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Sample preparation methods used at the Australian National University Radiocarbon facility

Abstract:
The Single Stage AMS radiocarbon facility at the Australian National University has operated for the past 14 years. This paper presents the pretreatment methods used for the major sample types dated and reflects on whether quality assurance protocols can adequately detect altered materials. The majority of fossil samples dated by the facility are from tropical and arid environments where diagenesis of both organic samples and carbonates is often severe. A large proportion of the samples submitted cannot be dated, and screening and quality assurance methods are crucial. Based on analysis of 250 measurements on bone collagen, quality assurance indicators for bone are revised. From May 2021, the laboratory has accepted dates on collagen where yield >0.5%, %C is in the range of 39.7–46.9, and the C:N ratio is between 3.00 and 3.30.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1017/RDC.2022.97

Authors


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Institution:
University of Oxford
Division:
SSD
Department:
School of Archaeology
Role:
Author


Publisher:
Cambridge University Press
Journal:
Radiocarbon More from this journal
Volume:
65
Issue:
2
Pages:
573–589
Publication date:
2023-02-03
Acceptance date:
2023-01-10
DOI:
EISSN:
1945-5755
ISSN:
0033-8222


Language:
English
Keywords:
Pubs id:
1326219
Local pid:
pubs:1326219
Deposit date:
2023-01-30

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