论文部分内容阅读
1-苯基-3-甲基-4-苯甲酰吡唑啉酮-5(以HPZL表示)具有β-双酮结构。它具有萃取能力强,较好的辐照稳定性和合成方法简单等优点。1959年B.S.Jensen合成了一系列1-苯基-3-甲基-4-酰基代吡唑啉酮-5,测定了它们的电离常数,并且对Be~(2+)、Mn~(2+)、Zr~(4+)、UO_2~(2+)、La~(3+)和Th~(4+)在氯仿—水体系中进行了萃取,求得各个离子的表观平均络合常数。在国内也做了不少工作,诸如HPZL与中性磷萃取剂或有机亚砜的协同萃取效应,用两相滴定法研究螫合萃取和协同萃取机理,以及分析分离方面的应用等。本文研究了HPZL对示踪量铕的萃取机理。
1-Phenyl-3-methyl-4-benzoylpyrazolone-5 (represented by HPZL) has a β-diketone structure. It has the advantages of strong extraction ability, good radiation stability and simple synthesis method. BSJensen synthesized a series of 1-phenyl-3-methyl-4-acyl-pyrazolone-5 in 1959 and measured their ionization constants. ), Zr ~ (4 +), UO_2 ~ (2+), La ~ (3+) and Th ~ (4+) were extracted in chloroform-water system to get the apparent average complexation constants . In China, a lot of work has also been done, such as synergistic extraction of HPZL with neutral phosphorus extractant or organic sulfoxide, two-phase titration of synergistic extraction and synergistic extraction mechanism, and the application of analytical separation. In this paper, the extraction mechanism of HPZL for europium tracers was studied.