A new calibration of the XRD technique for the study of archaeological burned human remains |
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Authors: | Giampaolo Piga Assumpciò Malgosa TJU Thompson Stefano Enzo |
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Institution: | 1. Unitat d''Antropologia, Department de Biologia Animal, Biologia Vegetal i Ecologia, Universitat Autonoma de Barcelona, 08193 Bellaterra, Spain;2. School of Science & Technology, University of Teesside, TS1 3BA Middlesbrough, UK;3. Department of Chemistry, University of Sassari, Via Vienna 2, 07100 Sassari, Italy |
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Abstract: | A new calibration of human bones as a function of programmed temperature (200–1000 °C) and time (0, 18 and 60 min) is presented and discussed in order to investigate the issues related to the study of cremated bone remains by using the powder X-ray diffraction approach. The experimental results confirm the growth of hydroxylapatite crystallites as a function of the applied temperature, with a sigmoid behaviour that has been parameterized to the experimental data points. Particularly, it was observed that the thermal treatments for 60 min anticipate of about 100 °C the effects that are otherwise observed after the treatments for 0 min. The developed procedure was subsequently applied to cremated remains of various archaeological sites of Spain and supplied precise information not only about the temperature reached during the funerary rites, but also on the presumed duration for the cremation. |
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Keywords: | Cremated bones Hydroxylapatite Powder X-ray diffraction |
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