Abstract
The possibility of carbon dioxide sorption by materials of organic origin and the consequent isotope exchange is assumed as an important problem in radiocarbon dating. Using carbon dioxide labeled by carbon-14, the sorption of carbon dioxide by linen and cotton cloth was shown. Exposition of linen cloth in sodium (C-14)-carbonate solution for 250 d with consequent strong washing and combustion of washed material was used as a model of long-term carbon interaction in the system air-cloth. Up to 5% of not (or hardly) removable C-14 (from labeled sodium carbonate) was detected in linen-cloth. This result can be cosidered as evidence for the possibility of carbon isotope exchange in the system atmospheric carbon dioxide-thin archaeological artifacts during long-term storage in open air.
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Kist, A.A. Carbon isotope exchange and radiocarbon dating. Journal of Radioanalytical and Nuclear Chemistry Letters 176, 339–343 (1993). https://doi.org/10.1007/BF02163499
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DOI: https://doi.org/10.1007/BF02163499