TY - JOUR A1 - Ulrich, Armin A1 - Braun, F. T1 - Transporttanks für Gefahrgut KW - Gefahrgut KW - Transport KW - Prüfung PY - 2009 SN - 0941-6080 VL - 18 IS - 1 SP - 23 EP - 25 PB - Verl. TÜV Rheinland CY - Köln AN - OPUS4-19229 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Kittner, Maria A1 - Kerndorff, A. A1 - Ricking, M. A1 - Bednarz, M. A1 - Obermaier, N. A1 - Lukas, M. A1 - Asenova, M. A1 - Bordós, G. A1 - Eisentraut, Paul A1 - Hohenblum, P. A1 - Hudcova, H. A1 - Humer, F. A1 - István, T. G. A1 - Kirchner, M. A1 - Marushevska, O. A1 - Nemejcová, D. A1 - Oswald, P. A1 - Paunovic, M. A1 - Sengl, M. A1 - Slobodnik, J. A1 - Spanowsky, K. A1 - Tudorache, M. A1 - Wagensonner, H. A1 - Liska, I. A1 - Braun, U. A1 - Bannick, C. G. T1 - Microplastics in the Danube River Basin: A First Comprehensive Screening with a Harmonized Analytical Approach N2 - In this study, carried out within the Joint Danube Survey 4, a comprehensive microplastic screening in the water column within a large European river basin from its source to estuary, including major tributaries, was realized. The objective was to develop principles of a systematic and practicable microplastic monitoring strategy using sedimentation boxes for collection of suspended particulate matter followed by its subsequent analysis using thermal extraction desorption-gas chromatography/mass spectrometry. In total, 18 sampling sites in the Danube River Basin were investigated. The obtained suspended particulate matter samples were subdivided into the fractions of >100 μm and <100 μm and subsequently analyzed for microplastic mass contents. The results showed that microplastics were detected in all samples, with polyethylene being the predominant polymer with maximum contents of 22.24 μg/mg, 3.23 μg/mg for polystyrene, 1.03 μg/mg for styrene-butadiene-rubber, and 0.45 μg/mg for polypropylene. Further, polymers such as different sorts of polyester, polyacrylates, polylactide, and natural rubber were not detected or below the detection limit. Additional investigations on possible interference of polyethylene signals by algae-derived fatty acids were assessed. In the context of targeted monitoring, repeated measurements provide more certainty in the interpretation of the results for the individual sites. Nevertheless, it can be stated that the chosen approach using an integrative sampling and determination of total plastic content proved to be successful. KW - Thermal extraction desorption-gas chromatography/mass spectrometry (TED-GC/MS), monitoring KW - Microplastics KW - River KW - Suspended particulate matter (SPM) KW - Sedimentation box (SB) PY - 2022 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-551444 DO - https://doi.org/10.1021/acsestwater.1c00439 VL - 2 IS - 7 SP - 1174 EP - 1181 PB - ACS Publications AN - OPUS4-55144 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Ulrich, Armin A1 - Braun, F. T1 - Neues zum Thema Tanks - Änderungen in RID/ADR 2011 KW - Gefahrgut KW - Tanks KW - RID/ADR 2011 PY - 2010 SN - 0941-6080 VL - 20 IS - 5 SP - 34 EP - 38 PB - Verl. TÜV Rheinland CY - Köln AN - OPUS4-22641 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Bannick, Claus Gerhard A1 - Bierl, R. A1 - Braun, Ulrike A1 - Brand, K. A1 - Dümichen, Erik A1 - Jekel, M. A1 - Klein, S. A1 - Knepper, T.P. A1 - König, F. A1 - Miklos, D. A1 - Rechenberg, B. A1 - Steffens, I. T1 - Mikroplastik in der aquatischen Umwelt - Ein Beitrag zur aktuellen Diskussion in Deutschland N2 - Plastics are important materials in households and industry and therefore a crucial part of our everyday life. Since the beginning of the 1970s the occurrence of plastic particles in coastal waters has been explicitly described. Meanwhile, besides the marine environment, microplastics were also detected in other environmental media, biota and water management facilities. This work gives an overview of the occurrence and first known effects of microplastics in the environment. Furthermore, current scientific proceedings are considered and pending issues are discussed. In this regard it is of central importance to develop an environmentally comprehensive, harmonized scientific proceeding for miroplastics, which enables an evaluation of relevant material flows in adaption to necessary assessment concepts. N2 - Kunststoffe sind wichtige Werkstoffe und heutzutage aus Haushalt und Wirtschaft nicht mehr wegzudenken. Seit Anfang der 1970er-Jahre wird das Vorkommen von Kunststoffpartikeln in Küstengewässern beschrieben. Inzwischen ist Mikroplastik nicht nur im marinen Bereich, sondern auch in weiteren Umweltkompartimenten, Biota und technischen Einrichtungen der Wasserwirtschaft nachgewiesen worden, in dieser Arbeit wird ein Überblick über das Vorkommen von Mikroplastik in der aquatischen Umwelt und ersten bekannten Auswirkungen gegeben. Darüber hinaus werden die aktuellen Untersuchungsverfahren von Probenahme, Probenaufbereitung und Analytik betrachtet und offene fragen diskutiert. Zentral erscheint in diesem Zusammenhang die Entwicklung einer harmonisierten medienübergreifenden Untersuchungsmethodik, die eine Auswertung relevanter Stoffströme ermöglicht und auf notwendige Bewertungskonzepte abgestimmt ist. KW - Water management KW - Plastics KW - Microplastics KW - Environment KW - Analysis KW - Mikroplastik KW - Kunststoff KW - Wasserwirtschaft KW - Analytik KW - Umwelt PY - 2015 SN - 0083-6915 VL - 113 IS - 1 SP - 7 EP - 14 PB - Wiley-VCH Verl. CY - Weinheim AN - OPUS4-33105 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Becker, S. A1 - Beckmann, Jörg A1 - Braun, M.-T. A1 - Cojocari, O. A1 - Feige, V. A1 - Fischer, B. A1 - Friederich, F. A1 - Globisch, B. A1 - Hechtfischer, G. A1 - Hens, K. A1 - Hübers, H.-W. A1 - Jelonnek, J. A1 - Jonuscheit, J. A1 - Keil, A. A1 - Kleine-Ostmann, T. A1 - Marquardt, E. A1 - Mayr, M. A1 - Nickel, H.-U. A1 - Nüßler, D. A1 - Peichl, M. A1 - Peters, O. A1 - Schür, J. A1 - Sprenger, T. A1 - Steiger, A. A1 - van Frank, S. A1 - Vieweg, N. A1 - Wilk, R. ED - Jonuscheit, J. ED - Marquardt, E. T1 - Terahertzsysteme und Anwendungsfelder N2 - Der Frequenzbereich der Terahertzwellen liegt im elektromagnetischen Spektrum zwischen den Mikrowellen und dem infraroten Licht – also etwa im Bereich von 0,1 bis 10 Terahertz (THz). Der VDI-Statusreport „Terahertzsysteme und Anwendungen“ stellt die unterschiedlichen Konzepte für Terahertzsysteme vor und zeigt Anwendungsbeispiele, bei denen die Terahertztechnik erfolgreich eingesetzt wird. Umfangreiche Literaturangaben ermöglichen eine intensivere Beschäftigung mit allen Themen des VDI-Statusreports. KW - Terahertzsysteme PY - 2020 UR - https://www.vdi.de/ueber-uns/presse/publikationen/details/terahertzsysteme-und-anwendungsfelder SP - 1 EP - 44 PB - Verein Deutscher Ingenieure (VDI) CY - Düsseldorf AN - OPUS4-50556 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Wander, Lukas A1 - Vianello, A. A1 - Vollertsen, J. A1 - Westad, F. A1 - Braun, Ulrike A1 - Paul, Andrea T1 - Exploratory analysis of hyperspectral FTIR data obtained from environmental microplastics samples N2 - Hyperspectral imaging of environmental samples with infrared microscopes is one of the preferred methods to find and characterize microplastics. Particles can be quantified in terms of number, size and size distribution. Their shape can be studied and the substances can be identified. Interpretation of the collected spectra is a typical problem encountered during the analysis. The image datasets are large and contain spectra of countless particles of natural and synthetic origin. To supplement existing Analysis pipelines, exploratory multivariate data analysis was tested on two independent datasets. Dimensionality reduction with principal component analysis (PCA) and uniform manifold approximation and projection (UMAP) was used as a core concept. It allowed for improved visual accessibility of the data and created a chemical two-dimensional image of the sample. Spectra belonging to particles could be separated from blank spectra, reducing the amount of data significantly. Selected spectra were further studied, also applying PCA and UMAP. Groups of similar spectra were identified by cluster analysis using k-means, density based, and interactive manual clustering. Most clusters could be assigned to chemical species based on reference spectra. While the results support findings obtained with a ‘targeted analysis’ based on automated library search, exploratory analysis points the attention towards the group of unidientified spectra that remained and are otherwise easily overlooked. KW - Microplastics KW - FTIR KW - Exploratory analysis PY - 2020 DO - https://doi.org/10.1039/c9ay02483b VL - 12 IS - 6 SP - 781 EP - 791 PB - Royal Society of Chemistry AN - OPUS4-50396 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Köppen, Robert A1 - Braun, B. A1 - Wedler, C. A1 - Theil, F. T1 - Synthesis of M + 4 stable isotopomers of ergometrine and ergometrinine N2 - The priority ergot alkaloids ergometrine and ergometrinine are highly toxic mycotoxins naturally occurring in different types of grains (i.e. rye, wheat, rice), as well as grain-based foods and, therefore, have gained increasing importance for food safety over the last years. The application of HPLC-MS/MS for the analysis of ergot alkaloids in food presupposes the availability of isotopically labelled internal standards. Thus, a multistep synthesis was developed for ergometrine-(N-13CD3) and its epimer ergometrinine-(N-13CD3) with a mass shift of four units compared with the parent compounds. The synthesis is based on the preparation of stable isotope labelled lysergic acid that was coupled with (S)-alaninol. The chemical synthesis of both compounds has been achieved in six steps with an overall yield of 1 % (ergometrine-(N-13CD3)) and 0.6 % (ergometrinine-(N-13CD3)), respectively. Structural identification was performed by MS analysis as well as 1H and 13C NMR. KW - Ergometrine-(N-13CD3) KW - Ergometrinine-(N-13CD3) KW - Mycotoxin KW - Ergot alkaloids KW - Analytical standard KW - Stable isotope dilution analysis (SIDA) PY - 2017 SN - 1934-578X SN - 1555-9475 VL - 12 IS - 3 SP - 373 EP - 376 PB - NPC CY - Westerville, Ohio, USA AN - OPUS4-39874 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dittmann, Daniel A1 - Saal, L. A1 - Zietzschmann, F. A1 - Mai, M. A1 - Altmann, Korinna A1 - Al-Sabbagh, Dominik A1 - Ruhl, A. S. A1 - Jekel, M. A1 - Braun, U. T1 - Aktivkohlecharakterisierung als weiterer Schlüssel für Adsorptionsprognosen organischer Spurenstoffe in der vierten Reinigungsstufe N2 - In diesem Beitrag wird der Einfluss des Aktivkohleprodukts auf die Adsorption von Spurenstoffen aus Kläranlagenablauf gezeigt und diskutiert. Im zweiten Teil wird das Material Aktivkohle analytisch charakterisiert und die Eigenschaften systematisiert. Die gewonnenen Erkenntnisse werden mit Bezug zu Praxislösungen zusammengefasst. T2 - Wasser 2021 CY - Online meeting DA - 10.05.2021 KW - Aktivkohle KW - Thermogravimetrie KW - Zersetzungsgasanalyse KW - Proximatanalyse PY - 2021 SP - 373 EP - 378 AN - OPUS4-52740 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Heumann, K. G. A1 - Abbt-Braun, G. A1 - Behrens, K. A1 - Burba, P. A1 - Frimmel, F. H. A1 - Jakubowski, B. A1 - Knöchel, A. A1 - Mielcke, J. A1 - Rädlinger, G. A1 - Marx, G. A1 - Vogl, Jochen ED - Frimmel, F. H. T1 - Element determination and its quality control in fractions of refractory organic substances and the corresponding original water samples PY - 2002 SN - 3-527-30173-9 DO - https://doi.org/10.1002/9783527611195.ch1b SP - 39 EP - 53 PB - Wiley-VCH CY - Weinheim AN - OPUS4-7224 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Bui, M. A1 - Hoffmann, K. F. A1 - Braun, T. A1 - Riedel, S. A1 - Heinekamp, Christian A1 - Scheurell, K. A1 - Scholz, G. A1 - Stawski, Tomasz A1 - Emmerling, Franziska T1 - An Amorphous Teflate Doped Aluminium Chlorofluoride: A Solid Lewis-Superacid for the Dehydrofluorination of Fluoroalkanes N2 - Ananion-dopedaluminiumchlorofluoride AlCl0.1F2.8(OTeF5)0.1(ACF-teflate) was synthesized.The material contains pentafluor-oorthotellurate(teflate)groups, which mimic fluoride ions electronically, but are sterically more demanding. They are embedded into the amorphous structure. The latter was studied by PDF analysis, EXAFS data and MAS NMR spectroscopy. The mesoporous powder is a Lewis superacid, and ATR-IR spectra of adsorbed CD3CN reveal a blue-shift of the adsorption band by73 cm-1, which is larger than the shift for SbF5. Remarkably,ACF-teflate catalyzes dehydrofluorination reactions of mono-fluoroalkanes to yield olefins in C6D6. In these cases,no Friedel-Crafts products were formed. KW - Aluminium fluorides KW - Aluminium teflates KW - C-F bond activation KW - Lewis superacids KW - Silanes PY - 2023 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-572290 DO - https://doi.org/10.1002/cctc.202300350 SN - 1867-3880 SP - 1 EP - 7 PB - Wiley VHC-Verlag AN - OPUS4-57229 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -