Dokument-ID Dokumenttyp Autoren/innen Persönliche Herausgeber/innen Haupttitel Abstract Auflage Verlagsort Verlag Herausgeber (Institution) Erscheinungsjahr Titel des übergeordneten Werkes Jahrgang/Band ISBN Veranstaltung Veranstaltungsort Beginndatum der Veranstaltung Enddatum der Veranstaltung Ausgabe/Heft Erste Seite Letzte Seite URN DOI Lizenz Datum der Freischaltung OPUS4-21841 Zeitschriftenartikel Vogl, Jochen; Pritzkow, Wolfgang Isotope reference materials for present and future isotope research Isotope reference materials are essential to enable reliable and comparable isotope data. This article reviews the work in this field within the past years. The focus is on all stable elements, except for classical stable isotopes (H, C, N, O, S) and for radioactive elements. Currently available isotope reference materials are listed. The limitations of synthetic isotope mixtures being used to characterize these materials are discussed, as well as the limitations of the isotope reference materials, such as uncertainty and homogeneity. The needs for present research on isotope variations are being considered and are compared to the limitations of current isotope reference materials. This disagreement between both can only be solved by providing isotope reference materials defining a δ-scale for each element of interest. Such materials should be provided with additional data on isotope abundances whenever possible. As an outlook a possible outline for a new program on isotope reference materials is discussed. London Royal Society of Chemistry 2010 Journal of analytical atomic spectrometry 25 923 932 10.1039/c000509f 2016-02-19 OPUS4-26102 Buchkapitel Vogl, Jochen; Pritzkow, Wolfgang Vanhaecke, F.; Degryse, P. Reference materials in isotopic analysis Weinheim Wiley-VCH Verlag GmbH & Co. KGaA 2012 Isotopic analysis - Fundamentals and applications using ICP-MS 978-3-527-32896-3 Chapter 6 139 163 2016-02-19 OPUS4-22044 Zeitschriftenartikel Vogl, Jochen; Koenig, Maren; Pritzkow, Wolfgang; Riebe, Gundel Development of reference procedures for the quantification of toxic metals and S in plastics The quantitative analysis of toxic metals in plastics is very important for different sectors of industry and daily life. Many routine procedures have been established based on X-ray fluorescence or inductively coupled plasma atomic emission spectrometry. However, all of them require suitable reference materials to calibrate or validate. These reference materials ideally are being certified by reference procedures. The development of such reference procedures for sulfur and the four toxic elements cadmium, chromium, mercury and lead in plastics is described here. The procedures are based on double isotope dilution mass spectrometry including analyte-matrix separation. The applied mass spectrometric techniques are thermal ionization mass spectrometry as well as inductively coupled plasma mass spectrometry. Memory effects of mercury and dissolution of chromium(III) oxide have been considered especially. The expanded uncertainties have been improved from the percent range down to the per mill range during the development of the procedure from the early analysis of BCR-680/681 to the recent analysis of CCQM-P106. With the fully developed procedures expanded uncertainties (k = 2) between 0.1 and 0.4% for cadmium, chromium, lead and sulfur and around 1% for mercury can be achieved. The so developed procedures have been successfully applied to the certification of reference materials as well as to intercomparisons organized by CCQM. London Royal Society of Chemistry 2010 Journal of analytical atomic spectrometry 25 10 1633 1642 10.1039/c0ja00034e 2016-02-19 OPUS4-22603 Zeitschriftenartikel Vogl, Jochen; Pritzkow, Wolfgang Isotope dilution mass spectrometry - a primary method of measurement and its role for RM certification New Delhi Metrology Society of India 2010 MAPAN - Journal of metrology society of India 25 3 135 164 2016-02-19