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https://hdl.handle.net/1822/2232
Título: | Effect of the medium composition on the current of steady state voltammograms of neutral and charged species in dimethylformamide/toluene mixtures |
Autor(es): | Bento, M. Fátima Geraldo, M. Dulce Montenegro, M. I. |
Palavras-chave: | Microelectrodes Diffusion coefficient Viscosity Migration |
Data: | Abr-1999 |
Editora: | Elsevier 1 |
Revista: | Analytica Chimica Acta |
Citação: | Bento, M. F., Geraldo, M. D., & Montenegro, M. I. (1999). Effect of the medium composition on the current of steady state voltammograms of neutral and charged species in dimethylformamide/toluene mixtures. Analytica Chimica Acta, 385(1), 365-371. doi: https://doi.org/10.1016/S0003-2670(98)00698-9 |
Resumo(s): | Steady state voltammetric currents of both neutral and charged species obtained at microelectrodes are affected by the medium composition. Experiments carried out in N,N-dimethylformamide (DMF) and toluene/DMF mixtures for the reduction of diciano(fluoren-9-ylidene)methane and the methylviologen cation and for the oxidation of ferrocene, in the presence of different electrolyte concentrations indicate that both viscosity of the solution and mass transport by migration may have a strong effect on the measured limiting currents. These observations are particularly important in electroanalysis since the appropriate choice of the medium may substantially improve both the sensitivity and the detection limits of the electrochemical method. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/2232 |
DOI: | 10.1016/S0003-2670(98)00698-9 |
ISSN: | 0003-2670 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CDQuim - Artigos (Papers) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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EFFECT OF THE MEDIUM COMPOSITION ON THE CURRENT OF STEADY STATE VOLTAMMOGRAMS.pdf | 150,17 kB | Adobe PDF | Ver/Abrir |