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

2007/01/01 by G M Santos, Guaciara M. Santos, Robert B. Moore +9 · 4 citations
Environmental Science · Earth and Planetary Sciences · #Isotope Analysis in Ecology #Archaeology and ancient environmental studies #Geology and Paleoclimatology Research

paper · pdf · doi:10.1017/s0033822200042181

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 14 C-free samples.

Citations

• Magnesium Perchlorate as an Alternative Water Trap in AMS Graphite Sample Preparation: A Report On Sample Preparation at Kccams at the University of California, Irvine

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