1. Environmental Analytical Chemistry, Department of Geosciences, University of Tübingen, Schnarrenbergstraße 94-96, 72076 Tübingen, Germany
2. Federal Institute for Materials Research and Testing (BAM), Division 1.1 – Inorganic Trace Analysis, Richard-Willstätter-Straße 11, 12489 Berlin, Germany
3. Federal Institute for Materials Research and Testing (BAM), Division 4.3 – Contaminant Transfer and Environmental Technologies, Unter den Eichen 87, 12205, Berlin, Germany