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以石蜡为稀释剂 ,采用二 (2 乙基己基 )磷酸为萃取剂对镧系离子的溶剂萃取行为进行了研究 .斜率法表明萃合物组成为Ln(HA2 ) 3.测算了萃取平衡常数及相应的热力学参数 ,并且获得了相邻元素间的分离因数
Solvent extraction of lanthanide ions with di (2-ethylhexyl) phosphoric acid as extraction solvent was studied by using paraffin as diluent.The slope method showed that the composition of the complex was Ln (HA2) 3. The equilibrium constants of extraction and The corresponding thermodynamic parameters, and obtain the separation factor between adjacent elements