Gold nanoparticle/hexaammineruthenium/Nafion® modified glassy carbon electrodes for trace heavy metal detection in commercial hair dyes

College

College of Science

Department/Unit

Physics

Document Type

Article

Source Title

Analytical Methods

Volume

9

Issue

29

First Page

4240

Last Page

4246

Publication Date

8-7-2017

Abstract

Gold nanoparticle (AuNP)/hexaammineruthenium(iii) ([Ru(NH3)6]3+)/Nafion® modified glassy carbon electrodes (GCEs) were fabricated and used as working electrodes in the determination of lead and cadmium in commercial hair dyes. The reversibility and stability of the modified electrodes were examined using cyclic voltammetry in which the voltammograms showed reversible peaks. Lead (Pb2+), and cadmium (Cd2+) were detected through anodic stripping voltammetry. The AuNP-[Ru(NH3)6]3+ amount chosen to detect lead and cadmium in hair dyes was 3 mg and 1 mg, respectively, since it was able to simultaneously detect the said metal ions. Furthermore, the peak current and metal concentration displayed a linear relationship with strong correlation values from 0.30 part per million (ppm) to 0.75 ppm for Pb2+ and Cd2+. The limits of detection are 0.0450 ppm and 0.20 ppm for lead and cadmium, respectively. Atomic absorption spectrometry was used to verify the concentrations in each solution. © 2017 The Royal Society of Chemistry.

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Digitial Object Identifier (DOI)

10.1039/c7ay01114h

Disciplines

Physics

Keywords

Hair dyes--Lead content; Hair dyes--Cadmium content

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