1. Department of Environmental Chemistry, Swiss Federal Institute of Aquatic Science and Technology (Eawag), 8600 Dübendorf, Switzerland
2. Institute of Biogeochemistry and Pollutant Dynamics, ETH Zürich, 8092 Zürich, Switzerland
3. Department of Chemistry, University of Zürich, 8057 Zürich, Switzerland
4. RECETOX, Masaryk University, 625 00 Brno, Czech Republic