电感耦合等离子体原子发射光谱法测定高硅铝合金中Nb、Mo、W、Ta含量

Determination of niobium,molybdenum,wolfram,tantalum in aluminium alloys by inductively coupled plasma atomic emission spectrometry

介绍了用ICP-OES法测定高硅铝合金中铌、钼、钨、钽元素的方法。通过溶样方法的选择、仪器工作参数的优化、基体和共存元素的影响等试验,确定了采用盐酸、氢氟酸和硝酸溶解样品,用基体匹配方法消除基体钛对测定的影响。在仪器最佳工作条件下,选择了Nb：269.706nm、Mo：202.030nm、W：239.708nm、Ta：240.063nm为待测元素分析线,测得的方法检出限是0.001-0.002μg/mL。加标回收和精密度结果表明：本方法快速、准确,可以满足铝合金中的铌、钼、钨、钽元素的测定要求,方法 RSD〈9.45%,回收率90%-110%。

A method for determination of niobium,molybdenum,wolfram,tantalum in aluminium alloys by ICP-AES is proposed.The experiment of instrument parameters,sample dissolution,selection of analytical lines,the effect of matrix and coexist elements on the determination,the comparison of reference materials and the analysis results are carried out.The recovery rate is 90%-110%,RSD≤9.45%.