Article Dans Une Revue Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy [1994-...] Année : 2005

Chemical behavior of tungstate solutions. Part 1: a spectroscopic survey of the species involved

Résumé

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, WO42−, HWO4− ions and probably W2O72−, HW2O72− 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.

Dates et versions

hal-00268690 , version 1 (01-04-2008)

Identifiants

Citer

T. Barré, Laurent Arurault, F.X. Sauvage. Chemical behavior of tungstate solutions. Part 1: a spectroscopic survey of the species involved. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy [1994-..], 2005, 61, pp.551-557. ⟨10.1016/j.saa.2004.05.005⟩. ⟨hal-00268690⟩
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