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  • Title: On the interaction of vanadium species with the monoisoamyl ester of meso-2,3-dimercaptosuccinic acid.
    Author: Williams PA, Zinczuk J, Baran EJ.
    Journal: Biol Trace Elem Res; 2010 May; 134(2):220-5. PubMed ID: 19652926.
    Abstract:
    The interaction of the VO2+ cation with the monoisoamyl ester of meso-2,3-dimercaptosuccinic acid (MiADMSA) was investigated by electron absorption spectroscopy in aqueous solutions at different pH values. The spectral behavior, complemented with a spectrophotometric titration, shows the generation of a [VO(MiADMSA)2](4-) complex in which 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 excess of 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 useful detoxification agent for vanadium.
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