1. Institute of Bioanalysis and Szentágothai Research Center; University of Pécs; Pécs Hungary
2. Department of Analytical Chemistry; Faculty of Natural Sciences; Comenius University in Bratislava; Bratislava Slovak Republic
3. University of South Bohemia in Ceske Budejovice; Faculty of Fisheries and Protection of Waters; South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses; Vodnany Czech Republic
4. Department of Analytical and Environmental Chemistry; Faculty of Sciences; University of Pécs; Pécs Hungary