| Zugriffsnummer | 52087 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | mit Peer Review |
| Sprache | Englisch |
| Titel | CCQM-K160: platinum group elements in automotive catalyst |
| Autor(in); Institution |
Hill, Sarah; LGC, Teddington, UK
Goenaga Infante, Heidi; LGC, Teddington, UK
Entwisle, John; LGC, Teddington, UK
Strekopytov, Stanislav; LGC, Teddington, UK
Ward-Deitrich, Christian; LGC, Teddington, UK
Cowen, Simon; LGC, Teddington, UK
Görlitz, Volker; 3.1, Allgemeine und Anorganische Chemie, PTB-Braunschweig
Schulz, Ursula; 3.1, Allgemeine und Anorganische Chemie, PTB-Braunschweig
Pape, Carola; 3.1, Allgemeine und Anorganische Chemie, PTB-Braunschweig
Vogl, Jochen; Bundesanstalt für Materialforschung und -prüfung (BAM), Berlin, GERMANY
König, Maren; Bundesanstalt für Materialforschung und -prüfung (BAM), Berlin, GERMANY
Jacimovic, Radojko; Jozef Stefan Institute (JSI), Ljubljana, SLOVENIA
Fisicaro, Paola; Laboratoire national de métrologie et d'essais (LNE), Paris, FRANCE
Ren, Tongxiang; National Institute of Metrology (NIM), Beijing, CHINA
Wang, Song; National Institute of Metrology (NIM), Beijing, CHINA
Song, Panshu; National Institute of Metrology (NIM), Beijing, CHINA
Li, Haifeng; National Institute of Metrology (NIM), Beijing, CHINA
Linsky, Maré; National Metrology Institute of South Africa (NMISA), Pretoria, SOUTH AFRICA
Sobina, Egor; UNIIM-Affiliated branch of the D.I.Mendeleyev Institute for Metrology (VNIIM-UNIIM), Ekaterinburg, RUSSIA
Ezequiel Lozano, Hernán; Instituto Nacional de Tecnologia Industrial (INTI), Buenos Aires, ARGENTINA
Puelles, Mabel; Instituto Nacional de Tecnologia Industrial (INTI), Buenos Aires, ARGENTINA
Yamani, Randa; National Institute of Standards (NIS), Giza, EGYPT
Haraldsson, Conny; Research Institutes of Sweden (RISE), Borås, SWEDEN
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| Quelle/Jahr | Metrologia: 61 (2024), 1A, Tech. Suppl., 35 S. |
| Artikelnummer | 08011 |
| Availability | [online only] |
| ISSN | 0026-1394 (print) ; 1681-7575 (online) |
| DOI | |
| Verlag | Bristol: IOP Publishing |
| Zusammenfassung | Main Text The platinum group elements (PGEs) play an important role in reducing emissions from automotive vehicles through their use in catalytic convertors but also for catalysis in the pharmaceutical industry. The immense economic value of platinum (Pt), palladium (Pd) and rhodium (Rh) highlights the importance of highly accurate measurements. Therefore, there is a need for National Metrology Institutes (NMIs) and Designated Institutes (DIs) to demonstrate measurement capability in this space. A pilot comparison (CCQM-P63) for precious metals in automotive catalyst took place in 2006, but with a limited number of institutes participating. Furthermore, this study was performed over 17 years ago. Therefore, there was a need to maintain existing capability and demonstrate new capability in a key comparison, in order to claim calibration and measurement capability claims (CMCs). With the core capability matrix, this study falls into the "Difficult to dissolve metals/metal oxides" which will support CMC categories 8 (Metal and metal alloys), 9 (Advanced materials) and 14 (Other materials). Eleven NMIs and DIs participated in the Key Comparison CCQM-K160 Platinum Group Elements in Automotive Catalyst. Participants were requested to evaluate the mass fractions of Pt, Pd and Rh in mg/kg in an unused autocatalyst material (cordierite ceramic base). The Key Comparison Reference Values (KCRVs) and Degrees of Equivalence (DoEs) were calculated utilising the NIST Decision Tree for the measurands. The participants utilised a number of sample preparation and analytical methods including hot plate digestion, microwave digestion and sodium fusion, followed by either atomic absorption spectroscopy (AAS), inductively coupled plasma optical emission spectroscopy (ICP-OES) or inductively coupled plasma mass spectrometry (ICP-MS) detection. Several calibration techniques were used, namely external calibration, standard addition, isotope dilution mass spectrometry (IDMS) and an exact matching procedure. Additionally, one participant employed instrumental neutron activation analysis (INAA) with k0 standardisation which is a direct solid analysis method. The majority of participants claimed traceability to NIST primary calibrants or their own CRMs. Furthermore, several matrix CRMs were included or spiked samples for quality control. All institutes were required to determine the dry mass fraction using the stipulated protocol. The NIST decision tree was implemented for the calculation of the KCRVs and DoEs. The participant results overall showed good agreement with the KCRV, despite the variety of dissolution procedures and measurement techniques for this highly complex matrix and challenging measurands. Successful participation in CCQM-K160 demonstrated measurement capabilities for the determination of mass fraction of Pt, Pd and Rh in the mg/kg range and will support broad scope CMC claims for a wide range of challenging matrices. |
| Kostenfreier Zugang | Freier Zugang |
| Themenbereich der Metrologie | Metrologie in der Chemie und Stoffeigenschaften |
Zitierung
Hill, S., Goenaga Infante, H., Entwisle, J., Strekopytov, S., Ward-Deitrich, C., Cowen, S., Rienitz, O., Röthke, A., Görlitz, V., Schulz, U., Pape, C., Vogl, J., König, M., Jacimovic, R., Fisicaro, P., Ren, T., Wang, S., Song, P., Li, H., Linsky, M., Sobina, E., Ezequiel Lozano, H., Puelles, M., Yamani, R., & Haraldsson, C. (2024). CCQM-K160: platinum group elements in automotive catalyst. Metrologia, 61(1A, Tech. Suppl.), 35 S. https://doi.org/10.1088/0026-1394/61/1A/08011