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

作者：Baghayeri Mehdi^*; Amiri Amirhassan; Maleki Behrooz; Alizadeh Zahra; Reiser Oliver

来源：Sensors and Actuators B: Chemical , 2018, 273: 1442-1450.

DOI：10.1016/j.snb.2018.07.063

• Stripping voltammetry
• Cadmium(II)
• Lead(II)
• Nanocomposite
• Glutathione

We introduce the synthesis and electrochemical application of a glutathione functionalized magnetic nano composite (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 pre-concentration/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 mu gL(-1) and 0.172 mu gL(-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.

• 出版日期2018-11-10