铌钽矿中小量铀钍的测定一般采用分别测定法,步骤较繁,时间较长。1-苯基-3-甲基-4-苯甲酰基吡唑酮-5(PMBP)萃取铀钍希土等元素的性质已有许多报导并作过综述。但应用于易水解元素铌钽钛锆等矿石中萃取铀钍希土元素时,仍需预先进行分离。在有机络合剂存在下,用PMBP萃取铀钍希土元素的行为,迄今未作过系统的报导。 Determination of niobium and tantalum ore in a small amount of uranium thorium, respectively, the general determination of the method, the more complicated steps, a longer time. The properties of 1-phenyl-3-methyl-4-benzoylpyrazolone-5 (PMBP) extraction of uranium, thorium and other elements have been reported and reviewed. However, when used in the extraction of uranium-thorium rare earth elements such as niobium-tantalum zirconium titanate and other elements that are easily hydrolyzed, it still needs to be separated in advance. In the presence of organic complexing agent, the extraction of uranium-thorium rare earth elements by PMBP has not been reported systematically.