He holds a professorship at the Faculty of Biological Sciences at the Goethe University in Frankfurt/ Main.
He is particularly interested in researching the identification and evaluation of toxic compounds in complex mixtures of chemicals in the environment, particularly in multiply stressed aquatic ecosystems. His areas of expertise are in chemical screening techniques to unravel complex mixtures of contaminants in water, sediments and biota, risk assessment of these mixtures for aquatic organisms at polluted sites and in river basins on the European scale and the identification of risk drivers and sources using effect-directed analysis.
He was the coordinator of the EU project "SOLUTIONS for present and future emerging pollutants in land and water resources management" in which 39 partners from Brazil, China, Australia and from all over Europe participate (https://www.solutions-project.eu).
He is member of the Steering Committee of the “Network of reference laboratories and related organizations for monitoring and bio-monitoring of emerging environmental pollutants” (NORMAN) and member of the Society for Environmental Toxicology and Chemistry (SETAC).