Rigorous pH measurements in non-aqueous solution: measurement method and reference value in ethanol

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00177016%3A_____%2F23%3AN0000062" target="_blank" >RIV/00177016:_____/23:N0000062 - isvavai.cz</a>
Result on the web
<a href="https://link.springer.com/article/10.1007/s00216-023-05043-5" target="_blank" >https://link.springer.com/article/10.1007/s00216-023-05043-5</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s00216-023-05043-5" target="_blank" >10.1007/s00216-023-05043-5</a>

Result language
angličtina
Original language name
Rigorous pH measurements in non-aqueous solution: measurement method and reference value in ethanol
Original language description
The recently introduced unified pH (pH H2O abs ) 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 pH H2O abs 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 pH H2O abs 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 pH H2O abs measurement. This is an important step towards wider adoption of the pH H2O abs concept in practice, like liquid chromatography, biofuels analysis and electrocatalysis.
Czech name
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Czech description
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Project
<a href="/en/project/8B18003" target="_blank" >8B18003: Realisation of unified pH Scale</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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