Short CV/Education and training

  • 1983
    Abitur (A-levels)

  • 1983 – 1987
    Studied chemistry at the University of Greifswald, Germany

  • 1988
    Diplom degree from the University of Rostock, Germany

  • 1989 – 1991
    PhD student at the University of Rostock

  • 1992 – 1997
    Research project assistant at the Institute for Baltic Sea Research, marine chemistry section, organic pollutants project group

  • 1995
    Visiting researcher at the German Research Centre for Environmental Health, Munich (Neuherberg), Germany, Institute of Ecological Chemistry

  • 1997 – 2000
    Habilitation (postdoctoral qualification) fellowship from the Mecklenburg-Western Pomeranian Ministry of Education (HSP III)

  • 2000 – 2001
    Research associate at the University of Rostock, Chemistry Department

  • 2001 – 2004
    Heisenberg Fellowship from the German Research Foundation (DFG)

  • 2004 – 2005
    Visiting researcher at the National Research Centre of Environmental Toxicology (EnTox) in Brisbane, Australia

  • 2005 – 2007
    Resumption of the Heisenberg Fellowship at the Leibniz Institute for Baltic Sea Research, Warnemünde, Germany

  • 2007
    W2 professor of environmental analysis and ecotoxicology at Hamburg University of Applied Sciences (HAW), Faculty of Life Sciences

Selected publications

  • Witt, G., Lang, S.-C., Ullmann, D., Schaffrath, G., Schulz-Bull, D., Mayer. P. (2013). A passive sampler for in situ measurements of freely dissolved concentrations of hydrophobic organic chemicals in sediments. Environ. Sci. Technol. 2013, 47, 7830−7839.

  • Mayer, P. Parkerton, T.F., Adams, R.G. Cargill, J.G. Gan, J., Gouin, T., Gschwend, P.M., Hawthorne, S.B., Helm, P., Witt, G., You, J., Escher B.I. (2014). Passive sampling methods for contaminated sediments: Scientific rationale supporting use of freely dissolved concentrations. Integrated Environmental Assessment and Management Volume 10, Number 2pp. 197–209.

  • S-C Lang, Andrew Hursthouse , P Mayer, D Kötke, I Hand, D Schulz-Bull, G Witt (2015). Equilibrium passive sampling as a tool to study polycyclic aromatic hydrocarbons in Baltic Sea sediment pore-water systems. Marine Pollution Bulletin 101 (2015) 296–303.

  • D. Gilbert, G. Witt, F. Smedes, and P. Mayer (2016). Polymers as Reference Partitioning Phase: Polymer Calibration for an Analytically Operational Approach To Quantify Multimedia Phase Partitioning, Anal. Chem. 88 (11), pp 5818–5826.

  • A. Jahnke, P. Mayer, S. Schäfer, G. Witt, N. Haase, Beate I. Escher (2016). Strategies for Transferring Mixtures of Organic Contaminants from Aquatic Environments into Bioassays. Environmental Science and Technology. Environ. Sci. Technol., 2016, 50 (11), pp 5424–5431. DOI: 10.1021/acs.est.5b04687.

  • A. Jahnke, G. Witt, S. Schäfer, N. Haase,and B. I. Escher (2016). Combining Passive Sampling with Toxicological Characterization of Complex Mixtures of Pollutants from the Aquatic Environment. Adv. Biochem. Eng. Biotechnol. DOI: 10.1007/10_2015_5014.

  • Witt,G.: Polycyclic aromatic hydrocarbons in water and sediment of the Baltic Sea. In: Mar. Pollut. Bull. 31, 1995. pp. 237-248. Cited in Scopus (158).

  • Witt, G., Trost, E.: Polycyclic aromatic hydrocarbons in sediments of the Baltic Sea and the German coastal waters. In: Chemosphere 38, 1999. pp. 1603-1614. Cited in Scopus (43).

  • Witt, G.: Occurrence and transport of polycyclic aromatic hydrocarbons in the water bodies of the Baltic Sea Marine. In: Chemistry 79(2), 2002. pp. 49-66. Cited in Scopus (41).

  • Witt, G., Leipe, T., Emeis, K.-C.: Using fluffy layer material to study the fate of particle bound organic pollutants in the southern Baltic Sea. In: Environ. Sci. Technol. 35, 2001. pp. 1567-1573.

  • Witt, G., Trost E.: Spatial and seasonal distribution of triazines in sediments of the Pomeranian Bight. In: Ocean Dynamics 50(4), 1998. pp. 365-369.

  • Leipe, T. et al.: Ecotoxicity assessment of natural attenuation effects at a historical dumping site in the western Baltic Sea. In: Marine Pollution Bulletin 50, 2005. pp. 446-459.

  • Witt, G., Siegel, H.: The Consequences of the Oder Flood in 1997 on the Distribution of Polycyclic Aromatic Hydrocarbons (PAHs) in the Oder River Estuary (1999). In: Marine Pollution Bulletin 40, 2000. pp. 1124-1131.

  • Witt, G. et al.: Matrix solid phase microextraction to measure freely dissolved concentrations and chemical activities of PAHs in sediment cores from the western Baltic Sea. In: Chemosphere 74, 2009. pp. 522-529.

  • Witt, G., Matthäus, W.: The impact of Salt Water Inflows on the distribution of PAHs in the deep water of the Baltic Sea. In: Marine Chemistry 74, 2001. pp. 279-301.

  • Liehr, G.A. et al.: The ocean quadhog Arctica Islandica L.: a bioindicator for contaminated sediments. In: Marine Biology 147, 2001. pp. 671-679.

  • Witt, G. et al.: Using solid-phase microextraction to evaluate the role of different carbon matrices in the distribution of PAHs in sediment-porewater systems of the Baltic Sea. In: Journal of Soils and Sediments 10, 2010. pp. 1388-1400.



Complete list of publications

Selected projects

  • Determining the bioavailability and ecotoxicological effect of persistent organic pollutants in sediment-water interfaces by means of a to-be-developed in-situ sampling system for measuring the freely dissolved interstitial water concentration on the basis of solid-phase microextraction, funding organisation: German Research Foundation (DFG)

  • Ecotoxicity of polycyclic aromatic hydrocarbons in the sediments and fluffy-layer material of the Baltic Sea (ÖKOTOX), funding organisation: DFG

  • Investigation of the mobility of selected polycyclic aromatic hydrocarbons (PAHs) of pyrogenic and petrogenic origin in the sediment/interstitial water of surface sediments (MOBIL), funding organisation: DFG

  • Ecotoxicological investigation in three regions of the German Baltic Sea coast, funding organisation: DFG

  • Entry of polycyclic aromatic hydrocarbons into the Oder River and its estuary (ODER), funding organisation: DFG

Membership in scientific bodies/juries

  • Member of the research board, Faculty of Life Sciences, Hamburg University of Applied Sciences

  • Director of research in environmental analysis and ecotoxicology in the Faculty of Life Sciences, Hamburg University of Applied Sciences

  • Member of the scientific advisory board for quality assurance in undergraduate and continuing education, University of Rostock, Germany, since 2006

  • Chairperson of the examination committee for continuing distance education in environmental protection (Master's course) at the University of Rostock, 2005 - 2007

  • Member of the German Institute for Standardisation (DIN) consortium on marine biotests, since 2000

  • Helsinki Commission to protect the marine environment of the Baltic Sea (HELCOM), coordinator of Baltic Sea monitoring of petroleum hydrocarbons from the German side as commissioned by the Federal Maritime and Hydrographic Agency of Germany (BSH), 1992 - 1999

Additional qualifications

  • University teaching qualifications

  • Supervision of Jugend forscht (German Youth Research) theses at the state and national level; awards for supervised school pupils:

  • 3rd prize in the national competition, chemistry division, 2010

  • 1st prize in Jugend forscht, chemistry division, state competition of Hamburg, Germany, 2009 and 2010

  • 1st prize in Jugend forscht state competition, biology division, Mecklenburg/Western Pomerania, Germany


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