TY - CONF A1 - Ostermann, Markus T1 - Kunststoffreferenzmaterialien für die RFA - Zertifizierung der Elementgehalte in BAMH010 T2 - Panalytical Anwendertreffen CY - Fulda, Germany DA - 2010-06-08 PY - 2010 AN - OPUS4-21577 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Görner, Wolf A1 - Haase, Oskar A1 - Ostermann, Markus A1 - Segebade, Christian T1 - Instrumental analysis of phosphorus in organic material using high energy beta-counting after photoactivation (IPAA) N2 - C, N, O, F and P can be analyzed by instrumental photon activation analysis (IPAA) including decay curve analysis. The interference of 30P (T1/2 = 149.9 s) by 15O (T1/2 = 122.2 s) can be ruled out by direct positron measurement making use of the largely different maximum β+-energies of both nuclides (3.24 MeV and 1.73 MeV, respectively). Interference by carbon (11C) can be avoided by sub-threshold activation with 17 MeV bremsstrahlung. The short half-life of 30P allows a high productivity of the method. Reliability was demonstrated in the range of 0.2%–2% P (detection limit = 40 µg/g). Analysis of a certified reference material (BCR-CRM 063) yielded excellent agreement with the certified data. KW - Instrumental analysis KW - Phosphorus KW - Photon activation PY - 2008 DO - https://doi.org/10.1007/s10967-007-0441-5 SN - 0236-5731 SN - 1588-2780 SN - 1417-2097 VL - 276 IS - 1 SP - 251 EP - 255 PB - Elsevier Sequoia CY - Lausanne AN - OPUS4-19157 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ostermann, Markus T1 - Zertifizierung der Elementgehalte in den Kandidatenreferenzmaterialien BAM-H001 bis BAM-H010 T2 - RFA-Anwendertreffen CY - Steinfurt, Germany DA - 2009-03-02 PY - 2009 AN - OPUS4-19206 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ostermann, Markus T1 - Das neue ABS Referenzmaterial BAM-H010 für die Untersuchung von Kunststoffen mit Röntgenfluoreszenz T2 - AK Prozessanalytik 2010 CY - Waldbronn, Germany DA - 2010-11-08 PY - 2010 AN - OPUS4-22672 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Ostermann, Markus A1 - Kettisch, P. A1 - Becker, Dorit A1 - Vogl, Jochen T1 - Measurements of sulfur in oil using pressurised wet digestion technique in open vessels and isotope dilution mass spectrometry KW - Wet digestion KW - Open vessel digestion KW - Sulfur in oil KW - Reference materials KW - TIMS KW - IDMS PY - 2003 UR - http://www.springerlink.com/content/b7alk8lgly2v/?p=6237db8a9c28481d87e7b017e6474b73&pi=88 SN - 1618-2642 SN - 1618-2650 VL - 377 IS - 4 SP - 779 EP - 783 PB - Springer CY - Berlin AN - OPUS4-2738 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Hearn, R. A1 - Berglund, M. A1 - Ostermann, Markus A1 - Pusticek, N. A1 - Taylor, P.D.P. T1 - A comparison of high accuracy isotope dilution techniques for the measurement of low level sulfur in gas oils N2 - A comparison of high accuracy methods for the analysis of total sulfur in gas oils by three metrology institutes is described. The work contains a comparison of three different aspects of the analysis: sample digestion, instrumental measurement and isotope dilution strategies. Thermal ionisation mass spectrometry (TIMS) in combination with high pressure asher (HPA) or Carius tube digestion has traditionally been used for such high accuracy analysis. However, this paper demonstrates that the faster, less laborious technique of ICP-MS in combination with microwave digestion is equally capable. Results from the comparison experiments show excellent agreement for fuel samples containing sulfur concentrations in the range 11–200 µg g-1. This excellent agreement across the different sample preparation, measurement and isotope dilution techniques has been exploited in the certification of two new diesel fuel reference materials. KW - Sulfur KW - Gas oil KW - Isotope dilution KW - ICP-MS KW - TIMS KW - Uncertainty PY - 2005 DO - https://doi.org/10.1016/j.aca.2004.10.070 SN - 0003-2670 SN - 1873-4324 SN - 0378-4304 VL - 532 IS - 1 SP - 55 EP - 60 PB - Elsevier CY - Amsterdam AN - OPUS4-7280 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Vogl, Jochen A1 - Quétel, C. A1 - Ostermann, Markus A1 - Papadakis, I. A1 - Van Nevel, L. A1 - Taylor, P.D.P. T1 - Contribution to the certification of B, Cd, Mg, Pb, Rb, Sr, and U in a natural water sample for the International Measurement Evaluation Programme Round 9 (IMEP-9) using ID-ICP-MS N2 - The present paper describes the contribution of the Institute for Reference Materials and Measurements to the certification of B, Cd, Mg, Pb, Rb, Sr, and U amount contents in a natural water sample, in round 9 of the International Measurement Evaluation Programme (IMEP-9). The analytical procedure to establish the reference values for B, Cd, Mg, Pb, Rb, Sr, and U amount contents was based on isotope dilution inductively coupled plasma-mass spectrometry used as a primary method of measurement. Applying this procedure reference values, traceable to the SI, were obtained for the natural water sample of IMEP-9. For each of the certified amount contents presented here a total uncertainty budget was calculated using the method of propagation of uncertainties according to ISO and EURACHEM guidelines. The measurement procedures, as well as the uncertainty calculations are described for all seven elements mentioned above. In order to keep the whole certification process transparent and so traceable, the preparations of various reagents and materials as well as the sample treatment and blending, the measurements themselves, and finally the data treatment are described in detail. Explanations focus on Pb as a representative example. The total uncertainties (relative) obtained were less than 2% for all investigated elements at amount contents in the pmol/kg up to the high 7mol/kg range, corresponding to low 7g/kg and mg/kg levels. KW - IMEP-9 KW - ID-ICP-MS KW - IDMS KW - Uncertainty budget KW - Certification PY - 2000 DO - https://doi.org/10.1007/s007690000145 SN - 0949-1775 SN - 1432-0517 VL - 5 SP - 272 EP - 279 PB - Springer CY - Berlin AN - OPUS4-7216 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Vogl, Jochen A1 - Liesegang, D. A1 - Ostermann, Markus A1 - Diemer, J. A1 - Berglund, M. A1 - Quétel, C. A1 - Taylor, P. A1 - Heumann, K. T1 - Producing SI-traceable reference values for Cd, Cr and Pb amount contents in polyethylene samples from the Polymer Elemental Reference Material (PERM) project using isotope dilution mass spectrometry N2 - The present paper describes the certification of the amount content of Cd, Cr and Pb in two different polyethylene materials within the third phase of the Polyethylene Elemental Reference Material (PERM) project. The analytical procedure to establish the reference values for Cd, Cr and Pb amount contents in these materials is based on isotope dilution mass spectrometry used as a primary method of measurement. Cd and Pb were measured with inductively coupled plasma-mass spectrometry and Cr with positive thermal ionization-mass spectrometry. The decomposition of the polymer matrix was carried out using a high pressure asher. Reference values for amount content, traceable to the SI-system, have been obtained for these three elements in both of the polyethylene samples of PERM. For each of the certified amount content values an uncertainty budget was calculated using the method of propagation of uncertainties according to ISO and EURACHEM guidelines. The measurement procedures, as well as the uncertainty calculations, are described for all three elements. In order to keep the whole certification process as transparent as possible, the preparations of various reagents and materials as well as the sample treatment and blending are described in detail. The mass spectrometry measurements and the data treatment are also explained carefully. The various sources of uncertainty present in the procedure are displayed in the uncertainty budgets. The obtained combined uncertainties for the amount content values were less than 2% relative (k=1) for all investigated elements. The amount contents were in the ?mol/kg range, corresponding to mg/kg levels. KW - PERM KW - ICP-MS KW - PTI-MS KW - IDMS KW - Uncertainty budget KW - Certification KW - Polyethylene PY - 2000 DO - https://doi.org/10.1007/s007690000146 SN - 0949-1775 SN - 1432-0517 VL - 5 SP - 314 EP - 324 PB - Springer CY - Berlin AN - OPUS4-7217 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Pritzkow, Wolfgang A1 - Vogl, Jochen A1 - Köppen, Robert A1 - Ostermann, Markus T1 - Determination of sulfur isotope abundance ratios for SI-traceable low sulfur concentration measurements in fossil fuels by ID-TIMS N2 - The present work describes the development of an existing TIMS procedure to a reference procedure for low sulfur concentration measurements in fossil fuels. With this enhanced procedure SI-traceable sulfur mass fractions below 10 mg kg-1 can be obtained. The achieved detection limit is approximately 0.2 mg kg-1. The procedure was validated by certified reference materials. The procedure was already applied to candidate reference materials and to samples analysed within projects of the “Comité Consultatif pour la Quantité de Matière – CCQM”. Additionally the influence of the isotopic composition on the results and its corresponding uncertainty was studied. Reference data published in the literature on the isotopic composition of sulfur were assessed. KW - TIMS KW - IDMS KW - Low sulfur KW - Fossil fuel KW - Reference procedure PY - 2005 DO - https://doi.org/10.1016/j.ijms.2004.10.024 SN - 0168-1176 SN - 0020-7381 SN - 1387-3806 SN - 1873-2798 VL - 242 SP - 309 EP - 318 PB - Elsevier CY - Amsterdam AN - OPUS4-7222 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ostermann, Markus T1 - On the determination of the moisture content in different matrix materials T2 - Trends in sample preparation 2002 CY - Seggauberg, Austria DA - 2001-06-29 PY - 2001 AN - OPUS4-7716 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -