Dr. Annika Jahnke
Annika Jahnke completed her Ph.D. in Environmental Chemistry at the University of Lüneburg, studying the occurrence and distribution of polyfluorinated alkyl substances (PFAS) in the marine atmosphere. She went on to work as a postdoctoral researcher and research fellow (“Foass”) at the Department of Applied Environmental Science (ITM) at Stockholm University. In August 2014, she joined the UFZ Leipzig.
Annika´s special interest is in the development of novel methodologies to investigate chemical activity (fugacity) in the environment. The basic idea is to use the same material (i.e. the silicone polydimethylsiloxane, PDMS) as a “chemometer”, i.e. a common and well-defined reference phase for passive equilibrium sampling in different phases. The concentrations of chemicals in the silicone at equilibrium with the phases can then be used to investigate the thermodynamic status of a system. The approach has been successfully used for biota and sediment from the Baltic Sea and a Swedish lake and gave novel insight into bioaccumulation. Other applications are under development to study (i) thermodynamic bioaccumulation in aquatic ecosystems, (ii) internal exposure and effects in tissues of marine mammals, (iii) non-invasive tools to assess human exposure and (iv) broadening the chemical universe in trace analysis and linking the measured concentrations to observed effects. For more info, see www.ufz.de/chemo-risk. In addition, Annika is interested in microplastic in the environment.