On the interaction of vanadium species with meso-2,3-dimercaptosuccinic acid

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作者
P. A. M. Williams
E. J. Baran
机构
[1] Universidad Nacional de La Plata,Centro de Química Inorgánica (CEQUINOR/CONICET,UNLP), Facultad de Ciencias Exactas
关键词
2,3-Dimercaptosuccinic acid; oxovanadium(IV); vanadium (V); interactions; electronic spectra; vanadium detoxification;
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摘要
The interaction of the VO2+ cation with meso-2,3-dimercaptosuccinic acid (DMSA) was investigated by electron absorption spectroscopy in aqueous solution at different pH values. The spectral behavior, complemented with a spectrophotometric titration, shows the generation of a [VO(DMSA)2]2− complex in which the oxocation interacts with two pairs of deprotonated-SH groups of the acid. It was also found that DMSA rapidly reduces VO3− to VO2+, which might be chelated by an excess of the acid. DMSA can also produce the partial reduction of a V2O5 suspension at pH=5.2. The results of this study suggest that DMSA might be a potentially useful detoxification agent for vanadium.
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页码:189 / 194
页数:5
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