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本文论述了用萃取-分光光度法测定磷酸溶液中铀的含量,对此,研究过几种技术,其中适用于低铀含量(0.02～0.2g/l)的方法之一是以二(2-乙基己基)磷酸(DEHPA)和三辛基氧化膦(TOPO)协同萃取铀(Ⅵ)为基础,经反萃后用偶氮胂Ⅲ进行比色测定。用1-苯基-3-甲基-4-0苯甲酰吡唑啉酮-5(PMBP)萃取铀Ⅵ尚未研究过。但据锕系元素萃取行为的相似性来推测,可望获得较好的萃取率。另一方面,PMBP的酸性强于噻吩甲酰三氟丙酮(TTA),
This article discusses the determination of uranium in phosphoric acid solutions by extraction-spectrophotometry. Several techniques have been studied for this. One of the methods applied to low uranium (0.02-0.2 g / l) Ethyl hexyl) phosphoric acid (DEHPA) and trioctylphosphine oxide (TOPO) to extract uranium (Ⅵ), and the colorimetric determination of arsenazo Ⅲ after stripping was carried out. Uranium Ⅵ extraction using 1-phenyl-3-methyl-4-benzoylpyrazolone-5 (PMBP) has not been studied. However, the actinide extraction behavior of the similarity to speculate, is expected to obtain a better extraction rate. On the other hand, the acidity of PMBP is stronger than that of the sooyltrifluoroacetone (TTA)