Determination of lead (Pb2+) by anodic stripping voltammetry based on [Ru(NH3)6]3+/Nafion modified electrodes

College

College of Science

Department/Unit

Physics

Document Type

Article

Source Title

Journal of New Materials for Electrochemical Systems

Volume

17

Issue

4

First Page

205

Last Page

208

Publication Date

1-1-2014

Abstract

Chemically modified [Ru(NH3)6]3+ doped Nafion→ thin film was fabricated on indium tin oxide (ITO) coated glass electrodes by using the drop-coating method to detect heavy metal ions of Pb(II) in de-ionized water analyte solution via anodic stripping voltammetry (ASV). This study also determined the effect of varying the concentration of the mediator ([Ru(NH3)6]3+) on the detection of the said heavy metals. The redox mediator Ru(NH3)6]3+ used in the study was effectively incorporated and immobilized within the Nafion modified electrodes. Lead concentration in the electrolyte solution and the concentration of the redox mediator was varied to control the properties of the fabricated electrodes which utilized for heavy metal detection through ASV. The conducting properties of ITO electrodes were enhanced with the deposition of Nafion→ attaining minimal interference. The stripping current peaks increased with the concentration of the heavy metal present in the solution as well as with the mediator concentration. © J. New Mat. Electrochem. Systems.

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Digitial Object Identifier (DOI)

10.14447/jnmes.v17i4.390

Disciplines

Physics

Keywords

Heavy metals; Anodic stripping voltammetry; Electrochemistry

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