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    Increase of 14C Activity of Dissolved Inorganic Carbon Along a River Course

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    Author
    Srdoč, Dušan
    Krajcar-Bronić, Ines
    Horvatinčić, Nada
    Obelić, Bogomil
    Issue Date
    1986-01-01
    Keywords
    Korana River
    hydrology
    inorganic materials
    Yugoslavia
    surveys
    equations
    mathematical models
    numerical analysis
    Southern Europe
    Holocene
    Europe
    Cenozoic
    Quaternary
    C 14
    carbon
    isotopes
    radioactive isotopes
    geochemistry
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    Citation
    Srdoč, D., Krajcar-Bronić, I., Horvatinčić, N., & Obelić, B. (1986). Increase of 14C activity of dissolved inorganic carbon along a river course. Radiocarbon, 28(2A), 515-521.
    Publisher
    American Journal of Science
    Journal
    Radiocarbon
    Description
    From the 12th International Radiocarbon Conference held in Trondheim, June 24-28, 1985.
    URI
    http://hdl.handle.net/10150/652701
    DOI
    10.1017/S0033822200007669
    Additional Links
    http://radiocarbon.webhost.uits.arizona.edu/
    Abstract
    Results of measurements for 3 years (1981-1983) of 14C activity of dissolved inorganic carbon (DIC) in water samples from the Korana River, as well as that of recent tufa and aquatic plants, showed that 14C concentration increases from karst spring to the estuary. A model describing the increase of 14C activity was developed assuming that the increase is due to the exchange of the dissolved CO2 in stream water with atmospheric CO2 and to dissolution of CO2 from the decay of organic material and root respiration. It is possible to distinguish these two contributions by measuring the delta-13C values of DIC in water. As expected, our data show that the exchange process between atmospheric CO2 and DIC dominates at rapids and waterfalls, while biologic contribution is much higher in lakes and along the lowland flow of the Korana River. Agreement between the calculated and the measured activities supports the proposed mechanisms of chemical and isotopic exchanges in stream waters.
    Type
    Proceedings
    text
    Language
    en
    ISSN
    0033-8222
    ae974a485f413a2113503eed53cd6c53
    10.1017/S0033822200007669
    Scopus Count
    Collections
    Radiocarbon, Volume 28, Number 2A (1986)

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