摘要
用铜试剂沉淀分离干扰元素,在pH≈3的弱酸性环境,加偶氮胂Ⅲ与稀土铈络合生成蓝紫色络合物,于波长650nm处直接对钢中的稀土铈进行光度法测定。结果表明,偶氮胂Ⅲ对稀土铈具有稳定的分析性能。该法简单、实用,快速、准确。
The rare earth cerium content in steel is determined by spectrophotometric method with a 650nm wave, using copper reagent in solution to isolate interrelated elements, then, at pH ≈3, and adding arsenazo Ⅲ to develop blue complex compound with cerium. It is show that arsenazo III has a stable reaction for admeasurement of rare earth cerium content in steel. It is a simple, practical, and effective method.
出处
《冶金标准化与质量》
2007年第6期17-18,共2页
Metallurgical Standardization & Quality
关键词
铈
偶氮胂Ⅲ
铜试剂
分光光度法
cerium
arsenazo iii
copper reagent
spectrophotometric method
