AMS 14C Sample Preparation at the KCCAMS/UCI Facility: Status Report and Performance of Small Samples
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CitationSantos, G. M., Moore, R. B., Southon, J. R., Griffin, S., Hinger, E., & Zhang, D. (2007). AMS 14C sample preparation at the KCCAMS/UCI facility: Status report and performance of small samples. Radiocarbon, 49(2), 255-269.
DescriptionFrom the 19th International Radiocarbon Conference held in Keble College, Oxford, England, April 3-7, 2006.
AbstractWe present an overview of accelerator mass spectrometry (AMS) radiocarbon sample preparation and measurements, describing the technical upgrades that now allow us to routinely obtain 0.2-0.3% precision for 1-mg carbon samples. A precision of ~1% on samples with 100 g of carbon can also be achieved. We have also developed graphitization techniques and AMS procedures for ultra-small samples (down to 0.002 mg of carbon). Detailed time series are presented for large and small aliquots of standards such as NIST OX-I and OX-II; FIRI-C and -D; IAEA-C6, -C7 and -C8; and 14C-free samples.