生态与农村环境学报 ›› 2001, Vol. 17 ›› Issue (1): 40-43.doi:

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3种水生蔬菜对稀土元素钷的吸收与富集

陈祖义, 章力干   

  1. 南京农业大学理学院
  • 收稿日期:2000-06-19 出版日期:2001-02-10 发布日期:2011-11-23
  • 作者简介:陈祖义(1931-),男,教授。主要研究方向为农用化学品生态环境及其安全性评价,先后应用核素示踪技术完成10余项科研任务,已发表论文40余篇,获省部级以上科研成果奖10项次。
  • 基金资助:

    国家自然科学基金资助项目 (39670417)

Absorption and Enrichment of 147 Pm in Aquatic Vegetables

CHEN  Zu-Yi, ZHANG  Li-Gan   

  1. College of Science,Nanjing Agriculture University
  • Received:2000-06-19 Online:2001-02-10 Published:2011-11-23

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147Pm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147Pm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147Pm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。 

关键词: 稀土元素, 钷(147Pm), 富集, 吸收系数, 水生蔬菜

Abstract: Studies were carried out with radionuclide tracer on absorption,distribution and absorption coefficient of rare earth Promethium( 147 Pm) 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.

Key words: absorption, aquatic vegetable, coefficient, enrichment, Promethium( 147 Pm), rare earth(RE)

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