A5045318374- Heavy metals in environment
- Microplastics and Plastic Pollution
- Recycling and Waste Management Techniques
- Geochemistry and Elemental Analysis
- Mercury impact and mitigation studies
- Geochemistry and Geologic Mapping
- Isotope Analysis in Ecology
- Analytical chemistry methods development
- Effects and risks of endocrine disrupting chemicals
- Geology and Paleoclimatology Research
- Methane Hydrates and Related Phenomena
- Radioactive element chemistry and processing
- Arctic and Antarctic ice dynamics
- Atmospheric and Environmental Gas Dynamics
- Water Quality Monitoring Technologies
- Radioactive contamination and transfer
- Marine and coastal ecosystems
- Fish Ecology and Management Studies
- Biosensors and Analytical Detection
- Ocean Acidification Effects and Responses
- Hydrogen Storage and Materials
- Toxic Organic Pollutants Impact
- Aquatic Invertebrate Ecology and Behavior
- Municipal Solid Waste Management
- Extraction and Separation Processes
Helmholtz-Zentrum Hereon
2017-2025
Institute of Marine and Coastal Research
2020-2021
Universität Hamburg
2015-2019
Due to an assumed lack of anionic binding sites (most plastics are non-polar), scientists long considered virgin particulate inert towards metal ions. However, we proved significant sorption microplastics at neutral pH and release in a solution mimicking gastrointestinal chemistry serving as proof-of-principle for environmental human bioavailability. Competitive ion-exchange incubation experiments comprised 55 metals metalloids. Fast kinetics were observed with 45 %–75 % As, Be, Bi, Cr, Fe,...
15 filtration samples were collected at eight locations onboard the RV Sonne (cruise SO279 in 2020) from 6 m water depth using a fractionated stainless-steel unit. The size fraction > 300 μm was visually examined and potential microplastic particles analyzed by ATR-FTIR spectroscopy. treatment of class 20 < d based on enzymatic-oxidative microwave-assisted "one-pot" matrix digestion conjunction with analysis microplastics time-efficient LDIR imaging. Total number concentrations ranged 47 to...
Photodegradation of plastic consumer products is known to accelerate weathering and facilitate the release chemicals particles into aquatic environment. However, these processes are complex. In our presented pilot study, eight were leached in distilled water under strong ultraviolet (UV) light simulating months Central European climate compared their respective dark controls (DCs). The leachates formed exploratorily characterized using a range chemical analytical tools describe degradation...
The impact of offshore constructions on the marine environment is unknown in many aspects. application Al- and Zn-based galvanic anodes as corrosion protection results continuous emission inorganic matter (e.g. >80 kg Al-anode material per monopile foundation year) into environment. To identify tracers for emissions from wind structures, anode materials (Al-based Zn-based) were characterized their elemental isotopic composition. An acid digestion analysis method Al Zn alloys was adapted...
Substantial efforts have been undertaken to isolate and characterize plastic contaminants in different sample matrices the last years as ubiquitous presence of particulate environment has become evident. In comparison, particles 90%. a proof-of-principle setup, it was demonstrated that operating two continuous flow centrifuges sequentially at rotational speeds bears potential enable size- density-selective sampling colloidal fraction. A significant fraction spiked nanoplastic (76% ± 5% (uc))...
Potentially hazardous particles from paints and functional coatings are an overlooked fraction of microplastic (MP) pollution since their accurate identification quantification in environmental samples remains difficult. We have applied the most relevant techniques field analysis for suitability to chemically characterize anti-corrosion containing a variety polymer binders (LDIR, Raman FTIR spectroscopy, Py-GC/MS) inorganic additives (ICP-MS/MS). present basis possible toolbox study release...
Abstract Primary production is an important driver of marine carbon storage. Besides the major nutrient elements nitrogen, phosphorus, and silicon, primary also depends on availability nutrient-type metals (e.g., Cu, Fe, Mo) absence toxicologically relevant Ni, Pb). Especially in coastal oceans, storage export to open ocean highly variable influenced by anthropogenic eutrophication pollution. To model future changes processes, a solid baseline metal concentrations crucial. The North Sea...
The scientific and public interest regarding environmental pollution with microplastic has considerably increased within the last 15 years. Nevertheless, up to now there is no widely applied standard operation procedure for sampling, resulting in a lack of inter-study comparability. In addition, many studies on occurrences do not indicate sound methodological validation methods procedures. This study presents an alternative volume-reduced sampling technique sample entire load suspended...
One group of elements attracting more and attention are so-called technology-critical (TCEs). In comparison with legacy pollutants, the anthropogenic impact TCEs on environment might still be minor, but various applications introduce them to most remote places in world including marine environment. area prone pollution is Baltic Sea, partly due lack water exchange North Sea. this study, a sediment core from German Sea was used analyze total 42 elemental mass fractions. Based radiometric...
Abstract. The west Greenland shelf is a dynamic marine environment influenced by various physicochemical and biological processes. This study provides an overview of the main factors affecting distribution macronutrients, carbonate system parameters, dissolved trace elements during late summer. Key drivers include major ocean currents, melting sea ice, terrestrial freshwater runoff, each uniquely contributing to cycling spatial chemical constituents. Major such as southward-moving Baffin...
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...
The west Greenland shelf is a dynamic marine environment influenced by various physicochemical and biological processes. We captured high-resolution, large-scale snapshot of water column parameters across the Davis Strait between 64&#176;N 71&#176;N during July 2021. This study provides an overview main factors affecting distribution macronutrients (NOx&#160;=&#160;nitrate&#160;+&#160;nitrite, silicate, phosphate), carbonate system (alkalinity (AT), dissolved...
The presence of microplastic (MP) particles in aquatic environments raised concern about possible enrichment organic and inorganic pollutants due to their specific surface chemical properties. In particular the role metals within this context is still poorly understood. Therefore, aim work was develop a fully validated acid digestion protocol for metal analysis different polymers, which prerequisite study such interactions. proposed using six certified reference materials size range...
Determination of elemental mass fractions in sediments plays a major role evaluating the environmental status aquatic ecosystems.
For commonly applied microplastic sampling approaches based on filtration, high throughput and no size-discrimination are conflicting goals. Therefore, we propose two efficient centrifugal separators for small sampling, namely the utilization of a hydrocyclone as well continuous flow centrifuge. Thorough method optimization was followed by application in an extensive study to investigate separators' retention behavior particulate plastics from estuarine waters. Microplastic concentrations...
The multi element ICP-MS/MS method to analyze technologically critical elements (TCEs) in sediment digests using N<sub>2</sub>O as a reaction gas.
Concentrations of elements in the aquatic environment are a key parameter for various scientific fields such as biogeochemistry, biology and environmental science. Within this context, community asks new analytical protocols to be able quantify more periodic table. Therefore, requirements aqueous reference materials have increased drastically. Even though wide variety CRMs different water matrices available, certified values many (e.g., rare earth (REE), technology‐critical elements, Ga In,...
The North Sea and its coastal zones are heavily impacted by anthropogenic activities, which has resulted in significant chemical pollution ever since the beginning of industrialization Europe during 19th century. In order to assess Anthropocene, natural archives, such as sediment cores, can serve a valuable data source reconstruct historical emission trends verify effectiveness changing environmental legislation. this study, we investigated 90 contaminants covering inorganic 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...