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134Cs在水-吸附剂体系中的行为

Behavior of  ̄(134)C_s in Water-Adsorhent System.

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【作者】 徐寅良陈传群孙志明

【Author】 Xu Yinliang et al.(Institute ofNuclear-Agricultural Science, Zhejiang Agricultural University,Hangzhou310029)

【机构】 浙江农业大学原子核农业科学研究所

【摘要】 矿物对134的吸附率与粒径之间的关系可用幂回归方程来表示;矿物能很快地吸附水体中的134并达到吸附平衡;134C_s水—吸附剂体系中的消失和吸附过程均遵循指数回归形式;沸石对134的吸附能力最强,活化膨润土和珍珠岩较强,膨润土较弱;土壤也是一类良好的134吸附剂;134在土壤中的移动距离很小,有95%左右集中在0—1cm的表土层中,淋溶水中只占1%以下;土壤对134的吸附率与土层深度之间呈指数函数关系。

【Abstract】 There was a power regression between the adsorption rate of  ̄(134)C_sby lnineral and the particle diameter. ̄(134)C_s was strongly adsorded by mineral inwater phase and reached equilibrium. The variation of  ̄(134)C_s in water min-eral system followed the form of exponential function. The adsorption abilityof  ̄(134)C_s by mineral varied with specise:Zeolite>activated Bentonite>Pea-rlite>Bentonite,Soil was a effective kind of adsorbent of  ̄(134)C_s.The migr-ation distance of  ̄(134)C_s in soil was very small.95% radioactivity of  ̄(134)C_s wasconcentrated in the surface soil and there was less than 1%in the leachate.The relation between the adsorption rate of  ̄(134)C_s by soil and the deepnessof soil was represented with exponential regression.

【关键词】 铯-134吸附剂行为
【Key words】 cesium-134adsorbentbehavior
  • 【文献出处】 农业环境保护 ,AGRO-ENVIRONMENTAL PROTECTION , 编辑部邮箱 ,1994年01期
  • 【分类号】X131
  • 【被引频次】1
  • 【下载频次】28
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