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However, the applicability of batch tests has been discussed and criticized as the advancement of technology has relaxed the aforementioned limitations.It was recognized that the distribution coefficients (Kd) of batch techniques are too simple to represent the reaction system of interest in many cases. However, it was found that the diffusion techniques that are frequently used, gives more accurate information about the radionuclides in deep geology.5,6 Some literatures7–9 have discussed the advantages and disadvantages of Kd and Rf obtained by the two methods. Generally, all experimental results showed that the Kd values derived from the diffusion tests are more accurate to evaluate the transport of radionuclides in compacted media than those obtained from batch experiments. However, most Kd values are acquired by the batch method because of its simplicity and convenience in the experiment. |
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| 然而批量测试的应用性受到讨论和批评，因为技术的发展放松了前述的限制。现已发现批量技术的分配系数（Kd）过于简单，在很多情况下不能代表所关注的反应体系。然而，得到频繁使用的扩散技术对深层地质的放射性核素给出更准确的信息。5,6 一些文献7-9讨论了2种方法得到的Kd和Rf的优势和劣势。总体上，所有实验结果显示，对于评价放射性核素在压缩媒介中的运输，扩散试验得到Kd值比批量实验更准确。然而，由于实验简化便捷，Kd值更多地通过批量方法获得。 |
2楼2014-06-24 10:43:45
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