Microplastics and nanoplastics (MNPs) are present in the environment worldwide. However, there are very few studies dealing with terrestrial ecosystems so far and the concentrations or compositions of plastics in soils under different land uses are almost unknown. Further research is needed on the MNPs effects on plants or on physicochemical properties of soils.

Many trace elements are essential micronutrients, but can also act as pollutants in high concentrations. The biogeochemistry/redox chemistry and speciation of these metals in soils – the interface between geosphere – atmosphere and habitat for the biosphere – is therefore of scientific interest.

The study of stable and radiogenic metal isotopes can provide valuable information on the environmental behavior of metals. Field and laboratory experiments are conducted to gain further insight into the biogeochemistry of trace metals in soils.

• Development of methods for the determination of microplastics and nanoplastics in soil
• Microplastics/nanoplastics in soil: Impact, composition, sources, transport and aging
• Trace element biogeochemistry and element cycling in ecosystems
• Redox chemistry of trace elements
• Speciation of metals
• Biogeochemistry of stable cadmium, iron, copper, and zinc isotopes in soil and plants.
• Biogeochemistry of uranium in soil, groundwater and surface waters
• Stable and radiogenic isotope systems and trace element patterns as tracers of anthropogenic contamination and element inputs