2 research outputs found
Nafion® as advanced immobilisation substrate for the voltammetric analysis of electroactive microparticles: the case of some artistic colouring agents
Voltammetry of microparticles is applied to characterise
and to identify solid analytes of interest in the field
of cultural heritage. Nafion® is used for the immobilisation
of solid microparticles onto the surface of a glassy carbon
electrode by exploiting the deposition onto the electrode
surface of a micro-volume of a suspension of the microsample
in polymeric solution. Cyclic voltammetry and
square wave voltammetry are applied to characterise and
to identify the microparticles immobilised in the Nafion®
coating. The analyte studied in this work is Prussian Blue as
a typical inorganic pigment, with a relatively simple electrochemical
behaviour. The proposed method is applied to a
sample of Venetian marmorino plaster. The performance of
Nafion® for this analysis is compared with that of the
polymer Paraloid B72