1. University of Vienna
2. Department of Environmental Geosciences and Environmental Science Research Network
3. 1090 Vienna
4. Austria
5. Eawag
6. Department of Process Engineering
7. 8600 Duebendorf
8. Switzerland
9. TOFWERK
10. 3600 Thun
11. Swedish University of Agricultural Sciences
12. Department of Soil and Environment
13. 75651 Uppsala
14. Sweden