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14C Activity in Different Sections and Chemical Fractions of Oak Tree Rings, AD 1938–1981

Published online by Cambridge University Press:  18 July 2016

Ingrid U. Olsson  and
Göran Possnert
Ingrid U. Olsson
Affiliation:
C Laboratory, Department of Physics, Uppsala University, Box 530, S-751 21 Uppsala, Sweden
Göran Possnert
Affiliation:
The Svedberg Laboratory, Uppsala University, Box 533, S-751 21 Uppsala, Sweden
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Abstract

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The 14C activity in rings from an oak tree grown in a suburb of Uppsala, Sweden has been studied for the period, AD 1938 to 1981. We compare the results with the atmospheric carbon dioxide records from Abisko, northern Sweden, where local or regional contamination from fossil-fuel combustion can be disregarded. We assess the influence from different chemical pretreatment procedures in use and compare HCl-NaOH-HCl treatment with cellulose extraction. We split each ring into two samples corresponding to early (spring) and late wood. A more refined partitioning has been applied to the years 1963 and 1964.

Type
III. Global 14C Production and Variation
Information
Radiocarbon , Volume 34 , Issue 3: Proceedings of the 14th International Radiocarbon Conference , 1992 , pp. 757 - 767
Copyright
Copyright © The American Journal of Science 

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