Portal de Periódicos da CAPES

Forensic Analysis of Brazilian Paintings of the 20th Century by Physicochemical Techniques

2022; RELX Group (Netherlands); Linguagem: Inglês

10.2139/ssrn.4114581

1556-5068

Nilton Thaumaturgo, Cláudia R. F. Souza, T.J.N.A. Fialho, Roberto Liarth, Ana Patrícia Silva de Oliveira, Diva Anélie de Araújo Guimarães, Valter S. Felix, André Rocha Pimenta, Ana Lúcia Crespo Oliveira, Renato Pereira de Freitas,

Building materials and conservation

This work studied suspicious and authentic artworks by Brazilian painters Ivan Serpa, Ismael Nery and Iberê Camargo by XRF, FTIR, OM and MA-XRF techniques. The studies made it possible to verify that all suspicious artworks are counterfeit artifacts. Different approaches such as principal component analysis and spectral deconvolution were performed on the XRF data. From these methods, it was possible to verify that the suspect artworks by Ivan Serpa and Iberê Camargo have different materiality of the authentic paintings. In addition, by MA-XRF images, a preparation layer for polychrome was not observed in the suspicious artifacts. For the artworks of Ismael Nery, the counterfeit artifacts were created on a low-quality paper support, which is not suitable for paintings. The suspicious artworks analyzed in this study were seized in a police operation in Rio de Janeiro, Brazil. Currently, in Rio de Janeiro, crimes involving artworks such as money laundering and forgery are growing. From this study, it was possible to build a database with information on the pigments and binders used by these artists. This information will be helpful in the forensic investigation of other artworks of these painters.