TY - CONF A1 - Braun, Ulrike T1 - Detection of microplastics using thermoanalytical methods  N2 - The presentation summarized the use of thermal analytic methods for the detection of microplastics. T2 - Workshop State of teh art of anylatical methodes for reliable detection of micro- and nanoplastics CY - Ispra, Italy DA - 13.05.2019 KW - microplastics, sampling, sampling techniques, water PY - 2019 AN - OPUS4-48119 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Dümichen, Erik A1 - Eisentraut, Paul A1 - Celina, M. A1 - Braun, Ulrike T1 - Automated thermal extraction-desorption gas chromatography mass spectrometry: A multifunctional tool for comprehensive characterization of polymers and their degradation products JF - Journal of Chromatography A N2 - The TED-GC-MS analysis is a two-step method. A sample is first decomposed in a thermogravimetric analyzer (TGA) and the gaseous decomposition products are then trapped on a solid-phase adsorber. Subsequently, the solid-phase adsorber is analyzed with thermal desorption gas chromatography mass spectrometry (TDU-GC-MS). This method is ideally suited for the analysis of polymers and their degradation processes. Here, a new entirely automated System is introduced which enables high sample throughput and reproducible automated fractioned collection of decomposition products. Strengths and limitations of the system configuration are elaborated via three examples focused on practical challenges in materials analysis and identification: i) separate analysis of the components of a wood-plastic-composite material, ii) quantitative determination of weight concentration of the constituents of a polymer blend and iii) quantitative analysis of model samples of microplastics in suspended particulate matter. KW - Thermal extraction-desorption gas chromatography mass spectrometry KW - Analysis KW - Polymers KW - Microplastics KW - Automation PY - 2019 DO - https://doi.org/10.1016/j.chroma.2019.01.033 VL - 1592 SP - 133 EP - 142 PB - Elsevier CY - Amsterdam AN - OPUS4-48287 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Eisentraut, Paul A1 - Goedecke, Caroline A1 - Dümichen, E. A1 - Braun, Ulrike T1 - Detektion von Mikroplastik mittels Thermoextraktion Desorption Gas Chromatographie Massen Spektrometrie (TED-GC-MS) N2 - Das Poster gibt eine kurze Einleitung in die Thematik Mikroplastik in der Umwelt. Das Funktionsprinzip des Verfahrens und einige Kenndaten werden dargestellt. Optimierte Verfahrensparameter werden aufgezählt und Teilergebnisse aus zwei Messkampagnen gezeigt. T2 - Abschlusskonferenz BMBF-Projekt MiWa CY - Karlsruhe, Germany DA - 09.09.2019 KW - Mikroplastik KW - TED-GC-MS KW - Optimierung PY - 2019 AN - OPUS4-49117 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Eisentraut, Paul A1 - Dümichen, E. A1 - Goedecke, Caroline A1 - Braun, Ulrike T1 - Mikroplastik-Bestimmung mit TED-GC-MS N2 - Der Vortrag beschreibt den Entwicklungsprozess des Analysenverfahrens TED-GC-MS zur Bestimmung von Mikroplastikgehalten in Umweltproben im Rahmen des BMBF-Projektes MiWa. Die Funktionsweise, die Automatisierung und die Optimierung einzelner Geräteparameter und Leistungsdaten werden gezeigt. Untersuchungen des Einflusses von Probenmatrices werden dargestellt und die Ergebnisse einiger Messkampagnen und Ringversuche vorgestellt, die die Routinefähigkeit des Verfahrens dokumentieren. T2 - MiWa-Abschlusskonferenz CY - Karlsruhe, Germany DA - 10.09.2019 KW - Mikroplastik KW - Thermoanalyse KW - TED-GC-MS PY - 2019 AN - OPUS4-49115 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Emmerling, Franziska T1 - Ein Blick in die Welt der Mechanochemie N2 - Perhaps due in no small part to its historical mystique, mechanochemistry has been shrowded in relative obscurity for quite some time. The successes of mechanochemistry in organic synthesis have often been curtailed by a fundamentally limited mechanistic understanding. Lately, however, the community has made great strides towards understanding the fundamentals, as well as large steps forward regarding industrially significant scale-up via twin-screw extrusion. A variety of recent work has traded in some of mechanochemistry’s mystique for simple, straight-forward chemical guidelines. T2 - Seminar Anorganische Chemie Universität Kiel CY - Kiel, Germany DA - 22.10.19 KW - Mechanochemistry KW - XRD PY - 2019 AN - OPUS4-50134 LA - mul AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Emmerling, Franziska T1 - Shaken or levitated? A time resolved perspective on unconventional crystallization N2 - This Outlook provides a brief overview of the recent achievements and opportunities created by acoustic levitation and mechanochemistry, including access to materials, molecular targets, and synthetic strategies that are difficult to access by conventional means. T2 - Vortragsreihe Analytik Merck CY - Darmstadt, Germany DA - 18.11.19 KW - Levitation KW - Acoustic levitation KW - X-ray and electron diffraction PY - 2019 AN - OPUS4-50135 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Xue, Boyang A1 - Riedel, Jens A1 - Gornushkin, Igor B. A1 - Zheng, R. A1 - You, Yi T1 - High-throughput underwater elemental analysis through optical emission spectroscopy with ultrasound-assisted μJ-laser-induced breakdown at kHz repetition rate N2 - The elemental analysis of seawater is often critical to the understanding of marine chemistry, marine geochemistry, and the deep-sea ecosystems. Laser-induced breakdown spectroscopy (LIBS) with the advantage of rapid multi-elements detection, has a great potential for in-situ elemental analysis of seawater. In practice, it is crucial to create a compact, low cost and power saving instrument for the long-term deep-sea observation. A recently appeared diode-pumped solid-state (DPSS) laser seems to be a promising candidate as it is both compact and robust. Additionally, its high repetition rate up to hundreds of kHz can provide a considerable throughput for LIBS analysis. However, the DPSS lasers operate at moderate pulse energies, usually less than one mJ, which cannot sustain stable breakdowns in bulk water. To ensure stable laser-induced plasmas underwater with such a μJ-DPSS laser, we introduced an ultrasound source to assist the breakdown process. The phase interface and mass flow generated by the near-field ultrasound can greatly reduce the breakdown threshold and enhance element-specific emissions. Meanwhile, the high repetition-rate pulses can also improve the breakdown probability and generate unique emission lines originated from the water molecule. We further demonstrate that the high repetition-rate DPSS laser combined with the Echelle spectrometer can provide effective quantitative analysis for metal elements in bulk water. T2 - 10th Euro-Mediterranean Symposium on Laser-Induced Breakdown Spectroscopy, EMSLIBS 2019 CY - Czech, Brno DA - 08.09.2019 KW - Ultrasound KW - Underwater LIBS KW - µJ-DPSS laser KW - High repetition-rate PY - 2019 AN - OPUS4-49223 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Braun, Ulrike T1 - Harmonization in microplastics Analysis N2 - The lecture summarizes the current status of hamonization edr microplastics analytics in Germany. T2 - Symposium on Occurrence and Fate of Microplastics CY - Beijing, China DA - 09.07.2019 KW - Microplastics KW - TED-GC-MS KW - Harmonisation PY - 2019 AN - OPUS4-49063 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Braun, Ulrike A1 - Eisentraut, Paul A1 - Kalbe, Ute A1 - Wachtendorf, Volker T1 - Elastomere und TPE – Gut für die Umwelt? – Kreislaufwirtschaft und Normung vereinen N2 - Der Vortrag fasst Projekte an der BAM mit Hinblick auf Elastomere und Umweltthemen zusammen. T2 - DIN Workshop: Elastomere und TPE – Gut für die Umwelt? – Kreislaufwirtschaft und Normung vereinen CY - Berlin, Germany DA - 08.08.2019 KW - Mikroplastik KW - Reifenabrieb KW - Sportböden PY - 2019 AN - OPUS4-49064 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Braun, Ulrike T1 - Messen ist nicht alles, aber ohne Messmethoden ist alles nichts!  N2 - Der Vortrag fasst den aktuellen Methodenstand bei der Analytik für Mikroplastik zusammen. T2 - FACHFORM „Mikroplastik“ anlässlich VUP-Jahrestagung 2019 CY - Gießen, Germany DA - 05.09.2019 KW - Mikroplastik KW - TED-GC-MS KW - Hamonisierung PY - 2019 AN - OPUS4-49066 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -