| Zugriffsnummer | 52213 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | mit Peer Review |
| Sprache | Englisch |
| Titel | Rigorous pH measurement in nonaqueous solution: measurement method and reference values in ethanol |
| Autor(in); Institution |
Bastkowski, Frank; 3.1, Allgemeine und Anorganische Chemie, PTB-Braunschweig
Heering, Agnes; University of Tartu, Tartu, ESTONIA
Uysal, Emrah; Electrochemistry Laboratory, Chemistry Group, The Scientific and Technological Research Council of Turkey, National Metrology Institute, (TUBITAK UME), Gebze, Kocaeli, TURKEY
Liv, Lokman; Electrochemistry Laboratory, Chemistry Group, The Scientific and Technological Research Council of Turkey, National Metrology Institute, (TUBITAK UME), Gebze, Kocaeli, TURKEY
Leito, Ivo; University of Tartu, 14a Ravila Street, Tartu, ESTONIA
Quendera, Raquel; Instituto Português da Qualidade, R. António Gião, Caparica, PORTUGAL
Ribeiro, Luís; Instituto Português da Qualidade, R. António Gião, Caparica, PORTUGAL
Deleebeeck, Lisa; DFM A/S, Kogle Allé, Hørsholm, DENMARK
Snedden, Alan; DFM A/S, Kogle Allé, Hørsholm, DENMARK
Nagy, Dániel; Government Office of the Capital City Budapest (BFKH), Budapest, HUNGARY
Nagyné Szilágyi, Zsófia; Government Office of the Capital City Budapest (BFKH), Budapest, HUNGARY
Camões, Filomena; FCiências.ID, Centro de Química Estrutural, Faculdade de Ciências da Universidade de Lisboa, Lisbon, PORTUGAL
Anes, Bárbara; FCiências.ID, Centro de Química Estrutural, Faculdade de Ciências da Universidade de Lisboa, Lisbon, PORTUGAL
Roziková, Matilda; Czech Metrology Institute, Brno, CZECH REPUBLIC
Stoica, Daniela; Laboratoire National de Métrologie Et d’Essais (LNE), Paris, FRANCE
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| Quelle/Jahr | Analytical and Bioanalytical Chemistry: 416 (2024), 461 - 465 |
| ISSN | 1618-2642 (print) ; 1618-2650 (online) |
| DOI | |
| Verlag | Berlin: Springer |
| Freie Schlagworte | unified pH scale ; reference values ; non-aqueous buffer ; interlaboratory comparison ; differential potentiometry ; commercial glass electrodes |
| Zusammenfassung | The recently introduced unified pH () concept enables rigorous pH measurements in non-aqueous and mixed media while at the same time maintaining comparability to the conventional aqueous pH scale. However, its practical application is hindered by a shortage of reference values. In order to improve this situation, the European Metrology Research Project (EMPIR) UnipHied ("Realisation of a UnipHied pH scale") launched an interlaboratory comparison among highly experienced electrochemistry expert laboratories to assign the first such reference values by adopting an extensive statistical treatment of the reported measurement data: to phosphate buffer in water–ethanol mixture (50 wt% of ethanol) and ammonium formate buffer in pure ethanol. Two different measurement setups - one capable of being easily adopted in industrial applications - have been used to demonstrate the robustness of measurement. This is an important step towards wider adoption of the concept in practice, like liquid chromatography, biofuels analysis and electrocatalysis. |
| Kostenfreier Zugang | Open Access Hybrid |
| Rechteinformation | CC BY 4.0 ; Creative Commons Attribution 4.0 License |
| Themenbereich der Metrologie | Metrologie in der Chemie und Stoffeigenschaften |
| Forschungsprojekt | 17FUN09: UnipHied: Realisation of a Unified pH Scale |
| Förderinformationen (1) |
Förderername: European Commission (EC)
Förderer ID: 0000 0001 2242 8989 Förderer ID Typ: ISNI Förderprogramm: EMPIR 2017 Fundamental Titel der Förderung: 17FUN09: UnipHied: Realisation of a Unified pH Scale Förderungsnummer: 17FUN09 |
| Förderinformationen (2) |
Förderername: Estonian Research Council (ETAg)
Förderer ID: 0000 0004 5908 0906 Förderer ID Typ: ISNI Förderungsnummer: PSG723 |
Zitierung
Bastkowski, F., Heering, A., Uysal, E., Liv, L., Leito, I., Quendera, R., Ribeiro, L., Deleebeeck, L., Snedden, A., Nagy, D., Nagyné Szilágyi, Z., Camões, F., Anes, B., Roziková, M., & Stoica, D. (2024). Rigorous pH measurement in nonaqueous solution: measurement method and reference values in ethanol. Analytical and Bioanalytical Chemistry, 416, 461–465. https://doi.org/10.1007/s00216-023-05043-5