XANES, UV-VIS and luminescence spectroscopic study of chromophores in ancient HIMT glass
| Autor: | Glauco Ponterini, Lavinia de Ferri, Simona Quartieri, Rossella Arletti |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
HIMT
Materials science Archaeological glass XANES UV-Vis spectroscopy HIMT glass Chromophores in ancient glass chemistry.chemical_element Mineralogy Settore GEO/09 - Georisorse Miner.Appl.Mineral.-Petrogr.per l'amb.e i Beni Cul Colour UV-VIS color chromophores Ultraviolet visible spectroscopy Geochemistry and Petrology Oxidation state Settore CHIM/12 - Chimica dell'Ambiente e dei Beni Culturali Magnesium Chromophore Chromophores Settore FIS/07 - Fisica Applicata(Beni Culturali Ambientali Biol.e Medicin) Combined approach Crystallography chemistry Luminescence Titanium |
| Zdroj: | European Journal of Mineralogy. 23:969-980 |
| ISSN: | 0935-1221 |
| DOI: | 10.1127/0935-1221/2011/0023-2125 |
| Popis: | A series of Late Roman glass fragments belonging to the peculiar group called HIMT (High Iron Magnesium Titanium glass), coming from two archaeological sites in Northern Italy (Modena province and Galeata excavations) and from Catania Roman amphitheatre, were studied by XANES, UV-VIS and luminescence spectroscopies to determine the distribution of the oxidation states of the two chromophores Fe and Mn. The samples, characterized by different colour nuances, were previously chemically characterized. In all the ancient glass samples, Fe results to be mostly in the trivalent state. XANES data indicate that the prevalent Mn oxidation state is 2+, however the presence of minor amounts of Mn 3+ is clearly proved by UV-VIS investigations. The different spectroscopic techniques, used in a combined approach, allow for the interpretation of the apparent anomalous colour of some of the ancient glass samples. |
| Databáze: | OpenAIRE |
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