiotto, Nelson R. ^[1]

Affiliation

^[1] UNESP Univ Estadual Paulista, Inst Chem, Dept Analyt Chem, BR-14800060 Araraquara, SP - Brazil

• Document type: Journal article
• Source: Electroanalysis; v. 26, n. 8, p. 1794-1800, AUG 2014.
• Web of Science Citations: 12

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. (AU)

• FAPESP's process: 12/00258-5 - Development of new methods for determination of sugars, furanic aldehydes and ironic acids from lignocellulosic materials derivatives of cane sugar
• Grantee: Nelson Ramos Stradiotto
• Support Opportunities: Program for Research on Bioenergy (BIOEN) - Regular Program Grants
• FAPESP's process: 11/16186-0 - Simultaneous determination of iron and copper in ethanol fuel using modified carbon nanotube electrode
• Grantee: Josiel José da Silva
• Support Opportunities: Scholarships in Brazil - Master