| 3种水生蔬菜对稀土元素钷的吸收与富集 |
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| 引用本文： | 陈祖义,章力干.3种水生蔬菜对稀土元素钷的吸收与富集[J].生态与农村环境学报,2001,17(1):40-43. |
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| 作者姓名： | 陈祖义 章力干 |
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| 作者单位： | 南京农业大学理学院, |
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| 基金项目： | 国家自然科学基金资助项目 !(396 70 417) |
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| 摘 要： | 应用放射性核素示踪技术 ,研究了 3种水生蔬菜 (慈姑、荸荠和水芹菜 )对稀土元素钷 (14 7Pm)的吸收与富集。结果表明 :(1 ) 3种水生蔬菜对14 7Pm均有较强的吸收与富集能力。其中 ,水芹菜随生长时间的延长 ,吸收14 7Pm的量明显增加 ,50、80、1 1 0d时全样的吸收系数分别为 0 98± 0 1 9、0 92± 0 3 8和 1 1 4± 0 1 8;(2 ) 3种蔬菜的食用器官 (水芹菜的主茎 ,慈姑和荸荠的球茎 )对14 7Pm具有明显的富集性 ,吸收系数分别为 1 2 9± 0 2 8、2 0 9± 0 0 3和 1 55± 0 55
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| 关 键 词： | 稀土元素 钷(147Pm) 富集 吸收系数 水生蔬菜 |
| 文章编号： | 1001-5906(2001)01-0040-04 |
| 修稿时间： | 2000年6月19日 |
Absorption and Enrichment of~(147) Pm in Aquatic Vegetables. |
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| Chen Zuyi et al.Absorption and Enrichment of~(147) Pm in Aquatic Vegetables.[J].Journal of Ecology and Rural Environment,2001,17(1):40-43. |
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| Authors: | Chen Zuyi |
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| Abstract: | Studies were carried out with radionuclide tracer onabsorption,distribution and absorption coefficient of rare earth Promethium(147Pm) in three species of aquatic vegetables(arrowhead,water chestnut and water dropwort).The results showed that they displayed a high capacity of absorbing and enriching 147 Pm. In the case of water dropwort,the absorption of 147 Pm increased with the growing time. In 50,80 and 110 days,the absorption coefficient of the entire sample was 0.98±0.19，0.92±0.38 and 1.14±0.18，respectively. The edible parts of the vegetables(stems of water dropwort and corms of arrowhead and water chestnut)showed enrichment of 147 Pm with the absorption coefficient,being 1.29±0.28，2.09±0.03 and 1.55±0.55，respectively. |
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| Keywords: | absorption aquatic vegetable coefficient enrichment Promethium( 147 Pm) rare earth(RE) |
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