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First Status Report on Radiocarbon Sample Preparation Techniques at the A.E. Lalonde AMS Laboratory (Ottawa, Canada)

Published online by Cambridge University Press:  15 September 2016

Carley A Crann*
Affiliation:
Department of Earth and Environmental Sciences, and the A.E. Lalonde AMS Laboratory, University of Ottawa, 25 Templeton St, Ottawa Ontario, K1N 6N5, Canada
Sarah Murseli
Affiliation:
Department of Earth and Environmental Sciences, and the A.E. Lalonde AMS Laboratory, University of Ottawa, 25 Templeton St, Ottawa Ontario, K1N 6N5, Canada
Gilles St-Jean
Affiliation:
Department of Earth and Environmental Sciences, and the A.E. Lalonde AMS Laboratory, University of Ottawa, 25 Templeton St, Ottawa Ontario, K1N 6N5, Canada
Xiaolei Zhao
Affiliation:
Department of Physics, and the A.E. Lalonde AMS Laboratory, University of Ottawa, 25 Templeton St, Ottawa Ontario, K1N 6N5, Canada
Ian D Clark
Affiliation:
Department of Earth and Environmental Sciences, and the A.E. Lalonde AMS Laboratory, University of Ottawa, 25 Templeton St, Ottawa Ontario, K1N 6N5, Canada
William E Kieser
Affiliation:
Department of Physics, and the A.E. Lalonde AMS Laboratory, University of Ottawa, 25 Templeton St, Ottawa Ontario, K1N 6N5, Canada
*
*Corresponding author. Email: [email protected].

Abstract

The A.E. Lalonde accelerator mass spectrometer (3MV, HVEE) was commissioned in early 2014 at the University of Ottawa (Canada). The radiocarbon sample preparation laboratory spent the better part of 2014 undertaking a quality control program, establishing pretreatment protocols, and streamlining sample processing. In the fall of 2014, the first unknown samples were accepted and in the first year of operation well over 1000 targets (~60% unknowns) were analyzed. Here, we present an overview of sample processing protocols and results from routinely measured standards, reference, and blank materials.

Type
Chemical Pretreatment Approaches
Copyright
© 2016 by the Arizona Board of Regents on behalf of the University of Arizona 

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Footnotes

Selected Papers from the 2015 Radiocarbon Conference, Dakar, Senegal, 16–20 November 2015

References

REFERENCES

Beaumont, W, Beverly, R, Southon, J, Taylor, RE. 2010. Bone preparation at the KCCAMS laboratory. Nuclear Instruments and Methods in Physics Research B 268(7–8):906909.CrossRefGoogle Scholar
Bird, MI, Ayliffe, LK, Fifield, LK, Turney, CSM, Cresswell, RG, Barrows, TT, David, B. 1999. Radiocarbon dating of ‘old’ charcoal using a wet oxidation-stepped combustion procedure. Radiocarbon 41(2):127140.CrossRefGoogle Scholar
Blake, W Jr. 1987. Geological Survey of Canada radiocarbon dates XXVI. Geological Survey of Canada 86(7):160.Google Scholar
Brock, F, Higham, T, Ditchfield, P, Bronk Ramsey, C. 2010. Current pretreatment methods for AMS radiocarbon dating at the Oxford Radiocarbon Accelerator Unit (ORAU). Radiocarbon 52(1):103112.CrossRefGoogle Scholar
Bronk Ramsey, C, Higham, T, Bowles, A, Hedges, R. 2004. Improvements to the pretreatment of bone at Oxford. Radiocarbon 46(1):155163.CrossRefGoogle Scholar
Coplen, TB, Kendall, C, Hopple, J. 1983. Comparison of stable isotope reference samples. Nature 302(5905):236238.CrossRefGoogle Scholar
DeNiro, MJ, Schoeninger, MJ, Hastorf, CA. 1985. Effect of heating on the stable carbon and nitrogen isotope ratios of bone collagen. Journal of Archaeological Science 12:17.CrossRefGoogle Scholar
Jensen, BJL, Reyes, AV, Froese, DG, Stone, DB. 2013. The Palisades is a key reference site for the middle Pleistocene of eastern Beringia: new evidence from paleomagnetics and regional tephrostratigraphy. Quaternary Science Reviews 63:91108.CrossRefGoogle Scholar
Kieser, WE, Zhao, X-L, Clark, ID, Cornett, RJ, Litherland, AE, Klein, M, Mous, DJW, Alary, J-F. 2015. The André E. Lalonde AMS Laboratory – the new accelerator mass spectrometry facility at the University of Ottawa. Nuclear Instruments and Methods in Physics Research B 361:110114.CrossRefGoogle Scholar
Longin, R. 1971. New method of collagen extraction for radiocarbon dating. Nature 230(5291):241242.CrossRefGoogle ScholarPubMed
Reimer, PJ, Brown, TA, Reimer, RW. 2004. Discussion: reporting and calibration of post-bomb 14C data. Radiocarbon 46(3):12991304.Google Scholar
Reyes, AV, Froese, DG, Jensen, BJL. 2010. Permafrost response to last interglacial warming: field evidence from non-glaciated Yukon and Alaska. Quaternary Science Reviews 29(23–24):32563274.CrossRefGoogle Scholar
Rozanski, K. 1991. Consultants’ group meeting on 14C reference materials for radiocarbon laboratories. February 18–20, 1991, Vienna, Austria. Internal Report, IAEA, Vienna.Google Scholar
Rozanski, K, Stichler, W, Gonfiantini, R, Scott, EM, Beukens, RP, Kromer, B, van der Plicht, J. 1990. The IAEA 14C intercomparison exercise 1990. Radiocarbon 34(3):506519.CrossRefGoogle Scholar
Southon, J. 2007. Graphite reactor memory – Where is it from and how to minimize it? Nuclear Instruments and Methods in Physical Research B 259(1):288292.CrossRefGoogle Scholar
Staff, RA, Reynard, L, Brock, F, Bronk Ramsey, C. 2014. Wood pretreatment protocols and measurement of tree-ring standards at the Oxford Radiocarbon Accelerator Unit (ORAU). Radiocarbon 56(2):709715.CrossRefGoogle Scholar
St-Jean, G, Kieser, WE, Crann, CA, Murseli, S. 2016. Semi-automated equipment for CO2 purification and graphitization at the A.E. Lalonde AMS Laboratory (Ottawa, Canada). Radiocarbon. This issue. DOI:10.1017/RDC.2016.57.CrossRefGoogle Scholar
Stuiver, M, Polach, HA. 1977. Discussion: reporting of 14C data. Radiocarbon 19(3):355363.CrossRefGoogle Scholar
Westgate, JA, Preece, SJ, Jackson, LE Jr. 2011.Revision of the tephrostratigraphy of the lower Sixtymile Riever area, Yukon Territory, Canada. Canadian Journal of Earth Science 48:695701.CrossRefGoogle Scholar