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首页> 外文期刊>Applied radiation and isotopes: including data, instrumentation and methods for use in agriculture, industry and medicine >Adsorption characteristics of 47 elements on a calcareous soil, a red earth and an alumina: a multitracer study.
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Adsorption characteristics of 47 elements on a calcareous soil, a red earth and an alumina: a multitracer study.

机译：钙质土壤，红壤和氧化铝上47种元素的吸附特性：多示踪研究。

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摘要

The distribution coefficients, Kd of 47 elements from Na to Bi on a calcareous soil, a red earth and an alumina were, respectively, determined using a multitracer technique. The multitracer solution was prepared by irradiation of UO2(NO3)2 with 40Ar ion beam. It was found that there is a common general trend of variation in Kd for both soils and the alumina, i.e. all the shapes of plots of log Kd versus electron binding energy (Iz) are an 'inverted V', hence the important role of chemical interaction in the adsorption of trace inorganic cations, anions and neutral complexes on the soils and the oxides was demonstrated. For the alkali and alkaline earth elements, the common sequences of Kd values on the three adsorbents were Na+ < K+ < Rb+ < Cs+ (except for Rb+ on the alumina) and Mg2+ < Sr2+ < Ba2+ and accord with the sequences of effective ionic radii or single ion hydration enthalpies.
机译：利用多示踪技术分别确定了钙质土壤，红壤和氧化铝中Na到Bi的47种元素的分布系数Kd。通过用40Ar离子束辐照UO2（NO3）2制备多示踪剂溶液。已经发现，土壤和氧化铝都有一个共同的Kd变化趋势，即log Kd与电子结合能（Iz）的所有曲线图的形状都是“倒V”，因此化学的重要作用证明了在土壤和氧化物上微量无机阳离子，阴离子和中性络合物的吸附相互作用。对于碱金属和碱土金属元素，三种吸附剂上的Kd值的通用顺序为Na +

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