Switching between voltammetry and potentiometry in order to determine H+ or OH- ion concentration over the entire pH scale by means of tungsten disk electrode
Апстракт
This study demonstrates that tungsten rotating disk electrode can be used for pH or H+/OH- concentration measurements in practically entire pH range, using the combination of voltammetric and potentiometric techniques. In strong acidic (c(H+) GT 10(-3) mol dm(-3)), and alkaline (c(OH-) GT 10(-3) mol dm(-3)) solutions, rotating tungsten disk electrode can be used as a maintenance-free electrode for voltammetric determination of H+ and OH- ion concentration. After an appropriate electrochemical oxidation, the same electrode, in a stationary regime, may be used as a potentiometric sensor in the range 3 LT pH LT 11, with the response -49.5 +/- 2.3 mV per one pH unit. (C) 2011 Elsevier B.V. All rights reserved.
Кључне речи:
pH measurement / Amperometry / Potentiometry / Rotating disk electrode / TungstenИзвор:
Journal of Electroanalytical Chemistry, 2012, 665, 83-89Финансирање / пројекти:
- Литијум-јон батерије и горивне ћелије-истраживање и развој (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45014)
- Serbian Academy of Science and Arts
DOI: 10.1016/j.jelechem.2011.11.019
ISSN: 1572-6657
WoS: 000300547300014
Scopus: 2-s2.0-84855197685
Колекције
Институција/група
VinčaTY - JOUR AU - Pašti, Igor A. AU - Lazarević-Pašti, Tamara AU - Mentus, Slavko V. PY - 2012 UR - https://vinar.vin.bg.ac.rs/handle/123456789/4704 AB - This study demonstrates that tungsten rotating disk electrode can be used for pH or H+/OH- concentration measurements in practically entire pH range, using the combination of voltammetric and potentiometric techniques. In strong acidic (c(H+) GT 10(-3) mol dm(-3)), and alkaline (c(OH-) GT 10(-3) mol dm(-3)) solutions, rotating tungsten disk electrode can be used as a maintenance-free electrode for voltammetric determination of H+ and OH- ion concentration. After an appropriate electrochemical oxidation, the same electrode, in a stationary regime, may be used as a potentiometric sensor in the range 3 LT pH LT 11, with the response -49.5 +/- 2.3 mV per one pH unit. (C) 2011 Elsevier B.V. All rights reserved. T2 - Journal of Electroanalytical Chemistry T1 - Switching between voltammetry and potentiometry in order to determine H+ or OH- ion concentration over the entire pH scale by means of tungsten disk electrode VL - 665 SP - 83 EP - 89 DO - 10.1016/j.jelechem.2011.11.019 ER -
@article{ author = "Pašti, Igor A. and Lazarević-Pašti, Tamara and Mentus, Slavko V.", year = "2012", abstract = "This study demonstrates that tungsten rotating disk electrode can be used for pH or H+/OH- concentration measurements in practically entire pH range, using the combination of voltammetric and potentiometric techniques. In strong acidic (c(H+) GT 10(-3) mol dm(-3)), and alkaline (c(OH-) GT 10(-3) mol dm(-3)) solutions, rotating tungsten disk electrode can be used as a maintenance-free electrode for voltammetric determination of H+ and OH- ion concentration. After an appropriate electrochemical oxidation, the same electrode, in a stationary regime, may be used as a potentiometric sensor in the range 3 LT pH LT 11, with the response -49.5 +/- 2.3 mV per one pH unit. (C) 2011 Elsevier B.V. All rights reserved.", journal = "Journal of Electroanalytical Chemistry", title = "Switching between voltammetry and potentiometry in order to determine H+ or OH- ion concentration over the entire pH scale by means of tungsten disk electrode", volume = "665", pages = "83-89", doi = "10.1016/j.jelechem.2011.11.019" }
Pašti, I. A., Lazarević-Pašti, T.,& Mentus, S. V.. (2012). Switching between voltammetry and potentiometry in order to determine H+ or OH- ion concentration over the entire pH scale by means of tungsten disk electrode. in Journal of Electroanalytical Chemistry, 665, 83-89. https://doi.org/10.1016/j.jelechem.2011.11.019
Pašti IA, Lazarević-Pašti T, Mentus SV. Switching between voltammetry and potentiometry in order to determine H+ or OH- ion concentration over the entire pH scale by means of tungsten disk electrode. in Journal of Electroanalytical Chemistry. 2012;665:83-89. doi:10.1016/j.jelechem.2011.11.019 .
Pašti, Igor A., Lazarević-Pašti, Tamara, Mentus, Slavko V., "Switching between voltammetry and potentiometry in order to determine H+ or OH- ion concentration over the entire pH scale by means of tungsten disk electrode" in Journal of Electroanalytical Chemistry, 665 (2012):83-89, https://doi.org/10.1016/j.jelechem.2011.11.019 . .