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研究了二（2，4，4-三甲基戊基）单硫代膦酸（HBTMPTP，HL）和支链三烷基氧化膦（Cyanex925，B）的正己烷溶液在H2SO4介质中对Sc（III）的萃取性能，结果表明，在较低酸度（CH2SO4〈0．25mol／L）时存在协同效应，用斜率法确定了Sc（III）的协萃配合物的组成为Sc（HL2）2B3（SO4）1／2，计算了协萃反应的平衡常数，讨论了协萃配合物的IR谱和FAB－MS．
The effects of molar ratio of HBTMPTP (HL) and branched-chain trialkylphosphine oxide (Cyanex925, B) in n-hexane on the activity of Sc III). The results showed that there was a synergistic effect at lower acidity (CH2SO4 <0.25mol / L), and the composition of the scaffold complex of Sc (III) was Sc (HL2) 2B3 SO4) 1/2, the equilibrium constant of the coprecipitation reaction was calculated. The IR spectra and FAB-MS of the complex were also discussed.