Our research group focuses on organic trace substances in the environment and in water treatment. This includes the analysis, occurrence and fate of pesticides, pharmaceuticals, household and industrial chemicals as well as disinfection and oxidation byproducts. We develop and apply analytical methods with a focus on chromatography and high-resolution mass spectrometry for original chemicals and their transformation products. Transformation products are produced by simulated environmental and technical processes or electrochemical methods. The risk to humans and the environment is assessed in collaborations.