1. Department of Physical Chemistry , Faculty of Chemistry and Technology, University of Split , Ruđera Boškovića 35, HR-21000 Split , Croatia
2. Department of Chemistry , Faculty of Science, University of Zagreb , Horvatovac 102a, HR-10000 Zagreb , Croatia
3. Department of Analytical Chemistry , Faculty of Chemistry and Technology, University of Split , Ruđera Boškovića 35, HR-21000 Split , Croatia