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Article Dans Une Revue Journal of Anthropological Sciences Année : 2011

A new method for relative Sr determination in human teeth enamel

Fernando V. Alvira
  • Fonction : Auteur
Gustavo R. Torchia
  • Fonction : Auteur
Luis Roso
  • Fonction : Auteur
Gabriel M. Bilmes
  • Fonction : Auteur

Résumé

We present a new method to determine Sr/Ca changes in hard dental tissues based on laser ablation and spectroscopic detection. By using femtosecond Laser Induced Breakdown Spectroscopy (fs- LIBS), we micro mapped the relative amount of strontium in the enamel of three human lower third molar. We also analyzed the Sr/Ca ratio along the striae of Retzius. Results show that microlibs allows detection of variation in relative Sr/Ca ratio through enamel. The same values of Sr/Ca ratio were found along a single stria. The method has a precision better than 95% and is sensitive enough to detect Sr/Ca ratio variations among striae and within stria. Fs-LIBS generates information in a fast and simple way that can be used by non-specialists to make inferences about diet or mobility in human populations and fossil hominids.
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Dates et versions

hal-00817367 , version 1 (24-04-2013)

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Fernando V. Alvira, Fernando V. Ramirez Rozzi, Gustavo R. Torchia, Luis Roso, Gabriel M. Bilmes. A new method for relative Sr determination in human teeth enamel. Journal of Anthropological Sciences, 2011, 89, pp.153-160. ⟨10.4436/jass.89012⟩. ⟨hal-00817367⟩

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