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Seasonal change of radiocesium and potassium concentrations in Someiyoshino cherry and Japanese chestnut trees observed after Fukushima nuclear accident
https://repo.qst.go.jp/records/71893
https://repo.qst.go.jp/records/7189345712f9b-31cf-4f1e-83b0-b1bf57ccc484
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2015-12-21 | |||||
| タイトル | ||||||
| タイトル | Seasonal change of radiocesium and potassium concentrations in Someiyoshino cherry and Japanese chestnut trees observed after Fukushima nuclear 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_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 |
Tagami, Keiko
× Tagami, Keiko× Uchida, Shigeo× 田上 恵子× 内田 滋夫 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Radiocesium and potassium-40 concentrations in two types of trees have been measured following the accident at Fukushima Daiichi Nuclear Power Plants (FDNPP) by collecting leaf samples several times a year from 2011 to 2014. We previously found that for herbaceous plants, K measurement could not be used as analogue of Cs although Cs is known to have a similar chemical reactivity to that o f K, because their distributions in plant tissues were different. However, it was not clear whether other higher plant species, such as trees, would similarly show different Cs and K fates or not. The sampling was carried out in Chiba, 220 km south of FDNPP. Two deciduous tree species, Someiyoshino cherry (Cerasus × yedoensis (Matsum.) A.V.Vassil. ‘Somei-yoshino’) and Japanese chestnut (Castanea crenata) were used in this study. Plant samples were washed with tap water to remove dust from the surface and then they were oven-dried to a constant weight at 80˚C in an electric oven for at least 2 d. Each sample was pulverized and mixed well, and transferred to a 100-mL plastic container. Radioactivity concentration in each sample was measured by a Ge detector system (Seiko EG&G). The Cs-137 concentration decreased with time for both tree leaves, while K concentration was almost constant. For the Japanese chestnut tree, both Cs-137 and K increase was observed every spring and then the concentration decreased when season changed. The results implied that Cs and K behaviors were different in different tree species. This work has been partially supported by the Agency for Natural Resources and Energy, the Ministry of Economy, Trade and Industry (METI), Japan. |
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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 | PACIFICHEM 2015 | |||||
| 発表年月日 | ||||||
| 日付 | 2015-12-18 | |||||
| 日付タイプ | Issued | |||||
