Authors:
Y. Yamada Hokuriku University School of Pharmacy 920-11 Kanagawa-machi, Kanazawa (Japan)

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M. Itoh Kanazawa University Low level Radioactivity Laboratory 923-12 Tatsunokuchi-machi, Ishikawa (Japan)

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N. Kiriyama Hokuriku University School of Pharmacy 920-11 Kanagawa-machi, Kanazawa (Japan)

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K. Komura Kanazawa University Low level Radioactivity Laboratory 923-12 Tatsunokuchi-machi, Ishikawa (Japan)

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K. Ueno Kanazawa University Low level Radioactivity Laboratory 923-12 Tatsunokuchi-machi, Ishikawa (Japan)

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Abstract  

All of the combustion water samples extracted from cellulose in pine tree rings corresponding to the 1983–1987 period showed elevated tritium concentrations of approximately 65 pCi/dm3, which were 30 to 35 pCi/dm3 higher than those for precipitation and atmospheric vapor in recent years. In addition, other environmental samples, viz. the tissue-free water in tree rings, and of combustion and tissue-free water in pine needles and spring water near the pine tree site also showed concentrations similar to the combustion water of cellulose. These findings suggest that most of the tritium in tree rings was supplied from underground water containing a high tritium concentration in the root zone of the pine tree.

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Journal of Radionalytical and Nuclear Chemistry
Language English
Size A4
Year of
Foundation
1968
Volumes
per Year
1
Issues
per Year
12
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 0236-5731 (Print)
ISSN 1588-2780 (Online)