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Tritium and 14C in Tree Rings of the Last Three Decades

Published online by Cambridge University Press:  18 July 2016

Kristóf Kozák ,
Bogomil Obelić  and
Nada Horvatinčić
Kristóf Kozák
Affiliation:
Institute of Isotopes of the Hungarian Academy of Sciences POB 77, 1525 Budapest, Hungary
Bogomil Obelić
Affiliation:
Institute of Isotopes of the Hungarian Academy of Sciences POB 77, 1525 Budapest, Hungary
Nada Horvatinčić
Affiliation:
Institute of Isotopes of the Hungarian Academy of Sciences POB 77, 1525 Budapest, Hungary
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Abstract

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Tree rings spanning the past three decades were collected from Picea spp trees grown in Matra, northern Hungary. Cellulose was prepared from the wood and samples were separately combusted for tritium and 14C analyses. Methane was synthesized from CO2 obtained by sample combustion via catalytic reaction with tritium-free hydrogen. 14C activity was measured by proportional counter. The exchangeable tritium was removed from cellulose samples used for tritium analysis. Water samples produced by combustion were measured by liquid scintillation counting. The distribution of tritium and 14C activities in tree rings are shown for years 1956–1986. Results are compared with published data on global-scale distribution of 14C and HTO. A comparison of tritium activity in precipitation and wine samples from the same region is presented.

Type
III. Global 14C Variations
Information
Radiocarbon , Volume 31 , Issue 3: June 20-25, 1988 Dubrovnik, Yugoslavia , 1989 , pp. 766 - 770
Copyright
Copyright © The American Journal of Science 

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