1. R&D Center LaborQ, University of Bucharest, 4-12 Regina Elisabeta Blvd., 030018 Bucharest, Romania
2. Department of Analytical Chemistry & Physical Chemistry, University of Bucharest, 4-12 Regina Elisabeta Blvd., 030018 Bucharest, Romania
3. Institute of Chemistry, Faculty of Natural Sciences and Mathematics, “Ss Cyril and Methodius” University in Skopje, P.O. Box 162, 1000 Skopje, RN Macedonia
4. Department of Inorganic and Analytical Chemistry, University of Lodz, Tamka 12, 91-43 Lodz, Poland
5. Research Center for Environment and Materials, Macedonian Academy of Sciences and Arts, Bul. Krste Misirkov 2, 1000 Skopje, RN Macedonia