IQUIR   05412
INSTITUTO DE QUIMICA ROSARIO
Unidad Ejecutora - UE
artículos
Título:
On the Interaction of Vanadium Species with the Monoisoamyl Ester of Meso-2,3-Dimercaptosuccinic Acid.
Autor/es:
P. A. M. WILLIAMS, J. ZINCZUK, E. J. BARAN
Revista:
BIOLOGICAL TRACE ELEMENT RESEARCH
Editorial:
HUMANA PRESS INC
Referencias:
Lugar: Heidelberg; Año: 2010 vol. 134 p. 220 - 225
ISSN:
0163-4984
Resumen:
Abstract The interaction of the VO2+ cation with the monoisoamyl ester of meso-2,3-dimercaptosuccinic acid (MiADMSA) was investigated by electron absorption spectroscopyin aqueous solutions at different pH values. The spectral behavior, complemented with aspectrophotometric titration, shows the generation of a [VO(MiADMSA)2]4− complex inwhich the oxocation interacts with two pairs of deprotonated –SH groups of the ester.Besides, MiADMSA rapidly reduces VO3− to VO2+, which might be chelated by an excessof the ester, and also produces relatively rapid reduction of V2O5 suspensions at pH=6.5.The results of this study suggest that MiADMSA might be a potentially usefuldetoxification agent for vanadium.