1. Regional Development Institute, Šiauliai Academy, Vilnius University, 84 Vytauto Str., LT-76352 Šiauliai, Lithuania
2. Department of Organic Chemistry, Center for Physical Sciences and Technology, Saulėtekio Avenue 3, LT-10257 Vilnius, Lithuania
3. Department of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University, 7 Gagarina Str., 87-100 Torun, Poland
4. Department of Hydrology and Climatology, Faculty of Chemistry and Geosciences, Vilnius University, M. K. Čiurlionio Str. 21, LT-03101 Vilnius, Lithuania