In this paper, the surfactant template approach and in situ plating of metal nanoparticles were used to
develop porous lead nanoparticles-modified thiol-functionalized polysiloxane
film glassy carbon
electrode (PbNPs-SH-PF/GCE). The modification of porous silica thin
films by PbNPs made it possible to
increase the electroactive area of SH-PF/GC electrodes, which enabled a significant enhancement of the
anodic stripping signal of determined Bi(III). This leads to improved bismuth detection limit, opening
promising applications in the
field of trace analysis. The obtained silica materials were characterized by
SEM, TEM-EDS, FTIR analysis and nitrogen sorption measurements. The electrode exhibited a linear
behavior in the concentration range of 0.01–0.2 nmol L1 (30 min.). The LOD was 2.8 pmol L1
(R2 = 0.9970). The proposed procedure was validated by comparing the results obtained for natural
water samples collected from Bystrzyca and Vistula rivers with those provided by application of ICP-MS
method.
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