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dc.contributor.authorPrieto Taboada, Nagore
dc.contributor.authorGómez Laserna, Olivia
dc.contributor.authorMartínez Arkarazo, Irantzu
dc.contributor.authorOlazabal Dueñas, María Ángeles
dc.contributor.authorMadariaga Mota, Juan Manuel
dc.date.accessioned2025-01-23T19:27:17Z
dc.date.available2025-01-23T19:27:17Z
dc.date.issued2014-09-16
dc.identifier.citationAnalytical Chemistry 86(20) : 10131-10137 (2014)es_ES
dc.identifier.issn0003-2700
dc.identifier.issn1520-6882
dc.identifier.urihttp://hdl.handle.net/10810/71778
dc.description.abstractAlthough it is known that the CaSO4/H2O system is formed by at least five different phases, this fact is not correctly documented in Raman spectroscopy studies. The main problem detected in the literature was the incorrect definition of the anhydrite, which produced the assignation of different spectra for a single compound. In this sense, two different spectra were clearly identified from the bibliography, which showed different main Raman bands at 1017 or 1025 cm-1, although anhydrite could be present even as three different polymorphous species with different structures. A better knowledge of the whole system obtained from a review of the literature allowed new conclusions to be established. Thanks to that revision and the development of different thermodynamical experiments by Raman spectroscopy, the Raman spectra of each phase were successfully identified for the first time. In this way, the main Raman bands of gypsum-bassanite-anhydrite III-anhydrite II-anhydrite I were identified at 1008-1015-1025-1017-1017 cm-1 respectively. To conclude this work, the contradictions found in literature were critically summarized.es_ES
dc.description.sponsorshipThis work has been financially supported by the project PRIACE (ref: CTM2012-36612) from the Spanish Ministry of Economy and Competitiveness (MINECO). N. Prieto-Taboada and O. Gómez-Laserna acknowledge their grants from the University of the Basque Country. Technical and human support provided the Raman-LASPEA and X-ray diffraction laboratories by SGIker (UPV/EHU, MICINN, GV/EJ, ERDF and ESF) are also gratefully acknowledged.es_ES
dc.language.isoenges_ES
dc.publisherACSes_ES
dc.relationinfo:eu-repo/grantAgreement/MINECO/CTM2012-36612es_ES
dc.rightsinfo:eu-repo/semantics/openAccesses_ES
dc.subjectRaman spectroscopyes_ES
dc.subjectgypsumes_ES
dc.subjectinsoluble anhydritees_ES
dc.subjectsoluble anhydritees_ES
dc.subjectbassanitees_ES
dc.titleThe Raman spectra of the different phases in the CaSO4-H2O systemes_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.rights.holder© 2014 American Chemical Societyes_ES
dc.relation.publisherversionhttps://doi.org/10.1021/ac501932fes_ES
dc.identifier.doi10.1021/ac501932f
dc.departamentoesQuímica analíticaes_ES
dc.departamentoeuKimika analitikoaes_ES


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