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Radiocarbon Dating of Bone Apatite Using Thermal Release of CO2

Published online by Cambridge University Press:  18 July 2016

Herbert Haas  and
John Banewicz
Herbert Haas
Affiliation:
Southern Methodist University, Dallas, Texas
John Banewicz
Affiliation:
Southern Methodist University, Dallas, Texas
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Abstract

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Extraction of carbon from bone hydroxy apatite as CO2 by heating in an oxygen atmosphere is an alternative method to hydrolysis of the bone. Heating in specific steps allows separation of CO2 fractions from different sources, including weakened or sound bone material and secondary deposits. Pretreatments to remove most secondary carbonate and much of the collagen are necessary. Thermogravimetric (weight loss) curves and CO2 release patterns during heating show that the temperature interval for collection of the most reliable CO2 sample for dating purposes lies between 800 and 950°C. Age dates run on such samples support this conclusion.

Type
Dating Various Materials
Information
Radiocarbon , Volume 22 , Issue 2 , 1980 , pp. 537 - 544
Copyright
Copyright © The American Journal of Science 

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