The design of new nanoscale materials has acquired evergreater
importance in recent years due to their wide-ranging
applications in various fields. Among these materials, metallic
nanoparticles are of great interest due to their important
properties and their numerous possible applications [21,22].
There are only a few works in the bibliography describing
the synthesis of gold nanoparticles on the surface of carbon
screen-printed electrodes. Their including chemical synthesis
by means of reduction with NaBH4 [23–25], or citrate
[26] and electrochemical deposition [27]. The latter provides
an easy and rapid alternative for the preparation of metallic
nanoparticle electrodes in a short space of time. In spite of
their possibilities these nanoparticle-modified carbon screenprinted
electrodes have not been very used in the analysis of
toxic elements. Only two works are described about the determination
of As(III) using gold nanoparticle-modified CSPE
[24,25].
The aim of this work is to determine Sb(III) by differential
pulse anodic stripping voltammetry (DPASV) using carbon
screen-printed electrodes modified with gold nanoparticles and,
to the best of the author’s knowledge, presents the first ever electrochemical
detection of Sb(III) with this type of nano-modified
electrodes.