Dr. Henri Stephan Schrekker, Associate Professor IV at the Institute of Chemistry of the Federal University of Rio Grande do Sul (UFRGS). He served as Vice-Director of the Institute of Chemistry and as Coordinator of the Physical Space Commission of the Institute of Chemistry of the Federal University of Rio Grande do Sul in the 2015-2019 term. He is a Research Productivity Scholar Professor at CNPq-Level 2. He currently actively participates as a Research Professor member of the APACHE Project (Preventive Conservation of Works of Art) also promoted by the European Union through the Horizon 2020 Program.