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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00177016%3A_____%2F23%3AN0000128" target="_blank" >RIV/00177016:_____/23:N0000128 - isvavai.cz</a>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

The recently introduced unified pH (pH(abs)(H2O)) 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(abs)(H2O) 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(abs)(H2O) 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(abs)(H2O) measurement. This is an important step towards wider adoption of the pH(abs)(H2O) concept in practice, like liquid chromatography, biofuels analysis and electrocatalysis.

Název v anglickém jazyce

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

Popis výsledku anglicky

The recently introduced unified pH (pH(abs)(H2O)) 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(abs)(H2O) 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(abs)(H2O) 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(abs)(H2O) measurement. This is an important step towards wider adoption of the pH(abs)(H2O) concept in practice, like liquid chromatography, biofuels analysis and electrocatalysis.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

10406 - Analytical chemistry

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Analytical and Bioanalytical Chemistry

ISSN

1618-2642

e-ISSN

1618-2650

Svazek periodika

416

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

5

Strana od-do

461-465

Kód UT WoS článku

001122374200002

EID výsledku v databázi Scopus

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