铋(Ⅲ)-间硝基偶氮氯膦的显色反应研究及其应用  

Studies on the Chromogenic Reaction of Bismuth(Ⅲ)-Chlorophosphonazo-mN and Its Application

作　　者：顾丽忠 吴德怀[1] 沙宁红 周执明[1] 

机构地区：[1]浙江工学院化学工程系

出　　处：《浙江工学院学报》1991年第4期32-35,共4页

摘　　要：本文研究了铋(Ⅲ)-间硝基偶氮氯膦显色体系的光度特性,并确定了测定铋的最佳条件.配合物的最大吸收位于666nm,单、双波长法测得其表观摩尔吸光系数分别为7.73×10~4和1.11×10~5 l·mol^(-1)·cm^(-1).据此提出了测定铋的新方法,用于铅基合成试样中微量铋的测定,结果满意.The photometric character of the bismuth (Ⅲ )-chlorophosphonazo-mN system has been studied. The optimun conditions have been investigated for determination of bismuth. The absorption maximun of the complex is at 666nm with apparent molar absorptivities 7.73×104 and 1.11×l05l·mol-1·cm-1 by single-and dualwavelength methods respectively.The new method for determining bismuth is proposed and has been applied to the determination of bismuth in lead bass synthetic sample with satisfactory results.

关 键 词：铋 偶氮氯膦 CPAmN 分光光度法 

分 类 号：O614.532[理学—无机化学]