English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/13010
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:


Raman spectroscopy of the system iron(III)-sulfuric acid-water: an approach to Tinto River's (Spain) hydrogeochemistry

AuthorsSobrón, Pablo ; Rull, Fernando ; Sobrón, Francisco; Sanz-Arranz, Aurelio; Medina, Jesús ; Nielsen, C. J.
KeywordsAcid mine waters
Raman spectroscopy
Issue Date1-Aug-2007
CitationSpectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 68(4): 1138-1142 (2007)
AbstractAcid mine drainage is formed when pyrite (FeS2) is exposed and reacts with air and water to form sulfuric acid and dissolved iron. Tinto River (Huelva, Spain) is an example of this phenomenon. In this study, Raman spectroscopy has been used to investigate the speciation of the system iron(III)–sulfuric acid–water as an approach to Tinto River's aqueous solutions. The molalities of sulfuric acid (0.09 mol/kg) and iron(III) (0.01–1.5 mol/kg) were chosen to mimic the concentration of the species in Tinto River waters. Raman spectra of the solutions reveal a strong iron(III)–sulfate inner-sphere interaction through the ν1 sulfate band at 981 cm−1 and its shoulder at 1005 cm−1. Iron(III)–sulfate interaction may also be facilitated by hydrogen bonds and monitored in the Raman spectra through the symmetric stretching band of bisulfate at 1052 cm−1 and a shoulder at 1040 cm−1. Other bands in the low-frequency region of the Raman spectra are attributed to the hydrogen-bonded complexes formation as well.
Description5 pages, 2 figures, 2 tables.-- PMID: 17869164 [PubMed].-- Printed version published Dec 15, 2007.-- ISI Article Identifier: 000251747000020.
Issue title: Seventh International Conference on Raman Spectroscopy Applied to the Earth and Planetary Sciences (Granada, Spain, June 4-7, 2006).
Publisher version (URL)http://dx.doi.org/10.1016/j.saa.2007.06.044
Appears in Collections:(CAB) Artículos
Files in This Item:
There are no files associated with this item.
Show full item record
Review this work

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.