Gold Nano Particle and Reduced Graphene Oxide Composite Modified Carbon Paste Electrode for the Ultra Trace Detection of Arsenic (III)

作者：Sahoo Srikant; Sahoo Prasanta Kumar; Satpati Ashis Kumar

来源：Electroanalysis, 2017, 29(5): 1400-1409.

DOI：10.1002/elan.201600676

<jats:title>Abstract</jats:title><jats:p>Gold nanoparticles (AuNPs) and reduced graphene oxide (RGO) composite modified carbon paste electrode (CPE) was prepared by electrodepositing AuNPs over the reduced graphene oxide (RGO) modified carbon paste electrode. The composite material was characterised using scanning electron microscopy (SEM) and transmission electron microscopy (TEM) and atomic force microscopy (AFM) techniques. The nano composite modified electrode was applied for the determination of total As and for the inorganic speciation of As(III) and As(V) in environmental samples. The linear dynamic range was obtained for the determination of As(III) in the present method from 1μgL<jats:sup>−1</jats:sup> to 20 μgL<jats:sup>−1</jats:sup> and the limit of detection(LOD) in the standard solution was found to be 0.13 μgL<jats:sup>−1</jats:sup> for the 300 sec deposition time in 10 mL supporting electrolyte solution. This method was applied for the determination of As (III) in water and soil samples. The results were agreed well with the result obtained from the hydride generation atomic absorption spectrometry.</jats:p>

• 出版日期2017-5