滴定法测定铜锌合金中铝

Determination of aluminium in Cu-Zn alloy by titrimetry

介绍了用HCl-H2 O2 溶解合金试样 ,锌粉置换试液中的大量铜 ,KF EDTA络合滴定法测定铜锌合金中的铝 ,方法简便、快速。样品加标回收率为 98 1%～ 116 1% ,RSD =2 5 % (n =10 )。

In this paper the method for dissolving alloy sample by HCl H 2O 2,replacing copper by zinc powder in the solution and determining aluminium in Cu Zn alloy by KF EDTA complexometric titration was introduced This method is rapid and easy to operate Recoveries of standard addition are in the range of 98 1%-116 1% with precision of 2 5% RSD(n=10)