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 OPUS4-20787 Zeitschriftenartikel Ma, L.; Feng, L.; Hioki, A.; Cho, K.H.; Vogl, Jochen; Berger, Achim; Turk, G.; Macleod, S.; Labarraque, G.; Tong, W.F.; Schiel, D.; Yafa, C.; Valiente, L.; Konopelko, L.A.; Quetel, C.; Vermaercke, P.; Manzano, J.V.L.; Linsky, M.; Cortés, E.; Tangpitayakul, S.; Plangsangmas, L.; Bergamaschi, L.; Hearn, R. International comparison of the determination of the mass fraction of cadmium, chromium, mercury and lead in polypropylene: the Comité Consultatif pour la quantité de matičre pilot study CCQM-P106 Berlin Springer 2010 Accreditation and quality assurance 15 1 39 44 10.1007/s00769-009-0574-z 2016-02-19 OPUS4-30458 Zeitschriftenartikel Rienitz, O.; Schiel, D.; Görlitz, V.; Jährling, R.; Vogl, Jochen; Lara-Manzano, J.V.; Zon, A.; Fung, W.-H.; Buzoianu, M.; De Sena, R.C.; Dos Reis, L.A.; Valiente, L.; Yim, Y.-H.; Hill, S.; Champion, R.; Fisicaro, P.; Bing, W.; Turk, G.C.; Winchester, M. R.; Saxby, D.; Merrick, J.; Hioki, A.; Miura, T.; Suzuki, T.; Linsky, M.; Barzev, A.; Máriássy, M.; Cankur, O.; Ari, B.; Tunc, M.; Konopelko, L.A.; Kustikov, Y.A.; Bezruchko, M. Final report on CCQM-K87: Mono-elemental calibration solutions The aim of this comparison was to demonstrate the capability of national metrology institutes to measure elemental mass fractions at a level of w(E) ≈ 1 g/kg as found in almost all mono-elemental calibration solutions. These calibration solutions represent an important link in traceability systems in inorganic analysis. Virtually all traceable routine measurements are linked to the SI through these calibration solutions. Every participant was provided with three solutions of each of the three selected elements chromium, cobalt and lead. This comparison was a joint activity of the Inorganic Analysis Working Group (IAWG) and the Electrochemical Analysis Working Group (EAWG) of the CCQM and was piloted by the Physikalisch-Technische Bundesanstalt (PTB, Braunschweig, Germany) with the help of the Bundesanstalt für Materialforschung und -prüfung (BAM, Berlin, Germany), the Centro Nacional de Metrología (CENAM, Querétaro, Mexico) and the National Institute of Standards and Technology (NIST, Gaithersburg, USA). A small majority of participants applied inductively coupled plasma optical emission spectrometry (ICP OES) in combination with a variety of calibration strategies (one-point-calibration, bracketing, calibration curve, each with and without an internal standard). But also IDMS techniques were carried out on quadrupole, high resolution and multicollector ICP-MS machines as well as a TIMS machine. Several participants applied titrimetry. FAAS as well as ICP-MS combined with non-IDMS calibration strategies were used by at least one participant. The key comparison reference values (KCRV) were agreed upon during the IAWG/EAWG meeting in November 2011 held in Sydney as the added element content calculated from the gravimetric sample preparation. Accordingly the degrees of equivalence were calculated. Despite the large variety of methods applied no superior method could be identified. The relative deviation of the median of the participants' results from the gravimetric reference value was equal or smaller than 0.1% (with an average of 0.05%) in the case of all three elements. Bristol Inst. of Physics Publ. 2012 Metrologia 49 08010, 1A (Technical Supplement 2012) 1 104 10.1088/0026-1394/49/1A/08010 2016-02-20 OPUS4-51983 Zeitschriftenartikel Molloy, J. L.; Winchester, M. R.; Butler, T. A.; Possolo, A. M.; Rienitz, O.; Roethke, A.; Goerlitz, V.; Caciano de Sena, R.; Dominguez Almeida, M.; Yang, L.; Methven, B.; Nadeau, K.; Romero Arancibia, P.; Bing, W.; Tao, Z.; Snell, J.; Vogl, Jochen; Koenig, Maren; Kotnala, R. K.; Swarupa Tripathy, S.; Elishian, C.; Ketrin, R.; Suzuki, T.; Oduor Okumu, T.; Yim, Y.-H.; Heo, S. W.; Min, H. S.; Sub Han, M.; Lim, Y.; Velina Lara Manzano, J.; Segoviano Regalado, F.; Arvizu Torres, M.; Valle Moya, E.; Buzoianu, M.; Sobina, A.; Zyskin, V.; Sobina, E.; Migal, P.; Linsky, M.; Can, S. Z.; Ari, B.; Goenaga Infante, H. CCQM-K143 Comparison of Copper Calibration Solutions Prepared by NMIs/DIs CCQM-K143 is a key comparison that assesses participants' ability to prepare single element calibration solutions. Preparing calibration solutions properly is the cornerstone of establishing a traceability link to the International System of Units (SI), and therefore should be tested in order to confirm the validity of CCQM comparisons of more complex materials. CCQM-K143 consisted of participants each preparing a single copper calibration solution at 10 g/kg copper mass fraction and shipping 10 bottled aliquots of that solution to the coordinating laboratory, the National Institute of Standards and Technology (NIST). The masses and mass fraction for the prepared solutions were documented with the submitted samples. The solutions prepared by all participants were measured at NIST by high performance inductively coupled plasma optical emission spectroscopy (HP-ICP-OES). The intensity measurements for copper were not mapped onto values of mass fraction via calibration. Instead, ratios were computed between the measurements for copper and simultaneous measurements for manganese, the internal standard, and all subsequent data reductions, including the computation of the KCRV and the degrees of equivalence, were based on these ratios. Other than for two participants whose measurement results appeared to suffer from calculation or preparation errors, all unilateral degrees of equivalence showed that the measured values did not differ significantly from the KCRV. These results were confirmed by a second set of ICP-OES measurements performed by the Physikalisch-Technische Bundesanstalt (PTB). CCQM-K143 showed that participants are capable of preparing calibration solutions starting from high purity, assayed copper metal. Similar steps are involved when preparing solutions for other elements, so it seems safe to infer that similar capabilities should prevail when preparing many different, single-element solutions. Cambridge IOP Science 2020 Metrologia 58 1A 08006 10.1088/0026-1394/58/1A/08006 2021-01-13