Effect of labile hydrogens on measurement of tritium preserved in hydrogens of cellulose

The carbon-14 concentration in tree-ring cellulose of an 80-year-old pine tree which has been used for tritium measurement was measured during the 1941-1987 period. This was done to determine the formation year of each tree ring in order to study the pathway of tritium uptake into the tree rings. In the 1941 to 1953 period, the A14C value remained slightly lower than 0%o. It began to increase from 1954 to a small broad peak of 250%o between 1959 and 1961, followed by rapid increase to the highest value of approximately 800%o in 1964. Since 1964, it had been diminishing year by year to reach a level of 190%o in 1987. The two peak years coincided with those in the known carbon-14 patterns in tree rings. However, there existed a difference in the amplitude of the A14C values during the period of 1963 1967.

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Carbon-14 dating of tree rings for tritium measurement

Yamada

Yasuike

Itoh³

et al. 1998

J Radioanal Nucl Chem

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Temporal variation of tritium concentration in tree-ring cellulose over the past 50 years

Yamada

Yasuike

Komura

2004

Journal of Radioanalytical and Nuclear Chemistry

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Temporal variation of tritium concentration in tree-ring cellulose over the past 50 years

Yamada

Yasuike

Komura

2005

J Radioanal Nucl Chem

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Effect of labile hydrogens on measurement of tritium preserved in hydrogens of cellulose

Cited by 6 publications

References 7 publications

Carbon-14 dating of tree rings for tritium measurement

Carbon-14 dating of tree rings for tritium measurement

Temporal variation of tritium concentration in tree-ring cellulose over the past 50 years

Temporal variation of tritium concentration in tree-ring cellulose over the past 50 years

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