铝—钕—钛三元合金中钕的测定—草酸盐质量法

Oxalic Acid Gravimetric Determination of Neodymium in Al-Nd-Ti Alloys

摘要:

研究了Ａｌ５０－Ｎｄ２０－Ｔｉ３０三元合金中Ｎｄ的测定方法。试样用１＋１硫酸溶解，在ＰＨ１．５－２．０的酸性溶液中，以草酸沉淀溶液中的稀土钕，与钛，铝等其它元素分离，并将稀土灼成氧化物后称量，计算其含量。结果表明，该方法准确，高效；其回收率为９８．５％－１０１．３％，相对标准偏差为１．３４％。

Abstract:

A simple accurate method has been developed for the determination of neodymium in the Al-Nd-Ti alloys. The sample wasdissolved in sulphuric acid (1+1) and the neodymium was separated from titanium, aluminum etc. through precipitation in an oxalicacid solution with pH 1. 5~2. 0. The neodymium content was calculated through weighing the neodymia obtained by calciningneodymium oxalate. This method has been successfully applied to routine analysis. The recovery of neodymium is 98. 5%~101. 3%.Relative standard deviation is 1. 34%.