A simple approach for simultaneous detection of cadmium(II) and lead(II) based on glutathione coated magnetic nanoparticles as a highly selective electrochemical probe

By M. Baghayeri, Amirhassan Amiri, B. Maleki, Zahra Alizadeh, O. Reiser. Sensors and actuators. B, Chemical, 2018

148 citations recorded by the source corpus.

Abstract We introduce the synthesis and electrochemical application of a glutathione functionalized magnetic nanocomposite (GSH@Fe3O4) for the development of a simple, stable and selective sensor for heavy metal ion detection in real-life samples for the first time. The monitoring method is based on electrochemical preconcentration/reduction of metal ions onto a GSH@Fe3O4 modified magnetic glassy carbon electrode, followed by subsequent anodic stripping. This method allows the detection of Pb2+ and Cd2+ ions with high sensitivity (calculated detection limits of 0.182 μgL−1 and 0.172 μgL−1), low cost, and great convenience in operation and was tested for different water samples. The results infer that the GSH@Fe3O4 nanocomposite can be an alternative candidate for practical applications in electrochemical detection of metal ions.

Subfields: Electrical and Electronic Engineering, Electrochemistry, Spectroscopy

View Paper: https://www.semanticscholar.org/paper/18c8dca35d6135b1be3a9603be71afb52ff6d1ae