1. Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600 Dübendorf, Switzerland
2. Institute
of Biogeochemistry and Pollutant Dynamics, ETH Zürich, 8092 Zürich, Switzerland
3. Federal Office for the Environment (FOEN), 3000 Bern, Switzerland
4. Swiss Center for Applied Ecotoxicology Eawag/EPFL, 8600 Dübendorf, Switzerland