ABSTRACT
The application of spectroscopic and imaging techniques, with non-invasive methodologies and portable equipment, to the study of two paintings by the Brazilian artist Oscar Pereira da Silva allowed the characterization of these artworks finalized in 1922. With Energy Dispersive X Ray Fluorescence (ED-XRF) and Raman analysis it was determined that his palette has a large combination of mineral and synthetic pigments, using lithopone and lead white to prepare white layers before depositing the pictorial layer. His palette is similar to both paintings, differing only by the presence of synthetic ultramarine and umber, found only in one of the artworks. With Infrared Reflectography (IRR) it was found creative steps of the artist, such as checkering the canvas, sketching of most of the scene, correction of drafts and pentimenti. The characteristics found in this study are aligned with previous research about his work, corroborating to the definition of his artistic style.
