Screening and mapping of pigments in paintings using scanning electrochemical microscopy (SECM)

The use of the scanning electrochemical microscopy (SECM) technique for identifying and mapping of both organic and inorganic pigments in sub-microsamples from pictorial specimens is described. This methodology, inspired by the voltammetry of immobilized particles technique, permits the study of tex...

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Bibliographic Details
Published in:Analyst (London) 2015-02, Vol.140 (4), p.1065-1075
Main Authors: Doménech-Carbó, Antonio, Doménech-Carbó, María Teresa, Silva, Miguel, Valle-Algarra, Francisco Manuel, Gimeno-Adelantado, José Vicente, Bosch-Reig, Francisco, Mateo-Castro, Rufino
Format: Article
Language:English
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Summary:The use of the scanning electrochemical microscopy (SECM) technique for identifying and mapping of both organic and inorganic pigments in sub-microsamples from pictorial specimens is described. This methodology, inspired by the voltammetry of immobilized particles technique, permits the study of textural properties of paint layers and mapping the distribution of pigment grains upon application of different potentials to the substrate. A combination of the redox competition SECM strategy with voltammetry yields a local identification methodology for different organic and inorganic pigments in paint samples.
ISSN:0003-2654
1364-5528
DOI:10.1039/c4an01911c