| Zugriffsnummer | 33728 |
| Dokumenttyp | Zeitschriftenartikel |
| Sprache | Englisch |
| Titel | Gravimetric preparation and characterization of primary reference solutions of molybdenum and rhodium. |
| Autor(in); Institution |
Kaltenbach, Angela; 3.1, Metrologie in der Chemie, PTB-Braunschweig
Noordmann, Janine; 3.1, Metrologie in der Chemie, PTB-Braunschweig
Görlitz, Volker; 3.1, Metrologie in der Chemie, PTB-Braunschweig
Pape, Carola; 3.1, Metrologie in der Chemie, PTB-Braunschweig
Richter, Silke; Federal Institute for Materials Research and Testing (BAM), Berlin, Germany
Kipphardt, Heinrich; Federal Institute for Materials Research and Testing (BAM), Berlin, Germany
Kopp, Gernot; MLS GmbH, Leutkirch, Germany
Jährling, Reinhardt; 3.1, Metrologie in der Chemie, PTB-Braunschweig
Rienitz, Olaf; 3.1, Metrologie in der Chemie, PTB-Braunschweig
Güttler, Bernd; 3.1, Metrologie in der Chemie, PTB-Braunschweig
|
| Quelle/Jahr | Analytical and Bioanalytical Chemistry: 407 (2015), 11, 3093 - 3102 |
| ISSN | 1618-2642 (PRINT) ; 1618-2650 (ONLINE) |
| DOI | |
| Verlag | Berlin: Springer |
| Freie Schlagworte | digestion ; rhodium ; molybdenum ; reference solution ; reference solution ; traceability ; ICP OES ; MC-ISP-MS |
| Zusammenfassung | Gravimetrically prepared mono-elemental reference solutions having a well-known mass fraction of approximately 1g/kg (or a mass concentration of 1 g/L) define the very basis of virtually all measurements in inorganic analysis. Serving as the starting materials of all standard/calibration solutions they link virtually all measurements of inorganic analytes (regardless of the method applied) to the purity of the solid materials (high purity metals or salts) they were prepared from. In case these solid materials are characterized comprehensively with respect to their purity, this link also establishes direct metrological traceability to The International System of Units (SI). This, in turn, ensures the comparability of all results on the highest level achievable. Several national metrology institutes (NMIs) and designated instates (DIs) have been working for nearly two decades I close cooperation with commercial producers on making an increasing number of traceable reference solutions available. Besides the comprehensive characterization of the solid starting materials, dissolving them both loss-free and completely under strict gravimetrical control is a challenging problem in case of several elements like molybdenum and rhodium. In the framework of the European Metrology Research Programme (EMRP), within the Joint Research Project (JRP) called SIB09 Primary standards for challenging elements, reference solutions of molybdenum and rhodium were prepared directly from the respective metals with a relative expanded uncertainty associated with the mass fraction of Urel(w) (0.05 %. To achieve this, a microwave-assisted digestion procedure for Rh and a hot-plate digestion procedure for Mo were developed along with highly accurate and precise ICP OES and MC-ICP-MS methods required to assist with the preparation and as dissemination tools. |
Zitierung
Kaltenbach, A., Noordmann, J., Görlitz, V., Pape, C., Richter, S., Kipphardt, H., Kopp, G., Jährling, R., Rienitz, O., & Güttler, B. (2015). Gravimetric preparation and characterization of primary reference solutions of molybdenum and rhodium. Analytical and Bioanalytical Chemistry, 407(11), 3093–3102. https://doi.org/10.1007/s00216-014-8395-2