CEQUINOR   05415
CENTRO DE QUIMICA INORGANICA "DR. PEDRO J. AYMONINO"
Unidad Ejecutora - UE
artículos
Título:
Vanadium Detoxification: On the Interaction of Oxovanadium(IV) and Other Vanadium Species with 2,3-Dimercapto-1-propanesulfonate
Autor/es:
WILLIAMS PAM; BARAN, E. J.
Revista:
Journal of Inorganic Biochemistry
Editorial:
Elsevier
Referencias:
Año: 2008 vol. 102 p. 1195 - 1195
ISSN:
0162-0134
Resumen:
The interaction of the VO(2+) cation with the sodium salt of 2,3-dimercaptopropanesulfonic acid (DMPS) was investigated by electronic absorption spectroscoopy in aqueous solution, in the pH range between 4 and 12. The spectral behavior points to the generation of a [VO(DMPS)2](4-) complex in which the oxocation interacts with two pairs of deprotonated -SH groups of the ligand. By spectrophotometric monitoring it was found that DMPS rapidly reduces vanadates(V) to VO(2+) which may be chelated by an excess of the acid. DMPS produces also the slow reduction of a V2O5 suspension at pH 7.1. The results of this study suggest that DMPS may be a potentially useful detoxification agent for vanadium.
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