Fabrication and electrochemical study of [Ru(NH3)6]3+/Nafion modified electrodes for the determination of trace amounts of Pb2+, Cd2+, and Zn2+ via anodic stripping voltammetry

College

College of Science

Department/Unit

Physics

Document Type

Article

Source Title

E-Polymers

Volume

16

Issue

2

First Page

117

Last Page

123

Publication Date

3-1-2016

Abstract

[Ru(NH3)6]3+/Nafion modified indium tin oxide (ITO) electrodes were fabricated via the drop coating technique and were used for the simultaneous determination of lead (Pb2+), cadmium (Cd2+), and zinc (Zn2+) in trace amounts using anodic stripping voltammetry (ASV). The amount of [Ru(NH3)6]3+ in the coating solution was varied at 5 mg, 10 mg, and 15 mg. The fabricated electrodes were used to detect varying concentrations of Pb, Cd and Zn. ASV results showed that as the amount of [Ru(NH3)6]3+ was increased, the reduction current of the heavy metals increased as well. The Pearson correlation values obtained for Pb and Cd were close to 1.0, indicating a strong positive linear relationship between the variables. The minimum heavy metal concentration that can be simultaneously detected by the fabricated electrodes is 0.5 ppm. © 2016 by De Gruyter.

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Digitial Object Identifier (DOI)

10.1515/epoly-2015-0210

Disciplines

Physics

Keywords

Heavy metals; Lead; Cadmium; Zinc Anodic stripping voltammetry

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