1. Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600 Dübendorf, Switzerland
2. Department of Environmental Engineering, Norwegian Geotechnical Institute, NO-0806 Oslo, Norway
3. Department of Chemistry, Norwegian University of Science and Technology (NTNU), NO-7491 Trondheim, Norway
4. Department of Environmental Science, Stockholm University, SE-106 91 Stockholm, Sweden
5. Empa – Swiss Federal Laboratories for Materials Science and Technology, Technology and Society Laboratory, 9014 St. Gallen, Switzerland