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AMS 14C Sample Preparation at the KCCAMS/UCI Facility: Status Report and Performance of Small Samples

  • G M Santos (a1), R B Moore (a1), J R Southon (a1), S Griffin (a1), E Hinger (a1) and D Zhang (a1)...

Abstract

We 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 μg 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.

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Copyright

Corresponding author

Corresponding author. Email: gdossant@uci.edu

References

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