TY - JOUR A1 - Scharlach, C. A1 - Müller, Larissa A1 - Wagner, S. A1 - Kobayashi, Y. A1 - Kratz, H. A1 - Ebert, M. A1 - Jakubowski, Norbert A1 - Schellenberger, E. T1 - LA-ICP-MS allows quantitative microscopy of europium-doped iron oxide nanoparticles and is a possible alternative to ambiguous Prussian blue iron staining N2 - The development of iron oxide nanoparticles for biomedical applications requires accurate histological evaluation. Prussian blue iron staining is widely used but may be unspecific when tissues contain substantial endogenous iron. Here we tested whether microscopy by laser ablation coupled to inductively coupled plasma mass spectrometry (LA-ICP-MS) is sensitive enough to analyze accumulation of very small iron oxide particles (VSOP) doped with europium in tissue sections. KW - Atherosclerotic plaques KW - LA-ICP-MS microscopy KW - Quantification KW - Element microscopy KW - Histology PY - 2016 U6 - https://doi.org/10.1166/jbn.2016.2230 SN - 1550-7033 SN - 1550-7041 VL - 12 IS - 5 SP - 1001 EP - 1010 AN - OPUS4-36189 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Kratz, S. A1 - Vogel, Christian A1 - Adam, Christian T1 - Agronomic performance of P recycling fertilizers and methods to predict it: a review N2 - Phosphorus (P) is an essential element for all life forms, and P-availability thus an important driver of a functioning agriculture. However, phosphate rock resources for P-fertilizer production are only available in a few countries. Therefore, P-recovery from waste materials has become of increasing interest during the last decade and has been investigated worldwide. In order to characterize potential novel P-fertilizers made from recycled materials, a large array of P-compound characterizations, chemical extractions and growth experiments were performed. This review bundles the work carried out in that field over the last years. Overall, P-fertilizers from recycled materials show a broad range of P-compounds with very different chemical structure and solubility. Growth experiments performed to assess their fertilizing effects display high variations for most of the products. While these experiments have demonstrated that some fertilizers made of recycled materials may reach P effects in the same order of magnitude as water-soluble phosphate rock-based fertilizers, an important limitation in their interpretation is the fact that they often vary considerably in their experimental design. The existing data show clearly that standardization of growth experiments is urgently needed to achieve comparable results. Standard chemical extractants used to assess the chemical solubility of P-fertilizers were found to be of limited reliability for predicting plant P uptake. Therefore, alternative methods such as sequential fractionation, or the extraction of incubated soil/fertilizer mixtures with standard soil extractants or with P sink methods should be tested more intensively in the future to provide alternative options to predict the P-availability of fertilizers from recycled materials. KW - Recycling fertilizer KW - Phosphorus KW - Chemical extraction methods KW - Agronomic performance KW - Incubated soil/fertilizer mixtures KW - P sink method KW - Diffusive gradients in thin films (DGT) PY - 2019 U6 - https://doi.org/10.1007/s10705-019-10010-7 SN - 1385-1314 SN - 1573-0867 VL - 115 IS - 1 SP - 1 EP - 39 PB - Springer AN - OPUS4-48713 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Kratz, S. A1 - Beerbaum, B. A1 - Elsner, H. A1 - Reuvers, J. A1 - Dockhorn, T. A1 - Rechberger, H. A1 - Werner, W. A1 - Knudsen, L. A1 - Flachowsky, G. A1 - Rodehutscord, M. A1 - Adam, Christian A1 - Steingrobe, B. A1 - Schick, J. A1 - Albert, E. A1 - Leinweber, P. A1 - Ekardt, F. A1 - Embert, G. T1 - Ressourcen schonender Einsatz von Phosphor in der Landwirtschaft - Symposium des Institutes für Pflanzenbau und Bodenkunde des JKI in Braunschweig - eine Synopse KW - Klärschlamm KW - Phosphor KW - Ressource KW - Klärschlammasche KW - P-Düngemittel KW - Demonstrationsanlage PY - 2009 SN - 1867-0911 SN - 1867-0938 SN - 1865-4371 VL - 61 IS - 2 SP - 69 EP - 71 PB - Ulmer CY - Stuttgart AN - OPUS4-18928 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Adam, Christian A1 - Peplinski, Burkhard A1 - Kley, Gerd A1 - Kratz, S. A1 - Schick, J. A1 - Schnug, E. T1 - Phosphorrückgewinnung aus Klärschlammaschen - Ergebnisse aus dem EU-Projekt SUSAN N2 - Phosphor ist ein für alle Lebewesen essenzielles Element und kann in seinen Funktionen z. B. als Bestandteil der DNS und RNS sowie als Schlüsselelement beim Energiestoffwechsel (ADP/ATP) nicht ersetzt werden. Klärschlammaschen sind aufgrund ihrer hohen Gehalte an Phosphor (15–25 % P2O5) geeignete Sekundärrohstoffe für die Herstellung von P-Düngemitteln. Aufgrund der schlechten Pflanzenverfügbarkeit des Phosphors und der Gehalte an umweltrelevanten Schwermetallen sollten diese allerdings nicht direkt in der Landwirtschaft eingesetzt werden. Im Mittelpunkt des EU-Projekts SUSAN steht die Entwicklung und Optimierung einer thermochemischen Behandlung von Klärschlammaschen, mit der die Düngewirkung der Aschen auf das Niveau konventioneller Mineraldünger (Thomaskali und Superphosphat SSP) angehoben wird und die Schwermetallkonzentrationen unter die Grenzwerte nach Düngemittelverordnungen europäischer Länder abgesenkt werden. Die sehr positiven Ergebnisse, die bisher im SUSAN-Projekt erzielt wurden, und die darauf basierenden ökonomischen Betrachtungen legen eine großtechnische Umsetzung des Verfahrens nahe. KW - Klärschlamm KW - Phosphor KW - Ressource KW - Klärschlammasche KW - P-Düngemittel KW - Mineralische Phasen PY - 2008 U6 - https://doi.org/10.1007/s00506-008-0152-3 SN - 0945-358X SN - 1613-7566 VL - 60 IS - 3-4 SP - 55 EP - 64 PB - Springer CY - Wien AN - OPUS4-17449 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -