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Mass interception fractions and weathering half-lives of iodine-131 and radiocesium in leafy vegetables observed after the Fukushima Daiichi Nuclear Power Plant accident
https://repo.qst.go.jp/records/84930
https://repo.qst.go.jp/records/84930843cf7e6-894f-4134-85c9-df3dafd637c2
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2021-07-19 | |||||
| タイトル | ||||||
| タイトル | Mass interception fractions and weathering half-lives of iodine-131 and radiocesium in leafy vegetables observed after the Fukushima Daiichi Nuclear Power Plant accident | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Tagami, Keiko
× Tagami, Keiko× Uchida, Shigeo× Keiko, Tagami× Shigeo, Uchida |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Background: This study was carried out to provide environmental transfer parameter values to estimate activity concentrations of these radionuclides in agricultural crops when direct contamination occurred. Materials and Methods: Mass interception fractions (FBs) and weathering half-lives (Tws) of 131I and radiocaesium were calculated using openly available monitoring data obtained after the Fukushima Daiichi Nuclear Power Plant accident. FB is the ratio between the initial radioactivity concentration of a radionuclide retained by the edible part of the plant (Bq kg–1 fresh weight [FW]) and the amounts of deposited radionuclide in that area (Bq m–2). Tw values can be calculated using activity concentrations of crops decreased with time after the initial contamination. Results and discussion: Calculated FB and Tw values for 131I and radiocaesium were mostly obtained for leafy vegetables. The analytical results showed that there was no difference of FBs between 131I and radiocaesium by t-test; geometric mean values for leafy vegetables cultivated under outdoor conditions were 0.058 and 0.12 m2 kg–1 FW, respectively. Geometric mean Tw value of 131I in leafy vegetables grown under outdoor conditions was 8.6 d, and that of radiocaesium was 6.6 d; there was no significant difference between Tw values of these radionuclides by Wilcoxon rank sum test. Conclusion: There was no difference between 131I and radiocaesium for FBs and Tws. By using these factors, we would be able to carry out a rough estimation of the activity concentrations of 131I and radiocaesium in the edible part of leafy crops when a nuclear accident occurred. |
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| 書誌情報 |
Journal of Radiation Protection and Research 巻 46, 号 4, p. 178-183, 発行日 2021-12 |
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| 出版者 | ||||||
| 出版者 | Korean Association for Radiation Protection | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 2508-1888 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.14407/jrpr.2021.00164 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://www.jrpr.org/journal/view.php?doi=10.14407/jrpr.2021.00164 | |||||
