摘要
二乙基二硫代氨基甲酸钠(铜试剂,DDTC)在弱酸性溶液中能与一些金属阳离子形成难溶于水的络合物,达到分离干扰元素的目的。介绍了在pH5～6缓冲液中,采用EDTA络合滴定法测定新型冶金原材料高钛铁中铝元素含量的方法,结果表明,RSD为0.79%～1.84%,结果准确。
The copper reagent DDTC in combination with some metal cations is able to form the insoluble complexes in the solution of weakly acidity, that the interference element can be separated from this system. In this article, the method determining aluminum in new iron alloy with higher content of titanium in the buffer solution of pH = 5 to 6 by adopting EDTA complexometric titration was introduced. The analytic results were accurate with the RSD in the range of 0.79%～ 1.84%.
出处
《金属材料与冶金工程》
CAS
2007年第1期50-52,56,共4页
Metal Materials and Metallurgy Engineering
