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Hyperfine Interactions

, Volume 192, Issue 1–3, pp 61–67 | Cite as

Mössbauer and infrared spectroscopy as a diagnostic tool for the characterization of ferric tannates

  • Juan A. Jaén
  • César Navarro
Article

Abstract

Fourier transform infrared spectroscopy and Mössbauer spectroscopy are use for the characterization and qualitative analysis of hydrolysable and condensed tannates. The two classes of tannates may be differentiated from the characteristic IR pattern. Mössbauer proof that a mixture of mono- and bis-type ferric tannate complexes, and an iron(II)-tannin complex are obtained from the interaction of hydrolysable tannins (tannic acid and chestnut tannin) and condensed tannins (mimosa and quebracho) with a ferric nitrate solution. At pH 7, a partially hydrolyzed ferric tannate complex was also obtained.

Keywords

Tannate complexes Infrared spectroscopy Mössbauer spectroscopy Hydrolysable tannins Condensed tannins 

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Copyright information

© Springer Science+Business Media B.V. 2009

Authors and Affiliations

  1. 1.Depto. de Química Física, CITEN, Lab. No. 105, Edificio de Laboratorios Científicos-VIPUniversidad de PanamáPanama CityPanama
  2. 2.Escuela de Química, Facultad de Ciencias Naturales, Exactas y TecnologíaUniversidad de PanamáPanama CityPanama

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