1. Department of Agricultural and Environmental Chemistry , University of Agriculture in Krakow , al. A. Mickiewicza 21, 31-120 Kraków , Poland , phone +48 12 662 43 46, fax +48 12 662 43 41, email: krzysztof.gondek@urk.edu.pl
2. Institute of Agricultural Engineering and Informatics , University of Agriculture in Krakow , ul. Balicka 116B, 30-149 Kraków , Poland
3. Department of Environmentalistics and Natural Resources , Mendel University in Brno , Zemědělská 1/1665, 613 00 Brno , Czech Republic
4. Faculty of Chemical and Process Engineering , Warsaw University of Technology , ul. L. Waryńskiego 1, 00-645 Warszawa , Poland