| Literature DB >> 15649783 |
Thierry Barré1, Laurent Arurault, François X Sauvage.
Abstract
This study is focused on the composition and the evolution of tungstate ions solutions as a function of pH and increasing concentrations. The Raman analysis showed that, during the titration of the tungstate solutions, WO4(2-), HWO4- ions and probably W2O7(2-) , HW2O7(2-) and H2W2O7 solvated species could exist in aqueous solutions. For diluted solutions, additions of a strong acid does not cause any precipitation, whereas the formation of the unstable solid tungstic acid (H2WO4 or WO3.H2O) could occur in concentrated solutions.Entities:
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Year: 2005 PMID： 15649783 DOI： 10.1016/j.saa.2004.05.005
Source DB: PubMed Journal: Spectrochim Acta A Mol Biomol Spectrosc ISSN： 1386-1425 Impact factor: 4.098