Raman Study on Pompeii Potteries: The Role of Calcium Hydroxide on the Surface Treatment
Pottery samples from the Pompeii archaeological site were investigated by IR Raman spectroscopy and EDAX measurements. The analysis of the Raman spectra of the surfaces reveals the presence calcium hydroxide (peak at about 780 cm−1) while the calcium carbonate is totally absent. The comparative stud...
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | Journal of Spectroscopy |
| Online Access: | http://dx.doi.org/10.1155/2014/435026 |
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| author | Daniele Chiriu Pier Carlo Ricci Andrea Polcaro Paolo Braconi David Lanzi Davide Nadali |
| author_facet | Daniele Chiriu Pier Carlo Ricci Andrea Polcaro Paolo Braconi David Lanzi Davide Nadali |
| author_sort | Daniele Chiriu |
| collection | DOAJ |
| description | Pottery samples from the Pompeii archaeological site were investigated by IR Raman spectroscopy and EDAX measurements. The analysis of the Raman spectra of the surfaces reveals the presence calcium hydroxide (peak at about 780 cm−1) while the calcium carbonate is totally absent. The comparative studies on the carbonation effect of the surfaces were performed on laboratory grown samples of calcium hydroxide. The samples were treated at high temperature and exposed to different ambient conditions, and the analysis suggests that the original surfaces of Roman pottery were scattered by calcium hydroxide (limewash) before the cooking process in the furnace. The result of this surface treatment not only permits a vitrification of the surfaces but also seems to reduce the content of CO2 in the furnace atmosphere and then obtain a more oxidant ambient during the cooking of the pottery. These results give new insights on the real degree of knowledge of the Romans about the art of ceramics and more generally about chemistry and technologies. |
| format | Article |
| id | doaj-art-b6931115aedb41e6952fb23bf2b77c88 |
| institution | OA Journals |
| issn | 2314-4920 2314-4939 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Spectroscopy |
| spelling | doaj-art-b6931115aedb41e6952fb23bf2b77c882025-08-20T02:23:11ZengWileyJournal of Spectroscopy2314-49202314-49392014-01-01201410.1155/2014/435026435026Raman Study on Pompeii Potteries: The Role of Calcium Hydroxide on the Surface TreatmentDaniele Chiriu0Pier Carlo Ricci1Andrea Polcaro2Paolo Braconi3David Lanzi4Davide Nadali5Dipartimento di Fisica, Università di Cagliari, s.p. n 8 Km 0.700, Monserrato, 09042 Cagliari, ItalyDipartimento di Fisica, Università di Cagliari, s.p. n 8 Km 0.700, Monserrato, 09042 Cagliari, ItalyDipartimento di Lettere-Lingue, Letterature e Civilta’ Antiche E Moderne, Università di Perugia, Via Armonica 3, 06123 Perugia, ItalyDipartimento di Lettere-Lingue, Letterature e Civilta’ Antiche E Moderne, Università di Perugia, Via Armonica 3, 06123 Perugia, ItalyDipartimento di Lettere-Lingue, Letterature e Civilta’ Antiche E Moderne, Università di Perugia, Via Armonica 3, 06123 Perugia, ItalyDipartimento di Scienze dell’Antichità, Sapienza Università di Roma, Via dei Volsci 122, 00185 Roma, ItalyPottery samples from the Pompeii archaeological site were investigated by IR Raman spectroscopy and EDAX measurements. The analysis of the Raman spectra of the surfaces reveals the presence calcium hydroxide (peak at about 780 cm−1) while the calcium carbonate is totally absent. The comparative studies on the carbonation effect of the surfaces were performed on laboratory grown samples of calcium hydroxide. The samples were treated at high temperature and exposed to different ambient conditions, and the analysis suggests that the original surfaces of Roman pottery were scattered by calcium hydroxide (limewash) before the cooking process in the furnace. The result of this surface treatment not only permits a vitrification of the surfaces but also seems to reduce the content of CO2 in the furnace atmosphere and then obtain a more oxidant ambient during the cooking of the pottery. These results give new insights on the real degree of knowledge of the Romans about the art of ceramics and more generally about chemistry and technologies.http://dx.doi.org/10.1155/2014/435026 |
| spellingShingle | Daniele Chiriu Pier Carlo Ricci Andrea Polcaro Paolo Braconi David Lanzi Davide Nadali Raman Study on Pompeii Potteries: The Role of Calcium Hydroxide on the Surface Treatment Journal of Spectroscopy |
| title | Raman Study on Pompeii Potteries: The Role of Calcium Hydroxide on the Surface Treatment |
| title_full | Raman Study on Pompeii Potteries: The Role of Calcium Hydroxide on the Surface Treatment |
| title_fullStr | Raman Study on Pompeii Potteries: The Role of Calcium Hydroxide on the Surface Treatment |
| title_full_unstemmed | Raman Study on Pompeii Potteries: The Role of Calcium Hydroxide on the Surface Treatment |
| title_short | Raman Study on Pompeii Potteries: The Role of Calcium Hydroxide on the Surface Treatment |
| title_sort | raman study on pompeii potteries the role of calcium hydroxide on the surface treatment |
| url | http://dx.doi.org/10.1155/2014/435026 |
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