【摘要】 报道了在模拟生理条件 ( 37℃ ,c =0 .15mol· L-1Na Cl)下用精密 p H电位法对 15种稀土元素与 L-组氨酸及 L-谷氨酸溶液体系三元配合物稳定常数的测定结果 ,实验数据处理用程序Miniquad- 82 A完成 ,玻璃电极的选择及校正用 Magec程序完成 .结果表明在该三元体系中普遍存在 3种类型的酸式配合物 ( 1111,1112及 1113型 ) ,且每一类型配合物的稳定常数相差较小 .更多还原

【Abstract】 The stability constants of ternary complexes of rare earth ions with L-histidine and L-glutamic acid were determined potentiometrically at the physiolgical conditions ( 37 ℃,c=0.15 mol·L -1 NaCl). The computer programs of Magec and Miniquad-82A were used for data process. Three types of ternary complexes have been ascertained as the models of 1111,1112 and 1113 ( RE:L:L: H, RE = rare earth ions, L=L-histidinate, L=L-glutamate, H=proton).更多还原