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    Simple Pretreatment Method Development for Iron and Calcium Carbonate Samples

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    Author
    Park, Junghun
    Hong, Wan
    Choi, Han Woo
    Kim, Joonkon
    Kim, Gi Dong
    Issue Date
    2010-01-01
    
    Metadata
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    Citation
    Park, J., Hong, W., Woo, H. J., Choi, H. W., Kim, J., & Kim, G. D. (2010). Simple Pretreatment Method Development for Iron and Calcium Carbonate Samples. Radiocarbon, 52(3), 1295-1300.
    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/10150/654326
    DOI
    10.1017/S0033822200046385
    Additional Links
    http://radiocarbon.webhost.uits.arizona.edu/
    Abstract
    Since iron artifacts generally contain trace amounts of carbon, an iron sample needs to be relatively large, as compared to other materials, and a specially designed combustion system is required. An elemental analyzer (EA) was used for the combustion of iron without any special chemical treatment. CO2 gas with 1 mg of carbon was obtained from the combustion of an iron artifact by using an EA and reduced to graphite for accelerator mass spectrometry (AMS) measurement. In this work, AMS dating results done at the Korea Institute of Geoscience and Mineral Resources (KIGAM) for several ancient iron artifacts are presented and compared with independently estimated ages. This method was found to be useful for the pretreatment of iron artifacts that contained 0.1% carbon. A simple pretreatment method using an EA was also applied to calcium carbonate (CaCO3) samples. Samples were preheated overnight at 100-300 C, without any special chemical treatment. This removed modern CO2 contamination and the background level decreased to a comparable value measured in samples treated with phosphoric acid under vacuum.
    Type
    Proceedings
    text
    Language
    en
    ISSN
    0033-8222
    ae974a485f413a2113503eed53cd6c53
    10.1017/S0033822200046385
    Scopus Count
    Collections
    Radiocarbon, Volume 52, Number 3 (2010)

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