- Lhiam has investigated the influence of decommissioned oil pipelines on mercury contamination of oceans. It was found that a lot of mercury from extracted oil and gas binds to the pipelines in various forms. If the pipelines remain permanently on site and corrode there, this can lead to significant contamination of the environment.
- Walter has collaborated in a study on the influence of selenium on DNA methylation.
- Bassam and Walter studied metabolites of H2S methylation in the urine of workers in an oil refinery.
- Franziska and Doris have found high concentrations of selenonein in a mushroom.