| Autor: |
A. Jutand, Y. Rollin, Christian Amatore, Mohamed Azzabi, Christine Lefrou, P. Calas |
| Rok vydání: |
1990 |
| Předmět: |
|
| Zdroj: |
Journal of Electroanalytical Chemistry and Interfacial Electrochemistry. 288:45-63 |
| ISSN: |
0022-0728 |
| DOI: |
10.1016/0022-0728(90)80024-z |
| Popis: |
A method elaborated from original work by Lingane is discussed and used to determine the absolute value of the electron stoichiometry corresponding to any electrochemical wave, under the exact conditions of its observation. The method is based on comparison of the currents measured by a pair of microscale techniques such as chronoamperometry, cyclic voltammetry, RDE or steady state methods at microelectrodes. From an evaluation of the uncertainties associated with the use of each possible pair, it is concluded that the best choice consists in chronoamperometry and a steady state method at a microelectrode. The experimental validity of the method is examined in five different cases pertaining to organic or organometallic electrochemistry, in which the determination of the absolute value of the number of electrons exchanged leads to important mechanistic or synthetic consequences. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
