钪-钙-茜素S异多核络合物的极谱吸附波  

Polarographic Adsorptive Wave of Scandium-Calcium-Alizarin Red S Polynuclear Complex

作　　者：张军 黎拒难[1] 邓培红 

机构地区：[1]湘潭大学化学系,湘潭411105

出　　处：《分析化学》2000年第4期476-479,共4页Chinese Journal of Analytical Chemistry

摘　　要：报道了钪-钙-茜素S（ARS）异多核络合物极谱吸附波的形成及利用它测定钪的最佳实验条件。用此方法测定了矿石中的微量钪，并初步探讨了该极谱波的性质和电极反应机理。在单扫描极谱上用等摩尔连续变化法和单纯形法测得络合物组成的摩尔比为nSe3+:nCa2+:nARS=2:1:2。The optimum conditions for the determination of Sc3+ by using polarographic adsorptive waveof Sc3+ -Ca2+ -alizarin red S (ARS)-polynuclear complex have been investigated. A linear relationshipbetween the concentration of Sc3+ in the range of 1 .0× 10-8 ~ 6.0 × 10-6 mol/L and the peak height wasobserved. It has been used for the determination of trace scandium in ores with satisfactory results. Thepolarographic behavior of the complex has also been discussed. The molar ratio of each component in thecomplex was estimated as nSo(Ⅲ)·nCa(Ⅲ)·nARS = 2: 1: 2.

关 键 词：钪 茜素S 多核络合物 极谱络合吸附波 矿石 

分 类 号：O657.1[理学—分析化学]