Abstract
An analytical anodic stripping voltammetry method has been developed for the simultaneous determination of copper and mercury at ultratrace levels using the Bi–AuNP modified CPE.
Highlights
Due to their interesting properties, Cu and Hg have been extensively used in industry and there are enormous concerns regarding the contamination of the environment with these metal ions through industrial activities
Energy dispersive X-ray uorescence (EDXRF) measurements were carried out on the carbon paste electrode (CPE)/Bi–AuNPs substrate and the results are shown in Fig. 2A and B
The presence of Bi and Au on the CPE modi ed with a Bi lm (CPE/Bi)–AuNPs substrate was observed from the measurements at an elemental ratio of 2 : 1 (Au/Bi)
Summary
Due to their interesting properties, Cu and Hg have been extensively used in industry and there are enormous concerns regarding the contamination of the environment with these metal ions through industrial activities. Cu is generally present in the bound form with ceruloplasmin and is non-toxic.[1] Free Cu in the body causes toxicity as it generates reactive oxygen species and damages proteins, lipids and DNA.[1] Stripping voltammetry is one of the most important methods of determination of Cu in wide concentration ranges using a mercury drop electrode. Due to the toxicity of mercury, mercury drop electrodes are being avoided in stripping voltammetry as out of all the heavy metal ions mercury toxicity is more severe than the others. The modi ed electrode developed in the present investigation was applied for the simultaneous determination of Cu and Hg in water samples
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