| Zugriffsnummer | 44977 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | mit Peer Review |
| Sprache | Englisch |
| Titel | Symmetric potentiometric cells for the measurement of unified pH values. |
| Autor(in); Institution |
Heering, Agnes; 3.1, Allgemeine und Anorganische Chemie, PTB-Braunschweig; Institute of Chemistry, University of Tartu (UT), Tartu, ESTONIA
Stoica, Daniela; Laboratoire National de Métrologie et d’Essais (LNE), Paris, FRANCE
Camões, Filomena; FCiências. ID (FC.ID), Centro de Química Estrutural, Faculdade de Ciências da Universidade de Lisboa, Lisboa, PORTUGAL
Anes, Bárbara; FCiências. ID (FC.ID), Centro de Química Estrutural, Faculdade de Ciências da Universidade de Lisboa, Lisboa, PORTUGAL
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
Quendera, Raquel; Instituto Português da Qualidade (IPQ), Caparica, PORTUGAL
Ribeiro, Luís; Instituto Português da Qualidade (IPQ), Caparica, PORTUGAL
Bastkowski, Frank; 3.1, Allgemeine und Anorganische Chemie, PTB-Braunschweig
Born, Rasmus; Institute of Chemistry, University of Tartu (UT), Tartu, ESTONIA
Nerut, Jaak; Institute of Chemistry, University of Tartu (UT), Tartu, ESTONIA
Saame, Jaan; Institute of Chemistry, University of Tartu (UT), Tartu, ESTONIA
Lainela, Silvie; Institute of Chemistry, University of Tartu (UT), Tartu, ESTONIA; Laboratoire National de Métrologie et d’Essais (LNE), Paris, FRANCE
Liv, Lokman; The Scientific and Technological Research Council of Turkey-National Metrology Institute (TUBITAK UME), Gebze, TURKEY
Uysal, Emrah; The Scientific and Technological Research Council of Turkey-National Metrology Institute (TUBITAK UME), Gebze, TURKEY
Roziková, Matilda; Czech Metrology Institute (CMI), Brno, CZECH REPUBLIC
Viˇcarová, Martina; Czech Metrology Institute (CMI), Brno, CZECH REPUBLIC; Slovak University of Technology, Faculty of Mechanical Engineering, Bratislava, SLOVAKIA
Snedden, Alan; DFM A/S, Hørsholm, DENMARK
Deleebeeck, Lisa; DFM A/S, Hørsholm, DENMARK
Radtke, Valentin; Institut für Anorganische und Analytische Chemie, University of Freiburg, Freiburg, GERMANY
Krossing, Ingo; Institut für Anorganische und Analytische Chemie, University of Freiburg, Freiburg, GERMANY
Leito, Ivo; Institute of Chemistry, University of Tartu (UT), Tartu, ESTONIA
|
| Quelle/Jahr | Symmetry: 12 (2020), 7, 1150 |
| Availability | [online only] |
| ISSN | 2073-8994 |
| DOI | |
| Verlag | Basel: MDPI |
| Freie Schlagworte | unified pH scale ; pHabs ; all solvents ; differential potentiometry ; liquid junction ; ionic liquid |
| Zusammenfassung | A unified pH scale of absolute values (pHabs scale) enables the comparison of acidities in different solvents. To date, very few different experimental setups have been used for the measurement of values on this scale. The article describes the design and performance of the different symmetric cells used for unified pH measurement by several institutions. Well-established and reliable standard aqueous buffer solutions are the first step of method validation necessary to achieve a robust metrological level for more complex media. The pH of aqueous standard buffers was measured by differential potentiometry, where the potential between two glass electrodes is measured directly. All the tested electrochemical cells prove to be suitable for unified pH measurements. This validation highlights that the method is, to a large extent, independent of the used equipment, including the cell geometry. The inherent symmetry of the cell design helps to reduce the experimental workload and improve the accuracy of obtained results. |
| Kostenfreier Zugang | Open Access Gold |
| Rechteinformation | CC BY 4.0 ; Creative Commons Attribution 4.0 License |
| Themenbereich der Metrologie | Metrologie in der Chemie und Stoffeigenschaften |
| Forschungsprojekt | European Unions's Horizon 2020 research and innovation (UnipHied) |
Zitierung
Heering, A., Stoica, D., Camões, F., Anes, B., Nagy, D., Nagyné Szilágyi, Z., Quendera, R., Ribeiro, L., Bastkowski, F., Born, R., Nerut, J., Saame, J., Lainela, S., Liv, L., Uysal, E., Roziková, M., Viˇcarová, M., Snedden, A., Deleebeeck, L., Radtke, V., Krossing, I., & Leito, I. (2020). Symmetric potentiometric cells for the measurement of unified pH values. Symmetry, 12(7), 1150. https://doi.org/10.3390/sym12071150