Klima Hero Istock-1218578263 Alexey Fedoren

Dr. Hanna Joerss

Hana Joerss

Dr. Hanna Joerss

Organic Environmental Chemistry


Phone: +49 (0)4152 87-2353

Fax: +49 (0)4152 87-2332

E-mail contact

Deputy Head of Department

My research focuses on the development and application of analytical methods for the determination of organic pollutants in the marine environment. During my PhD, I investigated sources, transport and sinks of per- and polyfluoroalkyl substances (PFAS). In particular, I focused on the transition from banned PFAS to replacement compounds and upcoming analytical techniques addressing the entire group of contaminants. My current postdoctoral research deals with developing and applying high-resolution mass spectrometry-based approaches to identify novel pollutants of concern.

My expertise covers the following areas:

  • Ultra-trace analysis of organic pollutants.
  • Mass spectrometry (LC-MS/MS, LC-HRMS).
  • Suspect screening of organic contaminants in environmental samples.
  • Sum parameters for the analysis of PFAS (Total Oxidizable Precursor Assay).
  • Sampling and analysis of seawater, river water and sediment samples.
  • Since 2020 Postdoctoral Researcher
    Helmholtz-Zentrum Hereon, Environmental Chemistry, today Helmholtz-Zentrum Hereon, Institute of Coastal Environmental Chemistry
  • 2016 - 2020 PhD Student
    Helmholtz-Zentrum Hereon, Environmental Chemistry
  • 2013 - 2016 Analytical Services Manager
    Eurofins GfA Lab Service, Hamburg
  • 2012 - 2013 “Practical Year” for Food Chemists, State Examination
    State Agency for Nature, Environment and Consumer Protection North Rhine-Westphalia
  • 2007 - 2012 Bachelor and Master of Science in Food Chemistry
    University of Münster
  • 2006 - 2007 International Voluntary Service
    Reuth Medical Center, Tel Aviv, Israel
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