A5010263756- Atmospheric chemistry and aerosols
- Isotope Analysis in Ecology
- Marine and coastal ecosystems
- Toxic Organic Pollutants Impact
- Per- and polyfluoroalkyl substances research
- Marine and coastal plant biology
- Coastal wetland ecosystem dynamics
- Marine Biology and Ecology Research
- Atmospheric and Environmental Gas Dynamics
- Groundwater and Isotope Geochemistry
- Marine and Offshore Engineering Studies
- Mercury impact and mitigation studies
- Geochemistry and Elemental Analysis
- Corrosion Behavior and Inhibition
- Heavy metals in environment
- Offshore Engineering and Technologies
Federal Maritime and Hydrographic Agency of Germany
2018-2025
Universität Hamburg
2013-2015
Leibniz Institute for Baltic Sea Research
2015
Helmholtz-Zentrum Hereon
2014
Institute for Applied Soil Biology
2011
Leuphana University of Lüneburg
2009-2010
High volume air samples taken onboard several research vessels in the Atlantic Ocean, Southern and Baltic Sea as well at one land-based site close to Hamburg, Germany, 2007 2008 were analyzed for per- polyfluorinated organic compounds (PFCs). A set of neutral, volatile PFCs such fluorotelomer alcohols (FTOH) or perfluoroalkyl sulfonamides ionic nonvolatile like perfluorinated carboxylates (PFCA) sulfonates (PFSA) collected on PUF/XAD-2/PUF cartridges glass fiber filters determined using...
During the last decade offshore wind energy production has become an important source of renewable energy. To ensure safe operation during lifetime turbine, steel structures need to be protected against corrosion. This work evaluates potential metal emissions and environmental impacts from galvanic anodes used for corrosion protection farms (OWFs) by applying a novel multi-tracer approach. A total 235 surface water samples different German North Sea OWFs were taken between 2016 2022 analyzed...
Abstract. Coastal zones are important source regions for a variety of trace gases, including halocarbons and sulfur-bearing species. While salt marshes, macroalgae phytoplankton communities have been intensively studied, little is known about gas fluxes in seagrass meadows. Here we report results newly developed dynamic flux chamber system that can be deployed intertidal areas over full tidal cycles allowing highly time-resolved measurements. The CO2, methane (CH4) range volatile organic...
To evaluate potential metal emissions from offshore wind farms (OWFs), 215 surface sediment samples different German North Sea OWFs taken between 2016 and 2022 were analyzed for their mass fractions of metals isotopic composition Sr. For the first time, this study provides large-scale elemental data previously proposed galvanic anode tracers Cd, Pb, Zn, Ga In. Results show that legacy pollutants Pb Zn mostly within known variability sediments. At current stage In as well Ga/In ratios do not...
Abstract. The isotopic composition of volatile organic compounds (VOCs) can provide valuable information on their sources and fate not deducible from mixing ratios alone. In particular the reported carbon stable isotope chloromethane bromomethane different cover a δ13C-range almost 100‰ making very promising tool for studying biogeochemistry these compounds. So far, determination C1 C2 halocarbons others than is hampered by low ratios. order to determine with as 1 pptv (i) field suitable...
Abstract. In this study we report fluxes of chloromethane (CH3Cl), bromomethane (CH3Br), iodomethane (CH3I), and bromoform (CHBr3) from two sampling campaigns (summer spring) in the seagrass dominated subtropical lagoon Ria Formosa, Portugal. Dynamic flux chamber measurements were performed when patches either air-exposed or submerged. Overall, observed highly variable meadows attributed them to diurnal cycles, tidal effects, variety possible sources sinks meadows. The highest emissions with...
Environmental context.Perfluorinated compounds are man-made chemicals of emerging environmental concern because their global distribution in water, air and biota. We investigate the these surface water Baltic Sea, a unique ecosystem world’s largest body brackish water. The observed contamination was same order magnitude as classical persistent organic pollutants oceans, decreased with lower population density Sea catchments. Abstract.Poly- perfluorinated (PFCs) concern. Except for very few...
Abstract. Coastal zones are important source regions for a variety of trace gases including halocarbons and sulphur-bearing species. While salt-marshes, macroalgae phytoplankton communities have been intensively studied, little is known about gas fluxes in seagrass meadows. Here we report results newly developed dynamic flux chamber system that can be deployed intertidal areas over full tidal cycles allowing high time resolved measurements. The measured this study included carbon dioxide...
Environmental context Once released to the atmosphere, halocarbons are involved in key chemical reactions. Stable carbon isotope measurements of can provide valuable information on their sources and fate atmosphere. Here, we report δ13C values 13 polyhalomethanes from brown algae, which may a basis for inferring future studies. Abstract Halocarbons important vectors reactive halogens where latter participate several processes. An improved understanding biogeochemical controls...
Abstract. The isotopic composition of volatile organic compounds (VOCs) can provide valuable information on their sources and fate not deducible from mixing ratios alone. In particular the reported carbon stable isotope chloromethane bromomethane different cover a δ13C-range almost 100‰ making very promising tool for studying biogeochemistry these compounds. So far, determination C1 C2 halocarbons others than is hampered by low ratios. order to determine with as 1 pptv (i) field suitable...
Abstract. Here we report fluxes of chloromethane (CH3Cl), bromomethane (CH3Br), iodomethane and bromoform (CHBr3) from two sampling campaigns (summer spring) in the seagrass dominated subtropical lagoon Ria Formosa, Portugal. Dynamic flux chamber measurements were performed when patches air-exposed submerged. Overall, observed highly variable meadows attributed them to diurnal cycles, tidal effects, variety possible sources sinks meadows. Highest emissions with up 130 nmol m−2 h−1 for CH3Br...