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.
出处
《岩矿测试》
CAS
CSCD
北大核心
1990年第1期51-53,共3页
Rock and Mineral Analysis
