钆镁合金中稀土总量的测定——草酸盐重量法

Determination of Total Rare Earth Content in Gd-Mg Alloy with Oxalate Gravimetric Method

研究了草酸盐重量法测定钆镁合金中稀土总量。采用二次氨水分离镁对测定的干扰。进行了加料回收和精密度实验,回收率在97%～103%之间,被分析元素的测定范围在15%～90%。对草酸盐测定钆镁合金中稀土总量的研究结果令人满意。

Oxalate gravimetric method was used to determine the total rare earth content in Gd - Mg alloy. Magnesium in- terference was eliminated by a two - step separation of Gd and Mg with amnonia water. Recovery at 97% ~ 103% was ob- tained. This method is accurate.