钇-5-Br-PADAP-CPC-OP显色反应的研究  

Study on Colour Reaction of Yttrium with 5-Br-PADAP-CPC-OP

作　　者：王献科 赵广翰[2] 

机构地区：[1]兰州钢厂设计研究所 [2]西北民族学院

出　　处：《岩矿测试》1990年第1期51-53,共3页Rock and Mineral Analysis

摘　　要：研究了钇(Ⅲ)-5-Br-PADAP-CPC-乳化剂OP混合体系的光度特性,在pH7.5～9.8范围内,显色体系在580nm处有最大吸收峰,空白值低,对比度(Δλ)较高,摩尔吸光系数ε为1.0×10~5。配合物组成Y:5-Br-PADAP:CPC为1:4:3,形成稳定常数(logβ)为9.84。在0—45μg Y/50ml范围内服从比尔定律。该法已成功地应用于测定Fe-Cr-Al合金和矿物中痕量钇。The spectrophotometric properties for colour system of yttrium (Ⅲ) with 5-Br-PADAP-CPC-emulsifier OP have been Studied. The system exhibits an absorption maximum at 580nm(pH 7.5-9.8). The apparent molar absorptivity is 1.0× 105L. mol-1·cm-1. The composition ratio is Y(Ⅲ):5-Br-PADAP: CPC= 1:4:3, the formation constant is logβ = 9.84. Beer's law is obeyed in the range O-45 μg/50ml. This method has been successfully applied to the determination of trace yttrium in Fe-Cr-Al alloys and ores.

关 键 词：钇 显色反应 BR PADAP CPC 

分 类 号：O614.322[理学—无机化学]