TY - JOUR A1 - Lange, Britta A1 - Kipphardt, Heinrich A1 - Recknagel, Sebastian A1 - Meier, Klaus T1 - Preparation and analysis of a reference material for the measurement of oxygen in copper JF - Accreditation and quality assurance N2 - The preparation and analysis of the oxygen mass fraction of three pure copper reference materials (BAM-379/1, BAM-379/2, BAM-379/3) intended for the calibration of spark emission spectrometry are described here. Data of homogeneity testing and round robin certification in collaboration with 12 independent laboratories from metalworking industry and research are reported. Problems with the establishment of traceability in this special case are discussed. KW - Determination of oxygen KW - Copper KW - Reference material KW - Certification PY - 2002 DO - https://doi.org/10.1007/s00769-001-0413-3 SN - 0949-1775 SN - 1432-0517 VL - 7 IS - 1 SP - 19 EP - 23 PB - Springer CY - Berlin AN - OPUS4-10994 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kipphardt, Heinrich A1 - Matschat, Ralf T1 - SI-traceable standards oh high metrological quality for chemical measurements T2 - EU conference "Towards an integrated infrastructure for measurements" T2 - EU conference "Towards an integrated infrastructure for measurements" CY - Warsaw, Poland DA - 2002-06-18 PY - 2002 AN - OPUS4-5971 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kipphardt, Heinrich A1 - Matschat, Ralf T1 - Development of SI-traceable standards of high metrological quality for chemical analysis of the elements T2 - 12th EuroAnalysis T2 - 12th EuroAnalysis CY - Dortmund, Germany DA - 2002-09-08 PY - 2002 AN - OPUS4-3588 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kipphardt, Heinrich T1 - What is BAM? T2 - CENAM Institutsseminar T2 - CENAM Institutsseminar CY - Querétaro, Mexico DA - 2002-01-29 PY - 2002 AN - OPUS4-2936 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kipphardt, Heinrich A1 - Matschat, Ralf T1 - Provision of promary reference materials for calibretion ; method development for trace analysis T2 - CENAM Institutsseminar T2 - CENAM Institutsseminar CY - Querétaro, Mexico DA - 2002-01-30 PY - 2002 AN - OPUS4-2934 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kipphardt, Heinrich A1 - Matschat, Ralf A1 - Dudzus, Thomas A1 - Meier, Klaus A1 - Recknagel, Sebastian A1 - Hedrich, Martina T1 - Measurment of oxygen and nitrogen in high purity metals by carrier gas hot extraction (HE) and HE after activation with photons T2 - CENAM Institutsseminar T2 - CENAM Institutsseminar CY - Querétaro, Mexico DA - 2002-02-01 PY - 2002 AN - OPUS4-2935 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Kipphardt, Heinrich T1 - Establishing traceability to SI for elemental analysis: reporting from a difficult but worthwhile journey JF - Spectroscopy Europe PY - 2002 UR - http://www.spectroscopyeurope.com/articles/quality-matters/2052-establishing-traceability-to-si-for-elemental-analysis-reporting-from-a-difficult-but-worthwhile-journey SN - 0966-0941 VL - 14 IS - 6 SP - 27 EP - 28 PB - Wiley-VCH Verl. CY - Weinheim AN - OPUS4-2028 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Kipphardt, Heinrich A1 - Matschat, Ralf T1 - Development of SI-traceable standards of high metrological quality for chemical analysis of the elements JF - Analytical and bioanalytical chemistry T2 - 12th Euroanalysis ; 12th European Conference on Analytical Chemistry CY - Dortmund, Germany DA - 2002-09-08 PY - 2002 SN - 1618-2642 SN - 1618-2650 VL - 375 IS - 8, P1-018 SP - 198 PB - Springer CY - Berlin AN - OPUS4-1630 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kipphardt, Heinrich A1 - Matschat, Ralf T1 - Development of SI-traceable standards of high metrological quality for chemical analysis of the elements T2 - Towards an integrated infrastructure for measurements T2 - Towards an integrated infrastructure for measurements CY - Warszawa, Poland DA - 2002-06-18 PY - 2002 SP - 66 EP - 67 AN - OPUS4-1631 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kipphardt, Heinrich A1 - Recknagel, Sebastian T1 - Measurement of Nitrogen in Steel by Carrier Gas Hot Extraction - a Challenge in Calibration T2 - 6th International Workshop on progress in analytical chemistry in the steel and metals industries T2 - 6th International Workshop on progress in analytical chemistry in the steel and metals industries CY - Luxembourg, Luxembourg DA - 2002-05-14 PY - 2002 SP - 1(?) AN - OPUS4-1629 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kipphardt, Heinrich A1 - Matschat, Ralf T1 - Preparation of primary calibration substances - method development for trace analysis T2 - Proceedings of CENAM T2 - CENAM CY - Mexico City, Mexico DA - 2002-01-28 PY - 2002 AN - OPUS4-1611 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kipphardt, Heinrich A1 - Dudzus, Thomas A1 - Meier, Klaus A1 - Recknagel, Sebastian A1 - Hedrich, Martina A1 - Matschat, Ralf T1 - The measurement of O and N by classical carrier gas hot extraction (HE) - Carrier gas hot extraction after activation with photons T2 - Proceedings of CENAM T2 - CENAM CY - Mexico City, Mexico DA - 2002-01-28 PY - 2002 AN - OPUS4-1610 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - RPRT A1 - Meier, Klaus A1 - Wäthen, U. A1 - Kipphardt, Heinrich A1 - Lamberty, A. A1 - Robouch, P. T1 - The certification of the mass fraction of Cd, Cu, Fe, Pb, Sn and TI in four grades of unalloyed zinc intended for use in emission spectrometry - BCR-322R, BCR-323R, BCR-324R, BCR-325R, Project Report EUR 20267 EN PY - 2002 SN - 92-894-3706-5 SP - 1 EP - 55 PB - Office for Official Publications of the European Communities CY - Luxembourg AN - OPUS4-1606 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Matschat, Ralf A1 - Kipphardt, Heinrich T1 - BAM System of Primary Pure Elements - Aim and Current State T2 - CCQM Annual Meeting of Inorganic Working Group T2 - CCQM Annual Meeting of Inorganic Working Group CY - Ottawa, Canada DA - 2002-10-09 PY - 2002 AN - OPUS4-1603 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Matschat, Ralf A1 - Kipphardt, Heinrich A1 - Recknagel, Sebastian A1 - Noack, Siegfried ED - Abiko, K. ED - Takaki, S. T1 - Activities of Division "Inorganic Chemical Analysis; Reference Materials" of BAM in the Field of Analysis of Metals T2 - Proceedings of the 9th international conference on ultrahigh-purity base metals T2 - 9th international conference on ultrahigh-purity base metals CY - Sendai, Japan DA - 2002-10-14 PY - 2002 SP - 297 EP - 302 CY - Sendai AN - OPUS4-1602 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Matschat, Ralf A1 - Kipphardt, Heinrich A1 - Czerwensky, Michael A1 - Richter, Silke A1 - Heinrich, Hans-Joachim ED - Abiko, K. ED - Takaki, S. T1 - The System of Primary Pure Metals Established at BAM - Recent Developments T2 - Proceedings of the 9th international conference on ultrahigh-purity base metals T2 - 9th international conference on ultrahigh-purity base metals CY - Sendai, Japan DA - 2002-10-14 PY - 2002 SP - 119 CY - Sendai AN - OPUS4-1601 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Kipphardt, Heinrich A1 - Russe, K. A1 - Bréas, O. A1 - Taylor, P.D.P. T1 - Conversion of Carbon into CF4 for SI-Traceable Measurements of Absolute Carbon Isotope Amount Ratios: A Feasibility Study JF - Analytical chemistry N2 - The feasibility of performing SI-traceable carbon isotope amount ratio measurements following conversion of carbon into CF4 was studied. A procedure for the direct fluorination of carbon with elemental fluorine was developed, and the conversion step was checked for losses, blank contributions, and the absence of systematic isotope effects. Gas chromatography was used to identify and quantify the gaseous fluorination products and to isolate CF4 from byproducts. After fluorination of graphite carbon, CF4 and perfluoroalkanes with up to six carbon atoms were observed as reaction products. Within an uncertainty of 10%, the graphite carbon was fully recovered in the gaseous carbon fluorides, with the main product being CF4 (80-90%) and C2F6 as the major byproduct. The fluorination and GC procedures were found to introduce an alteration not bigger than 0.03 ± 0.04” on the isotopic composition of CF4. Carbon blank contributions introduced during the fluorination procedure were below 0.5% relative to a typical sample of 4 mg of carbon. For two of the materials investigated, the carbon isotope ratios measured on a differential mass spectrometer were reproducible within a standard deviation of ~0.1” for several individual fluorinations. For these materials, the developed fluorination procedure is a straightforward process, which can be used as a foundation to establish SI-traceable measurements of carbon isotope amount ratios. However, for the third graphite material the formation of byproducts (C2F6-C6F14) was found to induce significant isotopic fractionation. PY - 2002 DO - https://doi.org/10.1021/ac015700g SN - 0003-2700 SN - 1520-6882 VL - 74 SP - 3199 EP - 3205 PB - American Chemical Society CY - Washington, DC AN - OPUS4-1408 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Kipphardt, Heinrich A1 - Dudzus, Thomas A1 - Meier, Klaus A1 - Recknagel, Sebastian A1 - Hedrich, Martina A1 - Matschat, Ralf T1 - Measurement of oxygen and nitrogen in high purity metals used as national standards for elemental analysis in Germany by classical carrier gas hot extraction (HE) and HE after activation with photons JF - Materials transactions N2 - The special importance of the analysis of non-metals in high purity metals, which will serve as national standards for elemental analysis in Germany, is illustrated for oxygen and nitrogen. The typical range of the mass fraction of oxygen and nitrogen in these materials is below 10.MU.g/g, often close to 1.MU.g/g. The two methods applied at BAM for these measurements are classical carrier gas hot extraction (HE) and carrier gas hot extraction after activation with photons (PAA-HE). The approach, the methods and their advantages and limitations are discussed. Comparative results from the measurement of oxygen and nitrogen in Cu, Fe, Ga, Pb, Sn and W are presented. (author abst.) T2 - 8th International Conference on Ultra-High Purity Base Metals (UHPM-2001) CY - Berlin, Germany DA - 2001-06-25 KW - Oxygen determination KW - Nitrogen determination KW - High purity metals KW - Carrier gas hot extraction KW - Photon activation analysis PY - 2002 DO - https://doi.org/10.2320/matertrans.43.98 SN - 1345-9678 SN - 1347-5320 VL - 43 IS - 2 SP - 98 EP - 100 PB - Japan Institute of Metals CY - Sendai AN - OPUS4-1361 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -