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Selectivity for Sr, Cs and other alkaline and alkaline earth metals by plant roots under different growth stages
https://repo.qst.go.jp/records/68375
https://repo.qst.go.jp/records/683756c96e08d-8475-4dea-bf78-ef29d52eb8bd
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2006-06-05 | |||||
| タイトル | ||||||
| タイトル | Selectivity for Sr, Cs and other alkaline and alkaline earth metals by plant roots under different growth stages | |||||
| 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 |
Nakamaru, Yasuo
× Nakamaru, Yasuo× Tagami, Keiko× Uchida, Shigeo× 中丸 康夫× 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 | A greenhouse experiment using stable elements was carried out to understand the soil-plant transfer of Sr-90 and Cs-137 at different growth stages of soybean. The concentrations of alkaline metals (Na, K, Rb, Cs) and alkaline earth metals (Mg, Ca, Sr, Ba) in plants and in soil solutions sampled at different growth periods were measured by ICP-MS and ICP-AES. The selectivity coefficient (SC), which is the ratio of actual element uptake by roots and mass flow of the element from soil solution, was calculated from measured values. The SC values of alkaline and alkaline earth metals were obtained for the vegetative growth stage (0-32 d) and podding stage (32-61d) of soybean. The concentrations of each alkaline and alkaline earth metal in the soil solution decreased with the soybean growth. The SC values of alkaline earth metals increased with the soybean growth; for example, the value for Sr at the vegetative growth stage was 1.26, and it increased to 2.06 at the podding stage. The results indicated that the soybean growth enhanced the uptake rate of Sr and the other alkaline earth metals. On the other hand, the SC values of alkaline metals decreased; e.g. the value of 0.73 for Cs in the vegetative growth stage dropped to 0.24 in the podding stage. This suggested that the decrease of K in the soil solution due to its uptake by the soybean plants increased the amount of Cs sorbed onto soil; consequently, the soil-plant transfer of Cs was inhibited by the soybean growth. | |||||
| 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 | 11th International Congress of the International Radiation Protection | |||||
| 発表年月日 | ||||||
| 日付 | 2004-05-28 | |||||
| 日付タイプ | Issued | |||||
