1. Department of General and Inorganic Chemistry FCHT University of Pardubice Studentská 573 532 10 Pardubice Czech Republic
2. Department of Inorganic and Analytical Chemistry Budapest University of Technology and Economics Szent Gellért tér 4 H-1111 Budapest Hungary
3. Department of Analytical Chemistry FCHT University of Pardubice Studentská 573 532 10 Pardubice Czech Republic