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

Bibliographic Data

ID9243000
AuthorsDušan Srdoč, Ines Krajcar-Bronić, Nada Horvatinčić, Bogomil Obelić
Year1986
Volume28
Issue2A
Pages515-521
Publication date1986-01-01
Peer ReviewedYes
Open AccessYes
TypeARTICLE
VenueRadiocarbon (JOURNAL)
Journal identifiersISSN: 0033-8222 • E-ISSN: 1945-5755
PublisherCambridge University Press (CUP) (PUBLISHER)
DOI10.1017/s0033822200007669
OpenAlexW2484574489
LanguageEN
Citations received13
References cited5

Results of measurements for 3 years (1981–1983) of 14 C activity of dissolved inorganic carbon (DIG) in water samples from the Korana River, as well as that of recent tufa and aquatic plants, showed that 14 C concentration increases from karst spring to the estuary. A model describing the increase of 14 C activity was developed assuming that the increase is due to the exchange of the dissolved CO 2 in stream water with atmospheric CO 2 and to dissolution of CO 2 from the decay of organic material and root respiration. It is possible to distinguish these two contributions by measuring the δ 13 C values of DIC in water. As expected, our data show that the exchange process between atmospheric CO 2 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

Carbon cycle · Carbon dioxide · Carbon fibers · Carbonate · Dissolution · Dissolved organic carbon · Estuary · Karst · Total inorganic carbon · Tufa · Chemistry · Environmental Science · Geology and Paleoclimatology Research · Isotope Analysis in Ecology · Karst Systems and Hydrogeology · Ecology · Environmental Chemistry · Geology · Oceanography

Tools

Open DOISci-HubOpen Access