1. Department of Applied Chemistry, Faculty of Chemistry; University of the Basque Country (UPV/EHU); San Sebastian Spain
2. Department of Analytical Chemistry, Faculty of Science and Technology; University of the Basque Country (UPV/EHU); Leioa Spain
3. Department of Painting, Faculty of Fine Arts; University of the Basque Country (UPV/EHU); Leioa Spain
4. General Research Services (SGIker); University of the Basque Country; Leioa Spain