锆-钙-茜素红S异多核配合物共显色效应的研究及应用  

CO-COLOURATION OF ZIRCONIUM-CALCIUM-ALIZARINE RED S MIX-POLYNVCLEAR COMPLEX AND ITS ANALYTICAL APPLICATION

作　　者：黎拒难[1] 张妙龄[1] 王岳松 

机构地区：[1]湘潭大学化学化工学院,湘潭411105

出　　处：《湘潭大学自然科学学报》1997年第1期48-51,共4页Natural Science Journal of Xiangtan University

摘　　要：报道了锆－钙－茜素红S异多核配合物的形成，共显色效应的光度特性及测定锆的最佳条件．建立了光度法测定痕量锆的新方法．其表观摩尔吸光系数为3．92×104L·mol－1·cm－1，比其二元配合物的摩尔吸光系数显著增加．Zr（Ⅳ）浓度在0～1．50mg／L范围内符合比耳定律．用本方法测定了矿石中的痕量锆，结果良好．The formation of zirconium -calcium -alizarine red S mix - polynuclear complex and its co-colouration effect have been investigated. The optimum conditions of the determination of Zr(Ⅳ) by use of its co - colouration have been reported. The polynuclear complex exhibits an absorption maximum at 520 nm and its molar absorptivity is found to be 3.92 ×104 L·mol-1cm-1 The molar ratio of each component in the complex has been estimated as Zr(Ⅳ):Ca2+: ARS= 1: 1: 4. Beer's law is obeyed over the range of 0~1. 5 mg/L for Zr (Ⅳ). It can be used for the determination of trace Zr(Ⅳ) in mineral samples.

关 键 词：锆 钙茜素红S 显色效应 异多核配合物 光度法 

分 类 号：O614.412[理学—无机化学] O641.4[理学—化学]