TY - CONF A1 - Miclea, P-T T1 - Evaluation of Toxicological Characteristics of Airborne Nano/Microplastic Particles From the Industrial Environment N2 - Micro and nano plastic (MNPs) particles and fibres represent a global scale contamination source with hazard potential. They can be identified all around our environment, even in air, soil and water. One of the major global MNPs polluters is the textile industry, which generates plastic particles (nylon, polyester, polyurethane, polyolefin, acrylic etc.) during the manufacturing processes. The study analyses the level of particle concentration outside a company that processes textile yarns, but also from the proximity of workplaces using an online air samplers with cascade and mono filter holders for silicon (Si) and quartz filters, respectively. A laser detector was used for real- time counting of particles of six size classes (PM0.3-PM10). Silicon (Si) filters with a diameter of 9 mm and pore sizes of 10 µm and 1 µm and quartz filters with a diameter of 25 mm and a pore size of 1.2 µm were used for particle sampling. A special holder was designed and made for selective sampling (PM10 and PM1.0) on Si filters. Quartz filters were pre-calcined (8000C) before collection. Sampling parameters: airflow (GilAir Plus pump) -2 l/m3, collection time -3 hours; starting time 7.00 am (T1)/2.00 pm (T2), intermittent natural ventilation, average temperature and humidity: 23.3 0C, RH: 52.5%. The weight of particles collected (µg) on the quart filters was 4.9E-05 (T1) and 5.1E-05 (T2) and on the Si filters 3,2 E-05(T1) and 5E-06(T2). The total number of the outside particles (PM0,3-PM10) was situated between 3584,58 (T1)-15165,05(T2) and inside 9901(T1) and 12921,61(T2). The highest number of PM 10 particles inside was 72/m3 and of PM0.3 particles 71979/m3. The samples were characterized using electron microscopy and µRaman spectroscopy. All samples showed a high concentration of particles on the filter. Samples show only particles with irregular shapes. The equivalent particle diameter was for PM10: 1-5 µm and PM1<1 µm. The total Ion Chromatogram shows the presence of PET-type polymer and the TED GS-MS analysis shows that the weight of the collected particles is PET. After extracting the particles from the quartz filters, they were tested for evaluation of the cytotoxic potential of preparations on human monocyte-macrophage cell cultures and peripheral lymphocytes. In the first case, the level of cytotoxicity was at the border between non-cytotoxic and cytotoxic and in the second test the result was moderate cytotoxic. T2 - SETAC Europe 2025 CY - Vienna, Austria DA - 11.05.2025 KW - Microplastics KW - TED-GC/MS KW - Nanoplastics KW - Raman microscopy PY - 2025 AN - OPUS4-63378 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rautenberg, Max T1 - Fluorine Modified ZIF 8 for Electrochemical Catalysis: Where does the Fluorine go? N2 - Carbonization of fluorinated metal-organic frameworks (MOFs) should yield fluorinated nitrogen- and metal-doped carbons (F-NMCs), which are a combination of NMCs and fluorinated carbons, each promising electrocatalysts on their own. We synthesized two polymorphs of a fluorinated MOF by mechanical ball mill grinding, and carbonized them to yield potential electrocatalyt materials. The catalytical activity towards the oxygen reduction reaction (ORR) was examined, finding good activites. Simulations from a theoretic model helped assesing the stability of proposed catalytic sites and understanding the measured activites towards the ORR catalysis. T2 - Online symposium of the CRC 1349 "fluorine-specific interactions" CY - Online meeting DA - 29.06.2021 KW - PGM-free catalyst KW - Oxygen Reduction Reaction KW - Mechanochemistry KW - MOFs KW - Computational chemistry PY - 2021 AN - OPUS4-53538 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Falkenhagen, Jana T1 - Coupling of chromatographic and spectrometric techniques for polymer characterization N2 - Coupling of chromatographic and spectrometric techniques for polymer characterization; focus topics: LCxMALDI-TOF-MS and UPLC x ESI-TOF-MS T2 - 16. Tagung des Arbeitskreises Polymeranalytik CY - Online meeting DA - 22.03.2022 KW - Liquid chromatography KW - Mass spectrometry KW - Polymers KW - Two-dimensional chromatography (2D-LC) PY - 2022 AN - OPUS4-54567 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Altmann, Korinna T1 - Repräsentative Untersuchungsstrategien für ein integratives Systemverständnis von spezifischen Einträgen von Kunststoffen in die Umwelt (RUSEKU) N2 - Der Vortrag wurde im Rahmen der Abschlusskonferenz des Forschungsschwerpunktes "Plastik in der Umwelt" des BMBF gehalten. Er fasst die Ergebnisse des Verbundprojektes RUSEKU zusammen. Es wurde die Herstellung verschiedener Testmaterialien für die Mikroplastik (MP) Analytik beschrieben. Im weiteren geht es um verschiedene Ansätze MP kostengünstig und schnell zu detektieren, z.B. mit Nahinfrarotspektroskopie. Nanoplastik konnte mit der Transmissionselektronenmikroskopie sichtbar gemacht werden. Für die praxisnahe Beprobung von Gewässern wurde die Fraktionierte Filtration entwickelt. Integrale Beprobungen können mit dem Sedimentationskasten erfolgen. Als Beispiele für die Beprobung realer Gewässer wurde das urbane Abwassersystem Kaiserslautern, Getränkewasser und Waschmaschinenwasser gezeigt. T2 - Abschlusskonferenz des Forschungsschwerpunktes "Plastik in der Umwelt" des BMBF CY - Online meeting DA - 20.04.2021 KW - Mikroplastik KW - TED-GC/MS KW - Probennahme KW - RUSEKU PY - 2021 AN - OPUS4-52546 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Eisentraut, Paul T1 - Fast quantitative detection of microplastics using TED-GC/MS, an innovative thermoanalytical method N2 - Im Vortrag wird die BAM vorgestellt und die Motivation für Engagement im Feld der Mikroplastikanalysen dargelegt. Die Herausforderungen bei der Analyse werden aufgezeigt und der Umgang mit ihnen. Das Arbeitsprinzip der TED-GC/MS sowie Leistungsparameter werden erläutert sowie das Vorgehen zur Identifikation und Quantifizierung von Polymeren in er Umwelt. An ausgewählten Beispielen werden interessante Ergebnisse präsentiert und die Mikroplastikreferenzmaterialien der BAM vorgestellt. N2 - In the talk, the BAM is introduced and the motivation for our engagement in the field of microplastic analysis is explained. The challenges in the analysis of microplastics are shown and how we deal with them. The working principle of TED-GC/MS and its performance parameters are presented, as well as the procedure for identifying and quantifying polymers in environmental samples. Interesting results are shown using selected examples. Finally, BAM's microplastic reference materials are highlighted. T2 - National Environmental Monitoring Conference CY - Online meeting DA - 02.08.2021 KW - Microplastic KW - TED-GC/MS KW - Environmental analysis PY - 2021 AN - OPUS4-53081 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Altmann, Korinna A1 - Hodoroaba, Vasile-Dan T1 - CUSP inter-laboratory comparisons N2 - In this breakout session first, an introduction is given on the planning and organisation of an inter-laboratory comparison (ILC) under the pre-standardisation plattform VAMAS within the newly formed technical working area TWA 45 Micro and Nano Plastics in the Environment. An update with the ILCs on micro- and nanoplastic performed so far is also given. In the third part, the requirements for a reference materials are presented. The needs from the different H2020 micro- and nanoplastic projects are collected and compiled in an ILC matrix for joint activities as the next steps. T2 - The European Research Cluster to Understand the Health Impact of Micro- and Nanoplastics (CUSP) Launching Event CY - Online meeting DA - 10.06.2021 KW - Microplastic KW - Nanoplastic KW - Inter-laboratory comparison KW - VAMAS KW - Reference material PY - 2021 AN - OPUS4-52808 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Altmann, Korinna T1 - Mikroplastik an der BAM: TED-GC/MS und Referenzmaterialien N2 - Thema ist die Funktionsweise der TED-GC/MS als Methode für die Mikroplastik-Detektion sowie die Herstellung dazugehöriger Referenzmaterialien an der BAM T2 - 25. Kolloquium Massenspektrometrie von Polymeren CY - Online meeting DA - 17.06.2021 KW - Mikroplastik KW - TED-GC/MS KW - Referenzmaterial PY - 2021 AN - OPUS4-52835 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Altmann, Korinna T1 - Harmonisation efforts of the CUSP projects N2 - The talk is about harmonisation approaches within CUSP. First the five H2020 projects for research on risk assessment regarding microplastics topic were presented. Secondly, harmonisation process were discussed. T2 - VAMAS SC 47 Meeting CY - Turin, Italy DA - 19.10.2022 KW - Microplastics KW - Harmonisation KW - Nanoplastics KW - H2020 KW - Risk assessment PY - 2022 AN - OPUS4-56077 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weidner, Steffen T1 - MALDI Mass spectrometry of synthetic polymers – making molecular elephants to fly N2 - The importance of MALDI TOF mass spectrometry for the analysis of synthetic polymers is shown and some specific issues influencing the analysis e.g. polymer mass dispersity, matrix and matrix homogeneity, nature of cations and end groups, sequence distribution are discussed by means of examples. T2 - Merck Polymer Seminar CY - Online meeting DA - 29.04.2021 KW - MALDI-ToF MS KW - Ionization KW - Desorption KW - Polymers PY - 2021 AN - OPUS4-52545 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weidner, Steffen T1 - Differences in MALDI Ionization of neat linear and cyclic poly(L-lactide)s N2 - In addition to molar mass distribution (MMD) synthetic polymers often exhibit an additional chemical heterogeneity distribution, expressed by different end groups and other structural variations (e.g. tacticity, copolymer composition etc.). Ionization in MALDI MS is always strongly affected by such chemical properties. For example, the abundance of cyclics in MALDI TOF mass spectra is frequently reported to greatly exceed that of linears. Thus, the MALDI ionization behavior of various neat end-capped linear poly(L-lactide)s and one cyclic poly(L-lactide) was investigated and compared with that of blends of both structures. Moreover, the influence of the cationizing salt was investigated too. Neat compounds and various blends of cyclic and linear species were prepared and studied using two MALDI TOF mass spectrometers under identical conditions with regard to sample preparation and instrumental conditions, except for the laser power and the salt used for cationization. Polymer samples were additionally characterized by NMR and SEC. The steady increase of the laser intensity caused an exponential increase of the peak intensities of both linear and cyclic polylactides.The response of linear polylactides (in the investigated molecular mass range), whether as neat polymer or in blends with other linear polylactides was almost similar. This clearly supports our assumption that ionization in MALDI is probably unaffected by the end group structure.The variation of the laser power shows only little effect on the intensity ratio of linear-to linear and cyclic-to-linear polylactides in blends. Whereas neat linear polylactides at all laser intensities have a significantly higher abundance than neat cyclics, in mixtures of both an overestimation of cyclic species in MALDI TOF mass spectra of polylactides was found. However, this is far less distinct than frequently reported for other polymers.Concluding, peak suppression of linear polymers in mixtures of both architectures can be excluded, which also means, that polylactides showing only peaks of cyclic compounds in their MALDI - TOF mass spectra do not contain a significant fraction of linear analogues. Our study is the first systematic comparison of the MALDI ionization of neat and blended cyclic and linear polylactides. T2 - ASMS 2020 Reboot CY - Online meeting DA - 01.06.2020 KW - MALDI KW - Ionization KW - Linear KW - Cyclic KW - Polylactide PY - 2020 AN - OPUS4-50852 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -