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Journal of Applied Electrochemistry

, Volume 39, Issue 1, pp 65–70 | Cite as

Carbon nanotube-modified glassy carbon electrode for anodic stripping voltammetric detection of Uranyle

  • Ahmad Nozad GolikandEmail author
  • Mehdi Asgari
  • Mohammad Ghannadi Maragheh
  • Elaheh Lohrasbi
Original Paper

Abstract

A multi-wall carbon nanotube (MWNT) modified glassy carbon electrode (GCE) is described for the measurement of trace levels of uranium by anodic stripping voltammetry. In a pH 4.4 NaAc-Hac buffer containing 0.010 mol L−1 Mg(NO3)2, UO2 2+ was adsorbed onto the surface of a MWNT film coated glassy carbon electrode and then reduced at −0.40 V vs. Ag/AgCl. During the positive potential sweep the reduced uranium was oxidized and a well-defined stripping peak appeared at +0.20 V vs. Ag/AgCl. Low concentrations of Mg2+ significantly enhanced the stripping peak currents since they induced UO2 2+ to adsorb at the electrode surface. The response was linear up to 1.2 × 10−7 mol L−1 and the relative standard deviation at 2.0 × 10−8 mol L−1 uranium was 5.2%. Potential interferences were examined. The attractive behavior of the new “mercury-free” uranium sensor holds promise for on-site environmental and industrial monitoring of uranium.

Keywords

Anodic stripping voltammetry Uranyle Carbon nanotube Modified electrode Composite film electrode 

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Copyright information

© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  • Ahmad Nozad Golikand
    • 1
    Email author
  • Mehdi Asgari
    • 1
  • Mohammad Ghannadi Maragheh
    • 1
  • Elaheh Lohrasbi
    • 1
  1. 1.Jaber Ibne Hayan Research Labs., Chemistry DepartmentNSTRITehranIran

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