Nafion (R) as advanced immobilisation substrate for the voltammetric analysis of electroactive microparticles: the case of some artistic colouring agents

作者：Moretto Ligia Maria^*; Montagner Francesca; Ganzerla Renzo; Ugo Paolo

来源：Analytical and Bioanalytical Chemistry, 2013, 405(11): 3603-3610.

DOI：10.1007/s00216-013-6796-2

• Voltammetry
• Microparticles
• Nafion (R)
• Cultural heritage
• Prussian Blue

Voltammetry of microparticles is applied to characterise and to identify solid analytes of interest in the field of cultural heritage. Nafion (R) 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 micro-sample in polymeric solution. Cyclic voltammetry and square wave voltammetry are applied to characterise and to identify the microparticles immobilised in the Nafion (R) 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 (R) for this analysis is compared with that of the polymer Paraloid B72.

• 出版日期2013-4