轻稀土-锌-茜素红S异多核配合物极谱吸附波的研究  

Polarographic Adsorptive Wave of Light Rare Earth-Zinc-Alizarine Red S Mix-polynuclear Complex

作　　者：黎拒难[1] 李定文 

机构地区：[1]湘潭大学化学系,湘潭411105

出　　处：《分析化学》1991年第7期831-834,共4页Chinese Journal of Analytical Chemistry

摘　　要：本文报道了轻稀土(La、Ce、Pr、Nd、Sm、Eu)-锌-茜素红S异多核配合物极谱吸附波的形成条件。用此方法测定了土壤和稀土球墨铸铁中轻稀土的含量,并探讨了该极谱波的性质和电极反应机理。在单扫示波极谱上用单纯形法和连续变化法测定了该体系吸附型体的组成比为:La:Zn:ARS=1:1:4。The conditions of the polarographic adsorptive waves of light rare earth (La, Ce, Pr, Nd, Sm, and Eu)-zinc-alizarine red S(ARS) mix-polynuclear complex are reported. This method has been applied to the determination of trace amounts of light rare-earths in the soil and nodular cast irones with satisfactory results. Furthermore thepolarographic behaviours and the electrode reaction mechanism have been studied. By using single sweep oscillopolarography, the composition ratio of the adsorptive bady has been determined to be La: Zn: ARS=1: 1: 4 by the simplex method and the method of continuous variations.

关 键 词：稀土 测定 茜素红S 极谱吸附波 

分 类 号：O614.33[理学—无机化学]