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Uptake, retention and organ/tissue distribution of 137Cs by Japanese catfish (Silurus asotus Linnaeus)
https://repo.qst.go.jp/records/43553
https://repo.qst.go.jp/records/4355333c21611-ef0b-47cf-9c99-56d42b8b8c08
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2004-12-07 | |||||
| タイトル | ||||||
| タイトル | Uptake, retention and organ/tissue distribution of 137Cs by Japanese catfish (Silurus asotus Linnaeus) | |||||
| 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 |
M., Abdul Malek
× M., Abdul Malek× Nakahara, Motokazu× Nakamura, Ryouichi× 中原 元和× 中村 良一 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The work describes the uptake, retention/biological elimination and organ/tissue distribution of 137-Cs by freshwater Japanese catfish (Silurus asotus Linnaeus) under laboratory conditions. The fish were divided into three groups based on their size and age and reared in 137-Cs-spiked water. The concentration of 137-Cs in the whole body of the live fish was measured at regular intervals up to 60 days. A significant accumulation of 137-Cs was found, but a steady state condition was not achieved by the end of the experiment. The bioaccumulation factors at steady state and the required time to reach steady state were estimated to be 1.55 and 255 days, 1.76 and 180 days and 1.99 and 160 days for large, medium and small size fish, respectively. To determine the effective half-life of 137-Cs, the fish were transferred and reared in the non-contaminated host water. The concentration of the remaining 137-Cs in the whole body of the live fish was measured up to 66 days. The average effective half- life of 137-Cs in the fish species was found to be ~142 days for fish of all sizes. The distribution of 137-Cs in different organs/tissues of the fish was determined. Accumulation of 137-Cs in muscle/flesh of the fish was found to be ~75% of whole body accumulation. The uptake rate and the retention capability of juvenile fish were found to be higher and therefore, these were more susceptible to 137-Cs than adult and old fish, and could be an important source of 137-Cs in the human food chain. |
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| 書誌情報 |
Journal of Environmental Radioactivity 巻 77, p. 191-204, 発行日 2004 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0265-931X | |||||
