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| Azevedo, Nuno Monteiro |
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Snoeck, Christophe
Vrije Universiteit Brussel
in Cooperation with on an Cooperation-Score of 37%
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article
When Dental Enamel is Put to the Acid Test: Pretreatment Effects and Radiocarbon Dating
Abstract
<jats:title>Abstract</jats:title><jats:p>The influence of hydrochloric acid pretreatment on F<jats:sup>14</jats:sup>C and radiocarbon dates from dental enamel was investigated. Samples from modern equine incisors, a Roman cattle molar, and a Paleolithic woolly rhino molar were sampled and subsequently divided into five fractions. Each fraction was pretreated with a different acid solution, analyzed with Fourier transform infrared spectroscopy (FTIR), and accelerator mass spectrometry (AMS) <jats:sup>14</jats:sup>C dated at the Oxford Radiocarbon Accelerator Unit (ORAU). When compared to a control date (e.g. dentine collagen), better results were observed when increased concentrations of hydrochloric acid solution were used in the chemical pretreatment. This pilot study suggests that decontamination of younger samples may be possible. However, for more fossilized samples with a high level of contamination (e.g. from the European Paleolithic), acid pretreatment under the conditions used in this study does not remove all contamination.</jats:p>