ICP-OES和FAAS测定九水合硝酸铝中钠的比较

Comparison of Sodium Determination in Aluminum Nitrate Nonahydrate by ICP-OES and FAAS

对九水合硝酸铝样品中钠质量分数分别采用FAAS和ICP-OES进行了对比分析。实验表明:FAAS测定样品中Na的RSD分别为2.56%、1.99%,加标回收率分别为104%、100%;ICP-OES测定样品中Na的RSD分别为1.73%、1.57%,加标回收率分别为99%、100%。FAAS和ICP-OES测定时都需考虑基体干扰,两种仪器测定方法不存在显著性差异,均可用于九水合硝酸铝中钠的测定。

The mass fraction determined results of sodium in aluminum nitrate nonahydrate with FAAS and ICP-OES were compared.The results showed that the RSD of FAAS in the determination of Na were 2.56%and 1.99%,the recovery rate were 104%and 100%.The RSD of ICP-OES in the sample were 1.73%and 1.57%,the recovery rate were 99%and 100%.The matrix interference should be considered in the determination of FAAS and ICP-OES,and there was no significant difference between the two methods,they could used for the determination of sodium in aluminum nitrate nonahydrate.