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222Rn and 226Ra Concentrations in Spring Water and Their Dose Assessment Due to Ingestion Intake.
Yamada, Ryohei; Hosoda, Masahiro; Tabe, Tomomi; Tamakuma, Yuki; Suzuki, Takahito; Kelleher, Kevin; Tsujiguchi, Takakiyo; Tateyama, Yoshiki; Nugraha, Eka Djatnika; Okano, Anna; Narumi, Yuki; Kranrod, Chutima; Tazoe, Hirofumi; Iwaoka, Kazuki; Yasuoka, Yumi; Akata, Naofumi; Sanada, Tetsuya; Tokonami, Shinji.
Afiliação
  • Yamada R; Graduate School of Health Sciences, Hirosaki University, 66-1 Honcho, Hirosaki, Aomori 036-8564, Japan.
  • Hosoda M; Graduate School of Health Sciences, Hirosaki University, 66-1 Honcho, Hirosaki, Aomori 036-8564, Japan.
  • Tabe T; Institute of Radiation Emergency Medicine, Hirosaki University, Hirosaki, Aomori 036-8564, Japan.
  • Tamakuma Y; School of Health Sciences, Hirosaki University, Hirosaki, Aomori 036-8564, Japan.
  • Suzuki T; Graduate School of Health Sciences, Hirosaki University, 66-1 Honcho, Hirosaki, Aomori 036-8564, Japan.
  • Kelleher K; Graduate School of Health Sciences, Hirosaki University, 66-1 Honcho, Hirosaki, Aomori 036-8564, Japan.
  • Tsujiguchi T; Institute of Radiation Emergency Medicine, Hirosaki University, Hirosaki, Aomori 036-8564, Japan.
  • Tateyama Y; Office of Radiation Protection and Environmental Monitoring, Environmental Protection Agency, Clonskeagh Square, D14 H424 Dublin, Ireland.
  • Nugraha ED; Graduate School of Health Sciences, Hirosaki University, 66-1 Honcho, Hirosaki, Aomori 036-8564, Japan.
  • Okano A; School of Health Sciences, Hirosaki University, Hirosaki, Aomori 036-8564, Japan.
  • Narumi Y; Graduate School of Health Sciences, Hirosaki University, 66-1 Honcho, Hirosaki, Aomori 036-8564, Japan.
  • Kranrod C; School of Health Sciences, Hirosaki University, Hirosaki, Aomori 036-8564, Japan.
  • Tazoe H; School of Health Sciences, Hirosaki University, Hirosaki, Aomori 036-8564, Japan.
  • Iwaoka K; Institute of Radiation Emergency Medicine, Hirosaki University, Hirosaki, Aomori 036-8564, Japan.
  • Yasuoka Y; Institute of Radiation Emergency Medicine, Hirosaki University, Hirosaki, Aomori 036-8564, Japan.
  • Akata N; National Institute of Radiological Sciences, National Institutes for Quantum Science and Technology, 4-9-1 Anagawa, Inage, Chiba 263-0024, Japan.
  • Sanada T; Radioisotope Research Center, Kobe Pharmaceutical University, Kobe, Hyogo 658-8558, Japan.
  • Tokonami S; Institute of Radiation Emergency Medicine, Hirosaki University, Hirosaki, Aomori 036-8564, Japan.
Article em En | MEDLINE | ID: mdl-35162781
222Rn and 226Ra concentrations of less than a few to several thousands of Bq L-1 have been observed in several underground bodies of water around the world. Although regulations for these concentrations in water have been implemented internationally, there are currently no regulations in place in Japan. However, concentrations that exceed these internationally recognized regulatory values have also been observed in Japan. In this study, concentrations in spring water in the northern part of Japan were measured and the effective dose from intake of the water was evaluated. 222Rn concentrations were measured using a liquid scintillation counter, and 226Ra concentrations were measured using a high purity germanium detector after chemical preparation. The measured 222Rn concentrations (=12.7 ± 6.1 Bq L-1) and 226Ra concentrations (<0.019-0.022 Bq L-1) did not exceed the reference values set by international and European/American organizations. A conservative estimate of the annual effective ingestion dose of 8 µSv for 222Rn and 226Ra obtained in this study is much smaller than the estimated overall annual effective dose of 2.2 mSv from natural radiation to the Japanese population. However, this dosage accounts for 8% of the WHO individual dosing criteria of 0.1 mSv/year for drinking water.
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Texto completo: 1 Bases de dados: MEDLINE Assunto principal: Poluentes Radioativos da Água / Água Potável / Monitoramento de Radiação / Radônio Idioma: En Revista: Int J Environ Res Public Health Ano de publicação: 2022 Tipo de documento: Article País de afiliação: Japão

Texto completo: 1 Bases de dados: MEDLINE Assunto principal: Poluentes Radioativos da Água / Água Potável / Monitoramento de Radiação / Radônio Idioma: En Revista: Int J Environ Res Public Health Ano de publicação: 2022 Tipo de documento: Article País de afiliação: Japão