2024-03-29T11:32:52Z
https://u-ryukyu.repo.nii.ac.jp/oai
oai:u-ryukyu.repo.nii.ac.jp:02011291
2023-08-03T05:29:12Z
1642838163960:1642838338003
1642838403551:1642838406414
沖縄島における陸水中トリチウム濃度
Tritium Concentration of Inland Water in Okinawa Island, Southwestern Part of Japan
仲宗根, 峻也
石津, 裕二
池本, 憲弘
城間, 吉貴
赤田, 尚史
田中, 将裕
古川, 雅英
Nakasone, Shunya
Ishizu, Yuji
Ikemoto, Norihiro
Shiroma, Yoshitaka
Akata, Naofumi
Tanaka, Masahiro
Furukawa, Masahide
open access
© 2018 日本保健物理学会
tritium
inland water
Okinawa
limestone
latitude effect.
In this study, to estimate the recent tritium concentration and its variation with latitude and time in Japan, environmental water samples were taken monthly from June 2014 to October 2016 in Okinawa Island, subtropical region of Japan. The inland water samples were taken from two springs and the drop water samples were taken in a limestone cave. The samples were distilled to remove impurities and then electrolysed using electrolytic enrichment system. Each of the enrichment samples was mixed with the liquid scintillation cocktail, and the tritium concentration was measured with a low background liquid scintillation counter. Arithmetic mean ± standard deviation for the tritium concentration of Morinokawa (spring water), Kakinohanahikawa (spring water) and Gyokusendo (cave drop water) samples were estimated to be 0.13 ± 0.04 Bq L^<-1>, 0.12 ± 0.03 Bq L^<-1> and 0.13 ± 0.03 Bq L^<-1>, respectively. The comparison between these results and reported data suggested that the latitude effect is one of factors in the relatively low tritium concentration observed in Okinawa Island.
論文
日本保健物理学会
2018
jpn
journal article
VoR
http://hdl.handle.net/20.500.12000/47470
http://hdl.handle.net/20.500.12000/47470
https://u-ryukyu.repo.nii.ac.jp/records/2011291
https://doi.org/10.5453/jhps.53.65
https://doi.org/10.5453/jhps.53.65
1884-7560
0367-6110
保健物理
53
2
65
71
https://u-ryukyu.repo.nii.ac.jp/record/2011291/files/53_65.pdf