Plasma and Fusion Research

Volume 18, 2405030 (2023)

Regular Articles

Tritium Concentration in Natural Spring Water Collected at Hirosaki, Japan
Naofumi AKATA, Kazusa OKADA1), Haruka KUWATA2), Khmruthai KHEAMSIRI2), Masahiro HOSODA2), Hirofumi TAZOE, Ryo YASUHARA3,4), Shinji SUGIHARA5), Ryohei YAMADA and Masahiro TANAKA3)
Institute of Radiation Emergency Medicine, Hirosaki University, 66-1 Hon-cho, Hirosaki, Aomori 036-8564, Japan
1)
School of Health Sciences, Hirosaki University, 66-1 Hon-cho, Hirosaki, Aomori 036-8564, Japan
2)
Graduate School of Health Science, Hirosaki University, 66-1 Hon-cho, Hirosaki, Aomori 036-8564, Japan
3)
National Institute for Fusion Science, 322-6 Oroshi-cho, Toki, Gifu 509-5292, Japan
4)
The Graduate University for Advanced Studies, SOKENDAI, 322-6 Oroshi-cho, Toki, Gifu 509-5292, Japan
5)
Central Institute of Radioisotope Science and Safety, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, Fukuoka 819-0395, Japan
(Received 23 December 2022 / Accepted 20 March 2023 / Published 27 April 2023)

Abstract

In order to understand the regional property of tritium concentration in natural water at Hirosaki City, Aomori Prefecture Japan, natural spring water samples were collected from 15 sites in 2016 and tritium concentration was measured by low-level tritium counting procedure using a commercially available solid polymer electrolyte (SPE) tritium enrichment system. The limit of detection of this procedure was approximately 0.06 Bq/L. Findings showed tritium concentrations in natural spring water samples ranged from 0.30 to 0.55 Bq/L with mean value of 0.44±0.08 Bq/L. These results were within the range of reported concentrations in rain and surface and shallow groundwater in Japan including other places of Aomori Prefecture. The presently obtained data could be considered as the background level of the Hirosaki area. The annual effective dose would be negligibly small compared with the annual effective dose limit of 1 mSv, if the committed effective dose equivalent from drinking water to residents was calculated using the highest tritium concentration data.

Keywords

tritium, natural water, low-level measurement, electrical enrichment system

DOI: 10.1585/pfr.18.2405030

Full Text

PDF format (694Kbytes) PDF Download

References

  • [1] N. Momoshima, Rad. Protec. Dosim. 198, 13 (2022).
  • [2] S. Okada and N. Momoshima, Health Phys. 65, 595 (1993).
  • [3] I.R. Cristescu et al., Nucl. Fusion 47, S458 (2007).
  • [4] Y. Takeiri, Atoms 6, 69 (2018).
  • [5] N. Akata et al., Plasma Fusion Res. 11, 1305032 (2016).
  • [6] S. Yokoyama et al., Plasma Fusion Res. 14, 3405099 (2019).
  • [7] N. Akata et al., Rad. Protec. Dosim. 184, 338 (2019).
  • [8] M. Tanaka et al., Rad. Protec. Dosim. 198, 1084 (2022).
  • [9] N. Momoshima et al., J Radioanal. Nucl. Chem. 150, 163 (1991).
  • [10] S. Sugihara, J. Plasma Fusion Res. 85, 429 (2009) in Japanese.
  • [11] R. Yamada et al., Int. J. Environ. Res. Public Health 19, 1758 (2022).
  • [12] N. Nemoto and Y. Ujiie, Tohoku Geotechnical Consultants Association, 52 (2009) in Japanese.
  • [13] N. Momoshima et al., Fusion Sci Technol. 48, 520 (2005).
  • [14] N. Akata et al., Fusion Eng. Des. 168, 112434 (2021).
  • [15] N. Akata et al., Rad. Environ. Med. 9, 93 (2020).
  • [16] K. Tonosaki et al., J. Radioanal. Nucl. Chem. 243, 579 (2000).
  • [17] S. Ueda et al., J. Radioanal. Nucl. Chem. 267, 29 (2006).
  • [18] S. Kitabatake et al., Fusion Sci. Technol. 60, 1280 (2011).
  • [19] H. Kuwata et al., Atmosphere 13, 848 (2022).
  • [20] H. Hasegawa et al., Rad. Protec. Dosim. 167, 201 (2015).
  • [21] N. Akata et al., Fusion Eng. Des. 168, 112434 (2021).
  • [22] N. Akata et al., Rad. Protec. Dosim. 198, 976 (2022).
  • [23] Japan Chemical Analysis Center, https://www.kankyo-hoshano.go.jp/data/database/