摘要
研究了镁及镁合金中锆含量的测定方法。样品以硝酸和氢氟酸溶解,用高氯酸赶尽剩余的氢氟酸,在8.0moL/L左右的硝酸介质中,偶氮胂Ⅲ与锆形成稳定的蓝色络合物,最大吸收波长665 nm处测定其吸光度,锆含量在0～50ug/50ml范围内符合郎伯-比尔定律。相对标准偏差:0.74%～1.21%,加标回收率为:98.9%～104.4%。
The measuring methods for Zr in Mg and Mg alloy were described in the paper. A measuring method for Zr in Mg and Mg alloy by arsenazo Ⅲ photometric method was put forward. This method has the advantage of low interference, high sensitivity, good repeatability and accurate analysis.
出处
《铝加工》
CAS
2011年第1期35-38,共4页
Aluminium Fabrication
基金
重庆市科委资助项目
编号:CSTC
2009AB4007
关键词
镁合金
偶氮胂Ⅲ
光度法
锆
Mg alloy
arsenazo Ⅲ
photometric method
Zr
