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Measurement of soil-to-crop transfer factor of tellurium for future estimation of potential radiotellurium ingestion from crops
https://repo.qst.go.jp/records/71387
https://repo.qst.go.jp/records/7138726914852-fba3-4a86-94f7-b6a77d7a0bf6
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2013-12-09 | |||||
| タイトル | ||||||
| タイトル | Measurement of soil-to-crop transfer factor of tellurium for future estimation of potential radiotellurium ingestion from crops | |||||
| 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_c94f | |||||
| 資源タイプ | conference object | |||||
| 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 |
楊, 国勝
× 楊, 国勝× 田上, 恵子× 鄭, 建× 内田, 滋夫× 楊 国勝× 田上 恵子× 鄭 建× 内田 滋夫 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The Fukushima Daiichi Nuclear Power Plant (FDNPP) accident discharged large amounts of radionuclides into the environment, including 127mTe (T1/2=109 d), 129mTe (T1/2=33.6 d), 131mTe (T1/2=30 h) and 132Te (T1/2=3.204 d) . Since relatively long-lived 127mTe could transfer from soil to crops through roots, people would ingest 127mTe; however, the isotope is a beta-emitter and the concentration data in food crops were unavailable. Now, 127mTe has been decayed out and it is difficult to measure 127mTe in crops samples. However, it is still important to estimate how much amount of 127mTe might have been ingested from food for public safety purpose. The soil-to-crop transfer factor (TF) is a useful tool to estimate Te concentrations in crops. Unfortunately, the TF data of Te are scarce in the world and there are no data for crops native to Japan. In order to obtain the TF data of Te for crops, we focused on stable Te as an analogue of radioactive Te. We measured 79 soil and associated crop samples collected nationwide to calculate TFs of Te. Te concentrations in soil and crop samples were measured by using sector field inductively coupled plasma mass spectrometry (SF-ICP-MS) after aqua regia digestion and appropriate dilution to reduce the matrix effect . The Te contents in Japanese soil and crops ranged from 12.6 to 479 ng g-1 (mean: 55.3 ng g-1) and from 0.06 to 3.8 ng g-1 (mean: 0.7 ng g-1), respectively. The Te concentrations in soil were higher than previous report in Japan (10–109 ng g-1), while Te contents in plant samples were much lower than those (18–33 ng g-1) in Japanese plants . Then, TF values from 8.7 × 10-4 to 1.1 × 10-1 (mean: 1.8 × 10-2) were obtained for the first time in Japan (Figure 1), which were relatively low compared to those reported by IAEA-TRS-472 (0.1–1) [2]. These data could be used to estimate the internal radiation dose from 127mTe after the FDNPP accident. |
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| 会議概要（会議名, 開催地, 会期, 主催者等） | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | The 5th Asia-Pacific Symposium on Radiochemistry ’13 | |||||
| 発表年月日 | ||||||
| 日付 | 2013-09-24 | |||||
| 日付タイプ | Issued | |||||
