锶-89在模拟水稻田中的动力学行为
DOI:
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

基金项目:


THE KINETIC BEHAVIOUR OF STRONTIUM-89 IN THE SIMULATION PADDY
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 文章评论
    摘要:

    采用模拟污染物的同位素示踪技术探索了~(89)Sr在水稻-田水-土壤系统中的消长与分配,并建立了其行为规律的数学模型。结果表明,田表水中~(89)Sr-Sr含量迅速地降低,1d后由原始量的8.5μg/g降为4.0μg/g,以后逐渐降低,至试验结束(28d)时为0.7μg/g;表土中~(89)Sr-Sr含量迅速地增大,1d后即由0达12.4μg/g,试验结束时为20.9μg/g;水稻地上部,1d后由0达8.8μg/g,以后也呈增加趋势,结束时达21.7μg/g,水稻根由1d的9.5μg/g达试验结束时的39.6μg/g,田表水、表土用水稻植株中~(89)Sr-Sr含量随时间变化的规律相应为. 其次,在收获期,糙米中~(89)Sr-Sr含量为1.6μg/g,稻壳为9.4μg/g,稻草为39.7μg/g,稻根为41.8μg/g。还测定了~(89)Sr-Sr在收获期土壤中的铅垂分布,表明,58.2%的~(89)Sr-Sr滞留于表层2cm,并且其滞留量随土壤深度按指数规律衰减:

    Abstract:

    The isotope tracer techniques for simulated pollutants are applied to explore the accumulation-disappearance and distribution of strontium-89 in the rice-paddy water-soil system,and the mathematical model of the behaviour law was built. The results showed that the content of 89Sr-Sr in paddy water was reduced quickly, after the first day reduced from initial 8.5μg/g to 4.0 μg/g and afterwords reduced gradually. When the test ended (28 days), it was 0.7(μg/g. The content of 89Sr-Sr was increased quickly in t...

    参考文献
    相似文献
    引证文献
引用本文

王寿祥,张永熙,胡秉民,黄丹.锶-89在模拟水稻田中的动力学行为.生态学报,1992,12(4):310~315

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数: