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

Barré, Thierry and Arurault, Laurent and Sauvage, François Chemical behavior of tungstate solutions. Part 1. A spectroscopic survey of the species involved. (2005) Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, vol. 6 (n° 4). pp. 551-557. ISSN 1386-1425

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Official URL: http://dx.doi.org/10.1016/j.saa.2004.05.005

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.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy :http://www.sciencedirect.com/science/journal/13861425
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Other partners > Oerlikon Balzers Coating (LUXEMBOURG)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Other partners > Hautes Etudes d'Ingénieur - HEI (FRANCE)
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
French research institutions > Centre National de la Recherche Scientifique - CNRS
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Deposited By:Thomas Bonnecarere

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