Competitive facilitated ion transfer reactions across oil|water interfaces

RODRIGO A IGLESIAS; SERGIO A DASSIE

JOURNAL OF ELECTROANALYTICAL CHEMISTRY

Elsevier

Año: 2002 vol. 533 p. 1 - 1

0022-0728

p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; mso-layout-grid-align: none">In this paper are presented the general equations for a model of competitive facilitated ion transfer reactions across oil|water interfaces. In other words, the transfer of two cations M1z1 (w) and M2z2(w) that, under certain conditions, compete for a neutral ligand is analyzed. The results obtained agree with those of Matsuda and coworkers (J. Electroanal. Chem. 509 (2001) 128) for the same system under limiting conditions and also with the general voltammetric criteria reported by Girault et al. (J. Electroanal. Chem. 449 (1998) 49, J. Electroanal. Chem. 451 (1998) 59) for the facilitated transfer of a single cation assisted by a neutral ligand. The equations reported in this paper allow the cyclic voltammetric response of the system to be simulated under all the possible conditions. The results are analyzed for different zones determined by the ca