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Minimally Destructive Radiocarbon Dating of Bone.

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This summary is machine-generated.

A new water-based method allows radiocarbon dating of bone with minimal damage. This minimally destructive collagen extraction provides accurate dates, preserving precious archaeological artifacts.

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Area of Science:

  • Archaeometry
  • Biogeochemistry
  • Paleoproteomics

Background:

  • Bone is crucial for radiocarbon dating but current methods are destructive.
  • Existing non-destructive techniques are not established for bone radiocarbon dating.
  • This study investigates a novel approach for non-destructive bone dating.

Purpose of the Study:

  • To develop and validate a minimally destructive method for radiocarbon dating of bone.
  • To assess the feasibility of using hot water extraction for collagen isolation.
  • To compare radiocarbon dates obtained from the new method with traditional destructive techniques.

Main Methods:

  • Utilized a hot water (75°C and 90°C) extraction technique to isolate soluble collagen from whole bone and teeth.
  • Purified the extracted collagen and performed Accelerator Mass Spectrometry (AMS) radiocarbon dating.
  • Applied the method to bone and teeth samples from various archaeological periods (Bronze Age, Middle and Upper Paleolithic).

Main Results:

  • Hot-water-extracted collagen showed comparable amino acid composition and isotopic values (C/N, δ13C, δ15N) to conventionally extracted collagen.
  • Radiocarbon dates from the minimally destructive method aligned well with previously obtained dates using destructive methods.
  • The technique was successfully applied to ancient bone and teeth samples, yielding reliable results.

Conclusions:

  • Minimally destructive collagen extraction using hot water, followed by purification, yields accurate radiocarbon ages comparable to destructive methods.
  • This approach preserves the integrity of valuable bone and teeth samples, avoiding visible external damage.
  • The method holds potential for dating precious artifacts, ornaments, and museum objects without significant alteration.