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

Published online by Cambridge University Press:  18 July 2016

G M Santos ,
R B Moore ,
J R Southon ,
S Griffin ,
E Hinger  and
D Zhang
G M Santos*
Affiliation:
Earth System Science, University of California, Irvine, B321 Croul Hall, Irvine, California 92697-3100, USA
R B Moore
Affiliation:
Earth System Science, University of California, Irvine, B321 Croul Hall, Irvine, California 92697-3100, USA
J R Southon
Affiliation:
Earth System Science, University of California, Irvine, B321 Croul Hall, Irvine, California 92697-3100, USA
S Griffin
Affiliation:
Earth System Science, University of California, Irvine, B321 Croul Hall, Irvine, California 92697-3100, USA
E Hinger
Affiliation:
Earth System Science, University of California, Irvine, B321 Croul Hall, Irvine, California 92697-3100, USA
D Zhang
Affiliation:
Earth System Science, University of California, Irvine, B321 Croul Hall, Irvine, California 92697-3100, USA
*
Corresponding author. Email: [email protected]
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Abstract

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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.

Type
Articles
Information
Radiocarbon , Volume 49 , Issue 2 , 2007 , pp. 255 - 269
Copyright
Copyright © 2007 by the Arizona Board of Regents on behalf of the University of Arizona 

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