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本专题研究了用二烷基－（二芳基）〔二乙基氨基甲酞甲基〕氧化磷（ＣＭＰＯ）从高氯酸溶液中萃取锯（Ⅲ）、铕（Ⅲ）和铀（Ⅵ）。试验表明，在萃取上述元素时，从高氯酸溶液中萃取比从硝酸溶液中萃取更为有效。在高氯酸介质中，“异常芳基效应”比在硝酸介质中更为显著。在高氯酸介质中，上述元素的溶剂化数也会增加。当采用芳基取代的萃取剂时，溶剂化数极高，但是，在采用烷基取代的化合物时，则不会达到同样高的数值。试验表明，在硝酸和高氯酸溶液中，“异常芳基效应”的值直接取决于芳基和烷基取代的ＣＭＰＯ络合物中元素溶剂化数值之差。事实上，在磷酸和硫酸中，镅（Ⅲ）、铕（Ⅲ）和铀（Ⅵ）并不被ＣＭＰＯ溶液萃取。本专题还研究了从不同的酸溶液中萃取元素时，高氯酸浓度对其萃取率的影响。试验发现。在某些情况下，分配系数显著增大，协同效应也相应增加。本方法通过增加少量的高氯酸即可提高元素的萃取率，因此可以推荐用于从硝酸、磷酸和硫酸中萃取和预浓缩镅（Ⅲ）和铀（Ⅵ）。
The present study investigated the extraction of saw (Ⅲ), europium (Ⅲ) and uranium (Ⅵ) from perchloric acid solution using dialkyl- (diaryl) [diethylaminomethylphthalide] . Experiments show that in the extraction of the above elements, the extraction from the perchloric acid solution is more effective than the extraction from the nitric acid solution. In perchlorate media, the “anomalous aryl effect” is more pronounced than in nitric acid media. In perchloric acid medium, the solvating number of the above elements also increases. When aryl-substituted extractants are used, the solvatisation number is extremely high, however, with alkyl-substituted compounds, the same high values are not achieved. Experiments have shown that the value of the “anomalous aryl effect” in nitric acid and perchloric acid solutions directly depends on the difference between the element solvating values in the aryl and alkyl substituted CMPO complexes. In fact, 磷 (Ⅲ), europium (Ⅲ) and uranium (Ⅵ) are not extracted by CMPO solution in phosphoric acid and sulfuric acid. The present study also investigated the effect of perchloric acid concentration on its extraction yield when extracting elements from different acid solutions. Test found. In some cases, the distribution coefficient increased significantly and the synergistic effect increased accordingly. This method can be used to extract and preconcentrate 镅 (Ⅲ) and uranium (Ⅵ) from nitric acid, phosphoric acid and sulfuric acid by adding a small amount of perchloric acid to increase the elemental extraction rate.