ICP-AES法测定滑石中主次量成分

Determination of Major and Minor Components in Standard Talc Samples by ICP-AES

本文报道了采用ICP AES法测定滑石中的成分。将滑石试样经碳酸钠、硼砂混合熔剂熔融、酸浸取 ,用电感耦合等离子体原子发射光谱法 (ICP AES)同时测定SiO2 ,MgO ,CaO ,Al2 O3 ,Fe2 O3 ,方法回收率在98 8%～ 10 4 0 % ,测定的RSD(n =6 )在 0 12 %～ 0 2 4%之间 。

The standard talc sample was fused with Na2CO3 and Na2B4O7 and then the fused disc was dissolved with HCl solution. SiO2,MgO,Al2O3,Fe3O2 and CaO in talc samples were determined simultaneously by ICP-AES. The optimum analytical line with high sensitivity and low spectral interference were carefully chosen. The sources and properties of the interference were discussed. The recoveries. for these elements were 98.8%-104.4%, with precision of 0.12%-2.4% RSD (n = 6). The results of major and minor components in talc samples by this method were in agreement with those provided by the standard method.