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    Update on the Performance of the SUERC In Situ Cosmogenic 14C Extraction Line

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    Author
    Fulöp, R. H.
    Naysmith, P.
    Cook, G. T.
    Fabel, D.
    Xu, S.
    Bishop, P.
    Issue Date
    2010-01-01
    
    Metadata
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    Citation
    Fülöp, R. H., Naysmith, P., Cook, G. T., Fabel, D., Xu, S., & Bishop, P. (2010). Update on the performance of the SUERC in situ cosmogenic 14C extraction line. Radiocarbon, 52(3), 1288-1294.
    Publisher
    Department of Geosciences, The University of Arizona
    Journal
    Radiocarbon
    Description
    From the 20th International Radiocarbon Conference held in Kona, Hawaii, USA, May 31-June 3, 2009.
    URI
    http://hdl.handle.net/10150/654378
    DOI
    10.1017/S0033822200046373
    Additional Links
    http://radiocarbon.webhost.uits.arizona.edu/
    Abstract
    In this paper, we describe improvements to the in situ cosmogenic radiocarbon extraction system at SUERC made since 2004, highlighting the factors that potentially control the reduction of analytical variability. We also present new results on system blanks and of measurements of in situ 14C in shielded quartz and a surface quartz sample used at the University of Arizona as an in situ 14C standard (PP-4). The SUERC in situ 14C extraction system was built in 2001 and is based on a combustion technique following the design of the extraction system at the University of Arizona. Our preliminary results suggest that the continuous running of the extraction system and the monitoring of gas collecting time and of the temperature of the cryogenic traps used in the gas cleaning steps are key to maintaining low and stable system blanks. Our latest average system blank is 2.02 +/- 0.23 x 105 14C atoms. This is consistent with those recently published by the University of Arizona and ETH in situ 14C labs. Measurements of in situ 14C concentrations in sample PP-4 yield an average of 3.82 +/- 0.23 x 105 atoms g-1 quartz, again consistent with published values.
    Type
    Proceedings
    text
    Language
    en
    ISSN
    0033-8222
    ae974a485f413a2113503eed53cd6c53
    10.1017/S0033822200046373
    Scopus Count
    Collections
    Radiocarbon, Volume 52, Number 3 (2010)

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