| 239Pu在板岩和土壤中的吸附 |
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| 引用本文： | 李丽,庹先国,李哲,冷阳春. 239Pu在板岩和土壤中的吸附[J]. 核化学与放射化学, 2012, 34(1): 60-64 |
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| 作者姓名： | 李丽 庹先国 李哲 冷阳春 |
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| 作者单位： | 成都理工大学核技术与自动化学院;成都理工大学地质灾害防治与地质环境保护国家重点实验室 |
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| 基金项目： | 国家自然科学基金资助项目(40974065);国家自然科学基金——国家杰出青年科学基金资助项目(41025015) |
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| 摘 要： | 通过研究239Pu在地质环境中的迁移行为,为废物处置工作提供基础性数据和技术依据。以研究区的地质介质千枚状板岩和土壤为样品,利用静态实验方法,研究了核素239Pu在这2种介质中的吸附行为特征。实验结果表明,随着液固比的减小,溶液中钚的浓度均降低,说明随着颗粒样品的增多,钚的吸附量增加,而吸附分配系数均降低。吸附分配系数随着CO2-3浓度的增大而呈下降趋势,溶液中CO2-3的存在不利于钚的吸附。钚在板岩和土壤中的吸附行为可用Freundlich吸附等温式来描述。
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| 关 键 词： | 239Pu 千枚状板岩 土壤 Kd |
Sorption of 239Pu on Phyllitic Slate and Soil Medium |
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| LI Li,TUO Xian-guo,LI Zhe,LENG Yang-chun. Sorption of 239Pu on Phyllitic Slate and Soil Medium[J]. Journal of Nuclear and Radiochemistry, 2012, 34(1): 60-64 |
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| Authors: | LI Li TUO Xian-guo LI Zhe LENG Yang-chun |
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| Affiliation: | 1.The College of Applied Nuclear Technology and Automation Engineering,Chengdu University of Technology,Chengdu 610059,China;2.State Key Laboratory of Geohazard Prevention and Geoenvironment Protection,Chengdu University of Technology,Chengdu 610059,China |
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| Abstract: | This paper studies the sorption behavior of 239Pu in phyllitic slate and soil.The samples of phyllitic slate and soil in research area were taken for investigation of the sorption characteristics of 239Pu by static experiment.The liquid-to-solid ratio influence experiment shows a positive correlation between the Kd of 239Pu and liquid-to-solid ratio.Different cations and anions influence experiment shows that when the concentration of the carbonate ions increases,the distribution coefficient declines.Freundlich isothermal adsorption equation can describe the adsorption behavior of 239Pu in the phyllitic slate and soil. |
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| Keywords: | 239Pu phyllitic slate soil Kd |
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