Non-Destructive and portable analyses helping the study and conservation of a Saraceni copper plate painting in the São Paulo museum of art - Rodriguez, S. Hennen; Appoloni, Carlos Roberto; Campos, Pedro Herzilio Ottoni Viviani de; Gonçalves, B.; Kajiya, Elizabeth Alfredi de Mattos; Molari, R.; Rizzutto, Márcia de Almeida; Winter, C. (Microchemical Journal, 2020)