1. Department of Analytical Environmental Chemistry, UFZ − Helmholtz Centre for Environmental Research, Permoserstrasse 15, D-04318 Leipzig, Germany
2. National Research Centre for Environmental Toxicology (Entox), The University of Queensland, 39 Kessels Road, Brisbane, QLD 4108, Australia
3. Institute of Chemistry, University of Halle-Wittenberg, Kurt-Mothes-Strasse 2, D-06120 Halle, Germany