TY - JOUR A1 - Jegel, O. A1 - Pfitzner, F. A1 - Gazanis, A. A1 - Oberländer, J. A1 - Pütz, E. A1 - Lange, M. A1 - von der Au, Marcus A1 - Meermann, Björn A1 - Mailänder, V. A1 - Klasen, A. A1 - Heermann, R. A1 - Tremel, W. T1 - Transparent polycarbonate coated with CeO2 nanozymes repel Pseudomonas aeruginosa PA14 biofilms N2 - Highly transparent CeO2/polycarbonate surfaces were fabricated that prevent adhesion, proliferation, and the spread of bacteria. CeO2 nanoparticles with diameters of 10–15 nm and lengths of 100–200 nm for this application were prepared by oxidizing aqueous dispersions of Ce(OH)3 with H2O2 in the presence of nitrilotriacetic acid (NTA) as the capping agent. The surface-functionalized water-dispersible CeO2 nanorods showed high catalytic activity in the halogenation reactions, which makes them highly efficient functional mimics of haloperoxidases. These enzymes are used in nature to prevent the formation of biofilms through the halogenation of signaling compounds that interfere with bacterial cell–cell communication (“quorum sensing”). Bacteria-repellent CeO2/polycarbonate plates were prepared by dip-coating plasma-treated polycarbonate plates in aqueous CeO2 particle dispersions. The quasi-enzymatic activity of the CeO2 coating was demonstrated using phenol red enzyme assays. The monolayer coating of CeO2 nanorods (1.6 µg cm−2) and the bacteria repellent properties were demonstrated by atomic force microscopy, biofilm assays, and fluorescence measurements. The engineered polymer surfaces have the ability to repel biofilms as green antimicrobials on plastics, where H2O2 is present in humid environments such as automotive parts, greenhouses, or plastic containers for rainwater. KW - CeO2 KW - Nanorods KW - Nanomaterial PY - 2022 DO - https://doi.org/10.1039/D1NR03320D VL - 14 IS - 1 SP - 86 EP - 98 PB - Royal Society of Chemistry AN - OPUS4-55271 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meermann, Björn T1 - Single cell ICP-ToF-MS as a powerful tool in environmental and material research N2 - Materials are key for our modern communities. In particular metals play important roles in all areas of our daily life - from building materials to high tech products. Due to the increasing consumption of metals and corresponding waste production, an elevated release into the environment takes place. Furthermore, metals in direct contact with the environment undergo corrosion leading to a release into the (aquatic) environment. Thus, lifespan of products/buildings are substantially reduced – hence unnecessary economic costs arise. Thus, research in this regard is needed within the force field of metal/material - environment. Evaluating the environmental impact of materials as well as developing “safe” materials, new analytical methods are highly needed. One promising powerful tool is single cell-ICP-ToF-MS for multi-elemental analysis on a single cell/organism level. Within this presentation the concept, strength as well as challenge of single cell-ICP-MS are briefly introduced. Two application examples are presented: (i) assessing the environmental impact of metals and (ii) the impact of the environment on metal-based materials and the derivation of potential environmental-friendly material protection strategies. These applications highlight the strength of new analytical approaches to explore the durability and safety of newly developed materials. Thus, analytical chemistry is one corner stone to transformation of modern society into circular economy (CEco). (i) Diatoms are located at the bottom of the food chain. Thus, toxicological relevant metals taken up by diatoms possibly accumulate within the food web causing harmful effects. Diatoms are common test system in ecotoxicology. To investigate potential metal uptake and effects, we developed an on-line single cell-ICP-ToF-MS approach for multi-elemental diatom analysis. Our approach is a new potential tool in ecotoxicological testing for metal-based materials. (ii) Next to classical corrosion processes, microorganisms are responsible for so called microbially influenced corrosion (MIC). MIC is a highly unpredictable process relying on interaction pathways between cells and the metal surface. Sheding light on MIC processes and derivate potential protection strategies, we applied single cell-ICP-ToF-MS for MIC research on a single bacteria/archaea level. It turned out that microorganism are taking up particular metals from alloys - thus, single bacteria-ICP-ToF-MS will enable development of corrosion protection strategies. T2 - SCIX 2022 CY - Cincinnati, OH, USA DA - 02.10.2022 KW - Single cell-ICP-ToF-MS KW - Algae KW - MIC PY - 2022 AN - OPUS4-56542 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Busche, Steffen A. A1 - Vigarani, Giulia A1 - Retzmann, Anika A1 - Meermann, Björn A1 - Börner, Hans G. T1 - Heavy metal on stage: Making ion-exchange resin selective by peptide tetrazine-norbornene ligation N2 - The challenge of recycling metal salt-contaminated wastewater is more relevant than ever, and cost-effective materials for specific ion-binding are required. A generic route to functionalize a macroporous polystyrene ion-exchange resin (LR-NH2) via chemoselective inverse electron-demand Diels-Alder (IEDDA) ligation is demonstrated. The resin is modified using accessible endo-/exo-5-norbornene-2-carboxylic acid (Nb-COOH) and a set of tetrazine-functionalized 5mer peptides based on sequence variations of the literature known Cu2+ binding domain HGGGW is employed for the IEDDA ligation. The resulting peptide-functionalized resins (LR-Pz-Peptides) are studied for Cu2+ binding to correlate ion-binding capacity with sequence properties by single bead analysis of metal amounts via inductively-coupled plasma mass spectrometry (ICP-MS). The complexation preferences are demonstrated and utilized for specific binding of Cu2+ versus Ni2+ from 1:1 salt mixture as a model system. Enrichment factors of up to 305 could be realized, which might open the potential for applications in metal recycling or waste water purification. KW - Heavy metals KW - Ion exchange resins KW - Analysis PY - 2024 DO - https://doi.org/10.1016/j.polymer.2023.126608 SN - 0032-3861 VL - 291 SP - 1 EP - 12 PB - Elsevier Ltd. AN - OPUS4-60756 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Zweigle, Jonathan A1 - Simon, Fabian A1 - Meermann, Björn A1 - Zwiener, Christian T1 - Can Qualitative Nontarget Data Be Indicative of PFAS Contamination? First Evidence by Correlation with EOF in Environmental Samples N2 - We correlated nontarget screening (NTS) features and extractable organic fluorine (EOF) data for PFAS analysis in environmental samples. Soils, sediments, and ashes from different locations (Germany, France, and Lithuania) (n = 34) were analyzed via liquid chromatography-high-resolution mass spectrometry and high-resolution continuum source-graphite furnace molecular absorption spectrometry. NTS feature prioritization based on mass to carbon (m/C) and mass defect to carbon (MD/C) ratios was applied to discriminate potential PFAS features from common co-extracted organic matrix. Our results show a high correlation between quantitative EOF and the prioritized feature number (R2 = 0.87; rPearson = 0.93) and the total peak area of prioritized features (R2 = 0.97; rPearson = 0.98), while commonly applied MD ranges for filtering showed much weaker correlation with EOF. The observed correlations in PFAS-contaminated samples highlight that MD/C−m/C prioritization is associated with a good indication of the overall PFAS burden as evidenced by EOF. Also, semiquantitative data can be extracted as shown by EOF versus prioritized peak areas. The correlations indicate that weakly fluorinated compounds were negligible and that the EOF was mostly composed of highly fluorinated substances. Our method features the potential to automatically screen large NTS data sets for potential PFAS, determine the contribution of PFAS to EOF, and provide preliminary estimates of the overall PFAS burden. KW - PFAS KW - Non-target Screening KW - Sum parameter PY - 2024 DO - https://doi.org/10.1021/acs.estlett.4c00442 SN - 2328-8930 SP - 1 EP - 6 PB - American Chemical Society (ACS) AN - OPUS4-60754 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Breuninger, Esther S. A1 - Tolu, Julie A1 - Aemisegger, Franziska A1 - Thurnherr, Iris A1 - Bouchet, Sylvain A1 - Mestrot, Adrien A1 - Ossola, Rachele A1 - McNeill, Kristopher A1 - Tukhmetova, Dariya A1 - Vogl, Jochen A1 - Meermann, Björn A1 - Sonke, Jeroen E. A1 - Winkel, Lenny H. E. T1 - Marine and terrestrial contributions to atmospheric deposition fluxes of methylated arsenic species N2 - Arsenic, a toxic element from both anthropogenic and natural sources, reaches surface environments through atmospheric cycling and dry and wet deposition. Biomethylation volatilizes arsenic into the atmosphere and deposition cycles it back to the surface, affecting soil-plant systems. Chemical speciation of deposited arsenic is important for understanding further processing in soils and bioavailability. However, the range of atmospheric transport and source signature of arsenic species remain understudied. Here we report significant levels ofmethylated arsenic in precipitation, cloudwater and aerosols collected under free tropospheric conditions at Pic du Midi Observatory (France) indicating long-range transport, which is crucial for atmospheric budgets. Through chemical analyses andmoisture source diagnostics, we identify terrestrial and marine sources for distinct arsenic species. Estimated atmospheric deposition fluxes of methylated arsenic are similar to reported methylation rates in soils, highlighting atmospheric deposition as a significant, overlooked source of potentially bioavailable methylated arsenic species impacting plant uptake in soils. KW - Arsenic KW - Speciation KW - Fluxes KW - Marine KW - Terrestrial KW - Sulfur isotopes PY - 2024 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-615551 DO - https://doi.org/10.1038/s41467-024-53974-z SN - 2041-1723 VL - 15 IS - 1 SP - 1 EP - 13 PB - Springer Science and Business Media LLC AN - OPUS4-61555 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meermann, Björn T1 - Analytical Approaches for PFAS Sum-parameter Analysis – From Materials to Environment N2 - PFAS sind emerging pollutants und sind omnipräsent – sowohl in vielen Produkten als auch in der Umwelt. Aufgrund der Vielzahl an verschiedenen Verbindungen werden dringend neue Analytische Methoden zum Nachweis der PFAS benötigt. Im Rahmen meines eingeladenen Vortrags werden neue elementanalytische Summenparameterverfahren, die in meinem Fachbereich entwickelt wurden, vorgestellt. T2 - Analytisches Seminar Uni Duisburg Essen CY - Duisburg, Germany DA - 26.02.2024 KW - PFAS KW - HR-CS-GFMAS KW - Sum parameter PY - 2024 AN - OPUS4-62240 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meermann, Björn T1 - Analytical Approaches for PFAS Sum-parameter Analysis – From Materials to Environment N2 - PFAS sind emerging pollutants und sind omnipräsent – sowohl in vielen Produkten als auch in der Umwelt. Aufgrund der Vielzahl an verschiedenen Verbindungen werden dringend neue Analytische Methoden zum Nachweis der PFAS benötigt. Im Rahmen meines eingeladenen Vortrags werden neue elementanalytische Summenparameterverfahren, die in meinem Fachbereich entwickelt wurden, vorgestellt. T2 - GDCh Kolloquium CY - Freiberg, Germany DA - 29.05.2024 KW - PFAS KW - HER-CS-GFMAS KW - Evolution of pollution PY - 2024 AN - OPUS4-62241 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meermann, Björn T1 - Element Analytical Methods for a Sustainable Transformation of our Society N2 - Ressourcenknappheit benötigt alternative Strategien, um auch nachfolgenden Generationen eine lebenswerte Welt zu erhalten und einen guten Lebensstandard zu gewährleisten. Ein wesentlicher Beitrag hierzu wird die Transformation unserer Gesellschaft hin zu einer Kreislaufwirtschaft (CEco) sein. Bisher ist unsere Wirtschaft nicht dahingehend ausgelegt – ein wesentlicher Beitrag muss seitens der Analytischen Chemie kommen – nur hierüber können Qualitätsstandards und –kontrolle gewährleistet werden Im Rahmen meines eigeladenen Vortrags werden elementanalytisch Methoden, die in meinem Fachbereich entwickelt/angewendet werden, für eine CEco vorgestellt. T2 - Analytica Conference CY - Munich, Germany DA - 11.04.2024 KW - PFAS KW - HR-CS-GFMAS KW - Sum parameter PY - 2024 AN - OPUS4-62242 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meermann, Björn T1 - Analytical Approaches for PFAS Sum-parameter Analysis – From Materials to Environment N2 - PFAS sind emerging pollutants und sind omnipräsent – sowohl in vielen Produkten als auch in der Umwelt. Aufgrund der Vielzahl an verschiedenen Verbindungen werden dringend neue Analytische Methoden zum Nachweis der PFAS benötigt. Im Rahmen meines eingeladenen Vortrags werden neue elementanalytische Summenparameterverfahren, die in meinem Fachbereich entwickelt wurden, vorgestellt. T2 - Wiley - Free Virtual Event –The Forefront of Environmental Toxicology CY - Online meeting DA - 25.09.2024 KW - HR-CS-GFMAS KW - PFAS KW - Environment PY - 2024 AN - OPUS4-62244 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meermann, Björn T1 - Discrete element and isotope analytical methods for a sustainable transformation of our society N2 - Ressourcenknappheit benötigt alternative Strategien, um auch nachfolgenden Generationen eine lebenswerte Welt zu erhalten und einen guten Lebensstandard zu gewährleisten. Ein wesentlicher Beitrag hierzu wird die Transformation unserer Gesellschaft hin zu einer Kreislaufwirtschaft (CEco) sein. Bisher ist unsere Wirtschaft nicht dahingehend ausgelegt – ein wesentlicher Beitrag muss seitens der Analytischen Chemie kommen – nur hierüber können Qualitätsstandards und –kontrolle gewährleistet werden. Im Rahmen meines eigeladenen Vortrags werden elementanalytisch Methoden, die in meinem Fachbereich entwickelt/angewendet werden, für eine CEco vorgestellt. T2 - Summer school CY - Poland DA - 31.07.2024 KW - Elemental analysis KW - Division 1.1 KW - Environment - material PY - 2024 AN - OPUS4-62245 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meermann, Björn T1 - Was macht eigentlich der AK Meermann an der BAM in Berlin? N2 - Der Vortrag wurde im Rahmen des PhD Seminars in Hohenroda de AK Sep. Sciences der GDCh gehalten.Hierin habe ich die Forschungsschwerpunkte meines Fachbereichs vorgestellt und einen Überblick über meine Forschungs-Themenbreite gegeben. T2 - PhD Seminar Hohenroda CY - Hohenroda, Germany DA - 09.01.2024 KW - Umwelt KW - Material KW - Elementanalytik PY - 2024 AN - OPUS4-62246 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meermann, Björn T1 - Analytical Approaches for PFAS Sum-parameter Analysis N2 - PFAS sind emerging pollutants und sind omnipräsent – sowohl in vielen Produkten als auch in der Umwelt. Aufgrund der Vielzahl an verschiedenen Verbindungen werden dringend neue Analytische Methoden zum Nachweis der PFAS benötigt. Im Rahmen meines eingeladenen Vortrags werden neue elementanalytische Summenparameterverfahren, die in meinem Fachbereich entwickelt wurden, vorgestellt. T2 - PFAS partnership workshop CY - Online meeting DA - 27.03.2024 KW - HR-CS-GFMAS KW - PFAS KW - Environment PY - 2024 AN - OPUS4-62247 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Scharek, Vera M. A1 - Pfeifer, Jens A1 - Vogl, Jochen A1 - Traub, Heike A1 - Meermann, Björn T1 - Tin fractionation analysis in sediment samples via on-line ID ETV/ICP-MS N2 - We report a quantification approach for directly determining total tin and tin-based pollutants/species in sediments via electrothermal vaporization/inductively coupled plasma-mass spectrometry (ETV/ICP-MS) utilizing an on-line isotope dilution mass spectrometry (IDMS) approach. The method was developed and validated using an estuarine sediment reference material (BCR-277R), yielding a recovery of 106%. A relative standard deviation (RSD) of 14%, comparable to published data using a similar method, was obtained. A limit of quantification (LOQ) was estimated at 0.008 mg Sn kg−1 and sufficient for quantifying the total tin mass fraction of surface sediments along the tidal River Elbe course. Hereby, a decrease towards the river mouth, presumably due to dilution effects by less polluted marine sediment, was observed. Besides total tin, monitoring of organotin compounds (OTCs)/species is of interest in sediments due to their toxic effects on aquatic life. The method’s capability was extended by separating an OTC fraction in a sediment certified reference material (CRM) through the ETV temperature program. While spiking experiments with OTC standards confirmed the assignment, only a small fraction of the total certified OTC amount (3%), likely due to matrix effects, was recovered. However, applying the method to real-world samples, OTCs were detectable along the River Elbe course. By this, we demonstrated the potential of our method as a complementary fast-screening approach to species-specific analysis procedures. KW - ETV KW - Sn-Speciation KW - Sediment PY - 2025 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-640137 DO - https://doi.org/10.1007/s00216-025-06064-y SN - 1618-2642 SP - 1 EP - 10 PB - Springer Science and Business Media LLC AN - OPUS4-64013 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Mervič, Kristina A1 - Azimzada, Agil A1 - Bayat, Mehmet Emin A1 - Šala, Martin A1 - Meermann, Björn T1 - CO2-based matrix-independent carbon quantification approach for single microplastic-ICP-MS analysis N2 - This study presents a new CO2-based, matrix-independent calibration approach for size determination of microplastic (MP) particles using single particle inductively coupled plasma-mass spectrometry (sp-ICP-MS). By incorporating a CO2 gas calibration approach and upon adjusting the flow rates, an accurate size determination of MPs between 2 and 7 μm was enabled. Scanning electron microscopy (SEM) was successfully applied for method validation. The CO2 gas calibration curves exhibited excellent linearity and reproducibility, with minimal matrix effects across different sample types and matrices, including river water and saline solutions. This CO2-based approach eliminates the limitations of matrix- and size-dependent calibrations, enabling robust and accurate size determinations of MPs. This advancement represents a significant step forward in the analytical capabilities for MPs, paving the way for improved environmental monitoring and assessment of plastic pollution. KW - sp-ICP-MS KW - Microplastic KW - New calibration strategy PY - 2025 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-633049 DO - https://doi.org/10.1007/s00216-025-05934-9 SN - 1618-2642 SP - 1 EP - 11 PB - Springer CY - Berlin AN - OPUS4-63304 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Tobias, Charlie A1 - Gehrenkemper, Lennart A1 - Bernstein, Thomas A1 - Schlau, Sven A1 - Simon, Fabian A1 - Röllig, Mathias A1 - Meermann, Björn A1 - von der Au, Marcus T1 - Development of a fully automated slurry sampling introduction system for GF-AAS and its application for the determination of cadmium in different matrices N2 - element analysis, offering high sensitivity and precision. However, its effectiveness is limited by sample preparation challenges for solid samples like soils and microplastics. Traditional methods include sample preparation, such as digestion, which is time-consuming and involves reagents, like acids, contributing to measurement uncertainty and higher carbon footprints. Slurry sampling allows direct analysis of suspensions, offering a more efficient alternative. However, maintaining suspension stability is challenging, requiring robust autosampler systems to streamline the process and enhance analytical performance. Results: We present a novel autosampler extension for slurry sample introduction into GF-AAS. This system ensures suspension stability with a stirring device and closed vessels to prevent evaporation and contamination, incorporating a cooling unit to reduce solvent and analyte losses. It installs and removes in minutes without additional connections. Validation with cadmium analysis in BAM-U110 (Soil) and BAM-H010 (ABS) showed high reliability. For BAM-U110 (Soil), we achieved recovery rates of 94 % ± 13 % in water suspension. The recovery rate for BAM-H010 (ABS) was 104 % ±11 % in acetonitrile suspension. These results demonstrate the system’s robustness, versatility, and accuracy for different matrices. Significance: The autosampler extension helps solve key problems in trace element analysis of solid samples, making the process faster and more accurate. It works well with complex materials, making it useful for areas like microplastic or nanoparticle analysis. This improvement also helps meet regulations for monitoring environ mental and polymer samples, offering a reliable and flexible tool for high-throughput analysis with fewer errors. KW - Slurry AAS KW - Soil KW - Cd PY - 2025 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-618531 DO - https://doi.org/10.1016/j.aca.2024.343460 SN - 0003-2670 VL - 1335 SP - 1 EP - 7 PB - Elsevier BV AN - OPUS4-61853 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Azimzada, Agil A1 - Meermann, Björn T1 - AF4/ICP-ToF-MS for the investigation of species-specific adsorption of organometallic contaminants on natural colloidal particles N2 - Organotin (OT) compounds, while crucial in many industrial applications, pose substantial risks to the environment and human health. The toxicity and environmental behaviour of OTs depend on their chemical form, i.e., the type and number of organic substituents. Each species thus exhibits distinct toxicity profiles and varying binding affinities to environmental colloids, which influence their mobility, bioavailability, and environmental impacts. To date, however, most studies addressed speciation and colloidal characterization separately, leaving the combined determinations of organometallics along with their carrier colloids largely elusive. Here, we develop and validate an on-line measurement system to quantify the adsorption dynamics of 10 OT species on natural colloidal particles (<500 nm). The approach integrates a versatile fractionation technique (AF4), with a state-of-the-art multi-element analyzer (ICP-ToF-MS), achieving Sn detection limits as low as 6.0 ng/L. The method separates colloid-free OT species from those bound to colloids and enables the determination of OT interactions with distinct colloidal fractions. Validated in both fractionation and detection, the method provides reliable data that could elucidate the species-specific and temporal aspects of species-colloids adsorption processes. The results feature comparative studies of 10 OT species, offering critical insights into OT mobility and distribution in environmental systems. KW - Fractionation KW - Speciation KW - Adsorption KW - Colloids KW - Organotin KW - AF4 KW - Nanoparticle characterization PY - 2025 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-625244 DO - https://doi.org/10.1016/j.jhazmat.2025.137320 SN - 1873-3336 VL - 488 SP - 1 EP - 11 PB - Elsevier B.V. AN - OPUS4-62524 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Tavernaro, Isabella A1 - Simon, Fabian A1 - Gehrenkemper, Lennart A1 - Tobias, Charlie A1 - Resch-Genger, Ute A1 - Meermann, Björn T1 - Quantification of the amount of surface groups of aminated silica nano- and microparticles utilizing a fluorine tag and HR-CS-GFMAS N2 - The performance, bioavailability, and safe use of engineered nanomaterials (NMs) depends not only on properties such as size, shape, and surface area, but largely on surface chemistry. While many sizing methods have been established, there is still a lack of validated screening methods for determining NM surface functional groups (FGs). In this context, we present a fast and simple method for FG quantification using high resolution-continuum source-graphite furnace molecular absorption spectrometry (HR-CS-GFMAS) and assess its applicability for the surface analysis of representatively chosen aminated silica nanoparticles (NPs) and microparticles (MPs) in conjunction with amino FG labeling with a fluorine tag. For this proof-of-concept study, first surface amino FG screening of the silica NPs and MPs was done with a potentiometric back titration method, providing the total amount of protonatable surface FGs, and two optical assays relying on reporter dyes with sizes and spatial requirements, i.e., surface binding areas smaller or larger than that of the fluorine tag to estimate the maximum and reporter-accessible number of amino FGs. Subsequently, the surface amino FGs were labeled with the fluorine tag 4-(trifluoromethyl)benzoic acid (TFMB) and the amount of fluorine originating from the bound TFMB molecules was quantified by HR-CS-GFMAS in two common organic solvents, i.e., dimethyl sulfoxide (DMSO) or ethanol (EtOH) to assess possible interferences from organic matrices. Our study revealed limits of detection (LODs) and quantification (LOQs) for fluorine of 1.0 µg/L and 3.5 µg/L in EtOH and 1.5 µg/L and 5.0 µg/L in DMSO, respectively. Overall, a quick and simple method for analyzing surface FGs on NPs and MPs was presented utilizing broadly available fluorine tags and HR-CS-GFMAS for fluorine quantification, which can be applied, e.g., for homogeneity, stability, and aging studies of surface-modified particles. This could contribute to ease the understanding of property-safety relationships for surface-functionalized NMs. KW - Fluorine Analysis KW - Nano- and microparticles KW - Surface group quantification PY - 2025 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-641965 DO - https://doi.org/10.1007/s00216-025-06107-4 SN - 1618-2642 SP - 1 EP - 11 PB - Springer Science and Business Media LLC CY - Berlin ; Heidelberg AN - OPUS4-64196 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Scharek, Vera M. A1 - Kröger, Tommy A1 - Keil, Karin A1 - Traub, Heike A1 - Meermann, Björn T1 - A new elemental analytical approach for microplastic sum parameter analysis—ETV/ICP-MS with CO2 N2 - Microplastics (MPs) are pervasive environmental pollutants and are considered one of the main challenges of our time. However, a fast and comprehensive analytical approach for MP analysis in complex matrices traceable to SI units is still lacking. In this context, we report a fast screening tool for the sum parameter analysis of MPs using electrothermal vaporization (ETV) coupled to inductively coupled plasma-mass spectrometry (ICP-MS). In our proof-of-concept study, we observed size-independent detection of MPs as peaks above the 13C+ signal background in the nano- to micrometer range without limitations regarding the polymer type. Quantification of the 13C+ MP signals was accomplished via an external gas calibration utilizing dynamic dilution of carbon dioxide with argon, yielding recovery rates of 80–96% for MP reference material (RM) of polymer types commonly found in the environment. The applicability to a soil sample was demonstrated through spiking experiments with a polyethylene (PE) MP RM in soil. The limit of detection (LOD) was estimated to be 0.13 µg C, equaling the detection of a single spherical low-density-PE particle of about 70 µm, and a limit of quantification (LOQ) of 0.42 µg C. KW - ETV/ICP-MS KW - Mikroplastik KW - Summenparameter PY - 2025 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-646418 DO - https://doi.org/10.1007/s00216-025-06146-x SN - 1618-2642 SP - 1 EP - 10 PB - Springer CY - Berlin ; Heidelberg AN - OPUS4-64641 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meermann, Björn T1 - Species-specific isotope ratio analysis of proteins via CE/MC-ICP-MS N2 - Klassische Isotopenverhältnisanalyse (stabile IStope) läuft meistens im Rahmen einer bulk Analyse ab. Hierbei geht jedoch die Spezies-Information verloren. Ferner sind bulk Verfahren im Bereich der Probenvorbereitung aufwändig. Im Rahmen meines eingeladenen Vortrags werden neue CE/MC-ICP-MS Verfahren vorgestellt, die in meiner Gruppe entwickelt werden. T2 - 2024 Winter Conference on Plasma Spectrochemistry CY - Tucson, AZ, USA DA - 16.01.2024 KW - CE KW - MC-ICP-MS KW - Species specific isotopes PY - 2024 AN - OPUS4-62239 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Olbrich, Adelina-Elisa A1 - An Stepec, Biwen Annie A1 - Wurzler, Nina A1 - Terol, E. C. A1 - Koerdt, Andrea A1 - Meermann, Björn T1 - Beyond corrosion: Development of a single cell-ICP-ToF-MS method to uncover the process of microbiologically influenced corrosion N2 - The development of the microbiologically influenced corrosion ( MIC ) -specific inductively coupled plasma-time of flight-mass spectrometry ( ICP-ToF-MS ) analytical method presented here, in combination with the investigation of steel-MIC interactions, contributes significantly to progress in instrumental MIC analysis. For this, a MIC-specific staining procedure was developed, which ensures the analysis of intact cells. It allows the analysis of archaea at a single cell level, which is extremely scarce compared to other well-characterized organisms. The detection method revealed elemental selectivity for the corrosive methanogenic strain Methanobacterium -affiliated IM1. Hence, the possible uptake of individual elements from different steel samples was investigated and results showed the cells responded at a single-cell level to the different types of supplemented elements and displayed the abilities to uptake chromium, vanadium, titanium, cobalt, and molybdenum from solid metal surfaces. The methods developed and information obtained will be used in the future to elucidate underlying mechanisms, compliment well-developed methods, such as SEM-EDS, and develop novel material protection concepts. KW - Single cell KW - Microbiological influenced corrosion MIC KW - Sc-ICP-ToF-MS KW - Method development KW - Ir DNA staining approach KW - Carbon steel corrosion PY - 2022 DO - https://doi.org/10.1093/mtomcs/mfac083 SN - 1756-591X VL - 14 IS - 11 SP - 1 EP - 15 PB - Oxford University Press CY - Oxford AN - OPUS4-56254 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meermann, Björn T1 - Element analytical approaches for emerging contaminant analysis-materials meet environment N2 - Im Rahmen des Vortrags wurden Elementanalytische Methoden auf Basis der ICP-MS und HR-CS-GFMAS im Kontext der Material-Umweltanalytik in Form eines Übersichtsvortrags vorgestellt. Neben den Techniken wurden diverse Applikationsbeispiele für unterschiedliche Umweltmatrizes genannt. T2 - ANAKON 2025 CY - Leipzig, Germany DA - 10.03.2025 KW - ICP-MS KW - Emerging contaminants KW - Evironment PY - 2025 AN - OPUS4-65126 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meermann, Björn T1 - Approaches for PFAS Sum-Parameter Analysis - from Materials to Environment N2 - Im Rahmen des Vortags wurden PFAS Analysemethoden auf Basis der optischen Spektroskopie (HR-CS-GFMAS) vorgestellt. Anhand ausgewählter Applikationsbeispiele wurde die Leistungsfähigkeit der Methode dargelegt. Beispiele waren dabei u.a. aus dem Bereich Oberflächenwasseranalytik, Pflanzen und Böden. T2 - Industrie Anwenderseminar PFAS 2025 CY - Online meeting DA - 30.06.2025 KW - PFAS KW - HR-CS-GFMAS KW - Summenparameter PY - 2025 AN - OPUS4-65125 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meermann, Björn T1 - Approaches for PFAS Sum-Parameter Analysis -from Materials to Environment N2 - Im Rahmen des Vortags wurden PFAS Analysemethoden auf Basis der optischen Spektroskopie (HR-CS-GFMAS) vorgestellt. Anhand ausgewählter Applikationsbeispiele wurde die Leistungsfähigkeit der Methode dargelegt. Beispiele waren dabei u.a. aus dem Bereich Oberflächenwasseranalytik, Pflanzen und Böden. T2 - VD LUFA Kongress CY - Oldenburg, Germany DA - 09.09.2025 KW - HR-CS-GFMAS KW - PFAS KW - Summenparameter PY - 2025 AN - OPUS4-65127 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Schusterbauer, Robert A1 - Schünemann, Pia A1 - Nickl, Philip A1 - Er, Jasmin A1 - Kämmer, Victoria A1 - Junge, Florian A1 - Fazzani, Salim A1 - Mrkwitschka, Paul A1 - Meermann, Björn A1 - Haag, Rainer A1 - Donskyi, Ievgen T1 - Bifunctional Reduced Graphene Oxide Derivatives for PFOA Adsorption N2 - Innovative materials are crucial for removing persistent pollutants per‐ and polyfluorinated alkyl substances (PFAS) from water. Here, a novel bifunctional reduced graphene oxide (TRGO) adsorbent is developed and characterized by advanced surface sensitive methods. Compared to pristine TRGO, the functionalized TRGO shows markedly improved PFAS removal efficiency and demonstrates strong potential for water purification applications. KW - Adsorber KW - PFAS KW - HR-CS-GFMAS PY - 2025 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-651238 DO - https://doi.org/10.1002/ceur.202500240 SN - 2751-4765 SP - 1 EP - 7 PB - Wiley VHC-Verlag AN - OPUS4-65123 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Junge, Florian A1 - Wittwer, Philipp A1 - Sommerfeld, Thomas A1 - Gehrenkemper, Lennart A1 - Zoister, Christian A1 - Nickl, Philip A1 - Koch, Matthias A1 - Meermann, Björn A1 - Haag, Rainer T1 - Adsorber Charge Dominates over Hydrophobic or Fluorophilic Functionalization in Influencing Adsorption of PFCA onto Polystyrene Resins N2 - A systematic series of industrial-relevant polystyrene-based anion exchange resins that are functionalized with hydro- or fluorocarbon chains are compared regarding their adsorption behavior toward perfluorocarboxylic acids (PFCA) in respect to their charge, chain length, and type of chain. The results clearly show the dominance of electrostatic interactions in the adsorption process as uncharged adsorber materials showed no adsorption at all. In contrast, the charged adsorber materials showed in general a PFCA removal of 80% to 30% over the experiment depending on effluent fraction. Unexpectedly, for perfluorobutanoic acid (PFBA) the highest removal rate is found with consistently >90%. Despite observing significant benefits in the adsorption of PFCA for fluoroalkylated adsorbers in comparison to their non-fluorinated counterparts, this effect of fluoroalkylation is comparatively small and can not be clearly attributed to fluorophilic interactions between the fluoroalkyl chains. These findings help clarifying that the introduction of fluorocarbon moieties in adsorber materials is not necessary in order to remove fluorocarbon molecules from the environment. KW - PFAS KW - Remediation KW - Adsorption KW - Fluorophilic interactions PY - 2024 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-601883 DO - https://doi.org/10.1002/admi.202400199 SN - 2196-7350 SP - 1 EP - 10 PB - John Wiley & Sons CY - Hoboken, New Jersey, USA AN - OPUS4-60188 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Scharek, Vera M. A1 - Traub, Heike A1 - Meermann, Björn T1 - A direct solid sampling approach for fluorine determination via ETV/ICP-QQQ-MS N2 - Organic fluorine sum parameters are used to detect F-containing pollutants, e.g., per- and polyfluoroalkyl substances (PFASs), in the environment, within materials, or for monitoring technical processess, e.g., thermal decomposition of PFAS during municipal waste incineration. However, established approaches determining the extractable organic and adsorbable organic fluorine content (EOC and AOC) require laborious and error-prone sample preparation. We report a solid sampling-electrothermal vaporization (ETV) method for direct fluorine measurement based on the formation of [138Ba19F]+ with an inductively coupled plasma-triple quadrupole-mass spectrometer (ICP-QQQ-MS). Method development involved the instrumental setup for Ba introduction and fluorine-specific tuning of lens and collision-reaction cell (CRC) parameters. An inorganic fluorine fraction was detected in a cyclonic dust sample from a municipal waste incineration plant as a peak above a broad background signal. The content was estimated through standard addition using a NaF solution to 2300 mgg−1. With a limit of detection (LOD) of 130 mg g−1, which was below the reported value for an electrothermal vaporization/inductively coupled plasma-mass spectrometry (ETV/ICP-MS) approach, acquiring [19F]+. The method's potential for fractionation analysis was demonstrated by analyzing polytetrafluoroethylene (PTFE) powder. KW - PFAS KW - ETV/ICP-QQQ-MS KW - Solid sampling PY - 2026 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-656766 DO - https://doi.org/10.1039/d6ja00014b SN - 0267-9477 SP - 1 EP - 7 PB - Royal Society of Chemistry (RSC) AN - OPUS4-65676 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -