TY - JOUR A1 - Balski, Matthias A1 - Emmerling, Franziska A1 - Kipphardt, Heinrich A1 - Panne, Ulrich T1 - Determination of boron in silicon without use of additional complexing agents N2 - Methods for the determination of boron in various matrices described in the literature usually employ complexing agents like mannitol to retain the volatile boron species during matrix evaporation steps. However, also relatively high boron recoveries from silicon containing samples have been reported when no complexing agents were added to the digestion acids. The mechanism behind this matrix-dependant recovery has been investigated by studying the boron recovery in the analysis of solar grade silicon. It was found that the NH4+ ion formed by the reduction of nitric acid during sample digestion is responsible for the higher recovery of boron, which leads to a possible analysis method without the use of complexing agents if the sample preparation procedure is carefully optimized. KW - Boron KW - Complexing agents KW - Matrix evaporation KW - Sample enrichment PY - 2014 U6 - https://doi.org/10.1039/c4ay00410h SN - 1759-9660 SN - 1759-9679 VL - 6 IS - 12 SP - 4003 EP - 4008 PB - RSC Publ. CY - Cambridge AN - OPUS4-30956 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Balski, Matthias A1 - Kipphardt, Heinrich A1 - Berger, Achim A1 - Meyer, S. A1 - Panne, Ulrich T1 - Determination of impurities in solar grade silicon by inductively coupled plasma sector field mass spectrometry (ICP-SFMS) subsequent to matrix evaporation N2 - A method for the determination of 22 trace impurities in solar grade silicon after dissolution in a mixture of HF and HNO3 and subsequent matrix evaporation is reported. The presented method involves a simple, inexpensive, one-vessel sample preparation apparatus design. The recoveries of B, Na, Mg, Al, P, K, Ca, Ti, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Ge, As, Mo, Sb, W, and Tl at 250 µg kg-1 level are in the range of 93 to 108%. After careful selection of monitored isotopes and their respective resolutions, a sector field mass spectrometer has been used to carry out the measurements. Limits of determination down to 120 ng kg-1 have been obtained using a calibration by three-point standard addition. The method was tested on diluted NIST SRM 57b silicon powder as well as on synthetic test samples and also applied successfully on raw solar grade silicon samples in an interlaboratory comparison including NAA. KW - Solar grade silicon KW - Matrix separation KW - Sector field mass spectrometry PY - 2014 U6 - https://doi.org/10.1039/C3AY41213J SN - 1759-9660 SN - 1759-9679 VL - 6 IS - 1 SP - 77 EP - 85 PB - RSC Publ. CY - Cambridge AN - OPUS4-29893 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Meyer, S. A1 - Richter, S. A1 - Balski, Matthias A1 - Hagendorf, C. ED - Thirsk, M. T1 - Trace element analysis in crystalline silicon PY - 2013 SN - 978-0-9565331-3-5 SP - 34 EP - 38 PB - Photovoltaics International CY - London, UK AN - OPUS4-29823 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Balski, Matthias A1 - Pfeifer, Jens A1 - Kipphardt, Heinrich A1 - Panne, Ulrich T1 - Chemische Analytik von Solarsilicium T2 - Adlershofer Forschungsforum CY - Berlin, Germany DA - 2013-11-12 PY - 2013 AN - OPUS4-29691 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Balski, Matthias A1 - Svatko, Zhanna A1 - Richter, Silke A1 - Kipphardt, Heinrich A1 - Jakubowski, Norbert A1 - Panne, Ulrich T1 - Silicium-Analytik mit direkten Feststofftechniken, Möglichkeiten und Grenzen T2 - 4. Anwenderseminar direkte Feststofftechniken CY - Berlin, Germany DA - 2012-05-10 PY - 2012 AN - OPUS4-25951 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Balski, Matthias A1 - Kipphardt, Heinrich A1 - Meyer, S. A1 - Jakubowski, Norbert A1 - Panne, Ulrich T1 - Plasmatechniken als vielseitige Analysenmethoden in der Solarindustrie T2 - Anwendertreffen Plasmaspektrometrie 2012 CY - Berlin, Germany DA - 2012-02-27 PY - 2012 AN - OPUS4-25949 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Balski, Matthias A1 - Gonzàlez-Gago, C. A1 - Svatko, Zhanna A1 - Kipphardt, Heinrich A1 - Jakubowski, Norbert A1 - Panne, Ulrich T1 - Den Verunreinigungen im Silicium auf der Spur T2 - 23. ICPMS Anwendertreffen und 10. Symposium Massenspektrometrische Verfahren der Elementspurenanalyse CY - Tulln an der Donau, Austria DA - 2012-09-10 PY - 2012 AN - OPUS4-27477 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Meyer, S. A1 - Richter, S. A1 - Balski, Matthias A1 - Hagendorf, C. T1 - Trace element analysis in crystalline silicon PY - 2011 SN - 1757-1197 VL - 14th Edition IS - 4th Quarter, November SP - 34 EP - 39 PB - Semiconductor Media CY - London AN - OPUS4-25284 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Koch, Matthias A1 - Gärtner, Sonja A1 - Balski, Matthias A1 - Köppen, Robert A1 - Nehls, Irene T1 - Aus der Kartonverpackung in die Babynahrung N2 - Lebensmittel in Recyclingkartons finden sich längst in allen Supermärkten. Doch die schützende Verpackung kann zu einer Quelle für Kontaminationen durch Phthalate werden. Analytik und Migration dieser hormonell wirksamen Weichmacher sind daher ein aktueller Forschungsschwerpunkt. KW - Analytische Chemie KW - Lebensmittelchemie KW - Umweltanalytik KW - Gaschromatographie KW - Massenspektrometrie PY - 2011 U6 - https://doi.org/10.1002/nadc.201178449 SN - 1439-9598 SN - 1521-3854 VL - 59 IS - 5 SP - 544 EP - 546 PB - Wiley-VCH Verl. CY - Weinheim AN - OPUS4-23639 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Balski, Matthias A1 - Kühn, Andreas A1 - Meyer, S. A1 - Kipphardt, Heinrich A1 - Jakubowski, Norbert A1 - Panne, Ulrich T1 - Elementspurenanalytik in Solarsilicium T2 - ANAKON 2011 CY - Zurich, Switzerland DA - 2011-03-22 PY - 2011 AN - OPUS4-23825 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Balski, Matthias A1 - Meyer, S. A1 - Kipphardt, Heinrich A1 - Jakubowski, Norbert A1 - Panne, Ulrich T1 - Determination of trace impurities in solar grade silicon T2 - European Winter Conference on Plasma Spectrochemistry CY - Zaragoza, Spain DA - 2011-01-30 PY - 2011 AN - OPUS4-23225 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Balski, Matthias A1 - Meyer, S. A1 - Kipphardt, Heinrich A1 - Jakubowski, Norbert A1 - Panne, Ulrich T1 - Determination of trace impurities in solar grade silicon T2 - CANAS 2011 CY - Leipzig, Germany DA - 2011-03-13 PY - 2011 AN - OPUS4-23235 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Balski, Matthias A1 - Kipphardt, Heinrich A1 - Jakubowski, Norbert A1 - Panne, Ulrich T1 - Bestimmung von Spurenverunreinigungen in Solarsilicium T2 - 9. Symposium Massenspektrometrische Verfahren der Elementspurenanalyse, 22. ICP-MS Anwendertreffen CY - Berlin, Germany DA - 2010-09-06 PY - 2010 AN - OPUS4-21988 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Gärtner, Sonja A1 - Balski, Matthias A1 - Koch, Matthias A1 - Nehls, Irene T1 - Analysis and migration of phthalates in infant food packed in recycled paperboard N2 - The contamination of infant food with substances from its packaging due to migration processes is still a problem. Most recently, great attention was paid to the migration of epoxidized soybean oil (ESBO) and phthalates from twist-off closures into baby food packed in glass jars. Besides, packaging made of recycled fiber materials such as paper and paperboard were found to be the source of contaminants in dry and powdery foodstuffs such as sugar, rice, and maize flour. In this study 20 infant food samples packed in recycled paperboard containers were tested for phthalates and diisopropyl naphthalenes (DIPN), known incorporated substances in recycled paper. Furthermore, the barrier function of different secondary packaging materials (paper and aluminum-coated foil) was investigated. The highest contents of phthalates (mainly diisobutyl phthalate, DiBP) and DIPN in infant food samples were found for those foods packed in inner bags made of paper. Migration experiments were performed under authentic conditions to evaluate possible transfer mechanism (gas phase, direct contact) of phthalate esters into foodstuff. It is shown that paper does not provide an appropriate barrier against migration of semipolar compounds such as phthalates. The air space itself otherwise effectively prevents migration of the less volatile phthalates under the applied conditions. KW - Phthalates KW - Accelerated solvent extraction (ASE) KW - Infant food KW - Recycled paper KW - Migration KW - GC-MS PY - 2009 U6 - https://doi.org/10.1021/jf902683m SN - 0021-8561 SN - 1520-5118 VL - 57 IS - 22 SP - 10675 EP - 10681 PB - American Chemical Society CY - Columbus, Ohio AN - OPUS4-20472 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -