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 -