TY - JOUR A1 - Matschat, Ralf A1 - Czerwensky, Michael A1 - Traub, Heike A1 - Heinrich, Hans-Joachim A1 - Kipphardt, Heinrich T1 - Special new techniques of atomic spectrometric methods for trace analysis of high purity metals PY - 2003 SN - 0032-6895 SN - 1778-3771 VL - 91 IS - Décembre SP - 37 EP - 50, N° Hors Série CY - Paris AN - OPUS4-6188 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Traub, Heike A1 - Czerwensky, Michael A1 - Matschat, Ralf A1 - Kipphardt, Heinrich A1 - Panne, Ulrich T1 - Homogenitätsprüfung und Analyse von reinem Kupfer mit Laserablation-ICP-Massenspektrometrie KW - Laserablation KW - Kupfer KW - Homogenität KW - ZRM PY - 2007 SN - 0026-0746 VL - 61 IS - 11 SP - 744 EP - 745 PB - Giesel Verlag GmbH CY - Isernhagen AN - OPUS4-16153 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Traub, Heike A1 - Czerwensky, Michael A1 - Matschat, Ralf A1 - Kipphardt, Heinrich A1 - Panne, Ulrich T1 - Different calibration strategies for the analysis of pure copper metal by nanosecond laser ablation inductively coupled plasma mass spectrometry N2 - In this work, different calibration strategies for the determination of trace elements in pure copper metal by nanosecond laser ablation ICP-MS were investigated. In addition to certified reference materials (CRMs), pellets of doped copper powder were used for calibration. The micro homogeneity of the CRMs as well as the solution-doped pellets was sufficient to use them as calibration samples in combination with a laser spot size of 200 µm. In contrast, pellets doped with analytes in solid form showed a significant heterogeneity. For most of the investigated analytes and copper CRMs the measured mass fractions were within ± 20% of their certified values when other copper CRMs were used as calibration samples. When solution-doped powder pellets were used as calibration samples a systematic trend towards mass fractions below the certified values was observed for nearly all elements determined in the analysed CRMs. Thermal fractionation effects during the ablation of the solution-doped pellets were suspected as the extent of the fractionation depends on the irradiance, whereas fractionation is reduced at higher irradiance. PY - 2010 U6 - https://doi.org/10.1039/b915564c SN - 0267-9477 SN - 1364-5544 VL - 25 IS - 5 SP - 690 EP - 696 PB - Royal Society of Chemistry CY - London AN - OPUS4-21195 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -