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 U6 - 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 -