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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

Published online by Cambridge University Press:  18 July 2016

G M Santos ,
J R Southon ,
K C Druffel-Rodriguez ,
S Griffin  and
M Mazon
G M Santos*
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.
K C Druffel-Rodriguez
Affiliation:
Earth System Science, University of California, Irvine, B321 Croul Hall, Irvine, California 92697-3100, USA. Department of Chemistry, Loyola Marymount University, Seaver Hall, Los Angeles, California, USA.
S Griffin
Affiliation:
Earth System Science, University of California, Irvine, B321 Croul Hall, Irvine, California 92697-3100, USA.
M Mazon
Affiliation:
Earth System Science, University of California, Irvine, B321 Croul Hall, Irvine, California 92697-3100, USA. Department of Biology, California State University, Fullerton, California, USA.
*
Corresponding author. Email: gdossant@uci.edu.
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Abstract

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We present a brief discussion of sample preparation procedures at the Keck Carbon Cycle Accelerator Mass Spectrometer (KCCAMS), University of California, Irvine, and a systematic investigation of the use of Mg(ClO4)2 as an absorptive water trap, replacing the standard dry ice/ethanol cold finger in graphite sample preparation. We compare high-precision AMS measurement results from oxalic acid I and USGS coal samples using Mg(ClO4)2 under different conditions. The results obtained were also compared with those achieved using the conventional water removal technique. Final results demonstrate that the use of Mg(ClO4)2 as an alternative water trap seems very convenient and reliable, provided the Mg(ClO4)2 is replaced frequently.

Type
Articles
Information
Radiocarbon , Volume 46 , Issue 1: Proceedings of the 18th International Radiocarbon Conference (Part 1 of 2), Conference Editors: Nancy Beavan Athfield, Rodger J Sparks , 2004 , pp. 165 - 173
Copyright
Copyright © 2004 by the Arizona Board of Regents on behalf of the University of Arizona 

References

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