1. Charles University; Faculty of Science; Department of Analytical Chemistry; UNESCO Laboratory of Environmental Electrochemistry; Hlavova 8 128 43 Prague 2 Czech Republic
2. J. Heyrovský Institute of Physical Chemistry of the AS CR, v.v.i.; Dolejškova 3 182 23 Prague 8 Czech Republic
3. National and Kapodistrian University of Athens; Department of Chemistry; Laboratory of Analytical Chemistry; Panepistimiopolis, Zografou 157 71 Athens Greece