| アイテムタイプ |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2024-05-02 |
| タイトル |
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タイトル |
222Rn and 226Ra Concentrations in Spring Water and Their Dose Assessment Due to Ingestion Intake |
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言語 |
en |
| 言語 |
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言語 |
eng |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 著者 |
Ryohei Yamada
Masahiro Hosoda
Tomomi Tabe
Yuki Tamakuma
Takahito Suzuki
Kevin Kelleher
Takakiyo Tsujiguchi
Yoshiki Tateyama
Eka Djatnika Nugraha
Anna Okano
Yuki Narumi
Chutima Kranrod
Hirofumi Tazoe
Kazuki Iwaoka
et al
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| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
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. |
| 書誌情報 |
International Journal of Environmental Research and Public Health
巻 19,
号 3,
p. 1758,
発行日 2022-02
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| 出版者 |
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出版者 |
MDPI |
| ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
1660-4601 |
| DOI |
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識別子タイプ |
DOI |
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関連識別子 |
10.3390/ijerph19031758 |
