摘要
利用Cr6+ 和Cr3 + 自身的颜色 ,寻找了双波长分光光度法测定各自含量时的测量波长和参比波长 ,研究了酸度、干扰离子以及线性范围等测量条件 ,确定了相应的测量方法。实验结果表明 :在强碱性介质中 ,Cr6+ 和Cr3 + 分别在 0~ 2 .5× 10 -4mol/L和 0~ 2 .0× 10 -2 mol/L具有很好的线性关系 。
Using the colour of Cr 6+ and Cr 3+ itself , the measuremeant waveleanth and reference waveleanth are found in measuring each content by double waveleanth photometric method. Measuring conditions including acidity, interfering ions and the linear range are studied. Measuring method is given. The experimental result shows that the linear range(0~2.5×10 -4 mol.l -1 for Cr 6+ and 0~2.0×10 -2 mol.l -1 for Cr 3+ ),accuracy and degree of precision in strong basicity can satisfy the requirement of analysis for the solution of eletrochromium.
出处
《表面技术》
EI
CAS
CSCD
北大核心
2003年第3期52-54,共3页
Surface Technology
关键词
双波长光度法
电镀铬
铬离子
镀液分析
Double waveleanth photometric method,Eletrochromium, Chromic ion
Plating solution analysis