介绍了采用ICP-AES法同时测定钛合金中Ta、 Nb、 W元素含量的方法。首先确定了仪器部分工作参数的最佳值，其中激发功率1300 W、雾化器流量0.7 L· min-1、积分次数2次。然后通过对基体、合金元素以及测定元素光谱间的干扰分析研究，确定了Ta、 Nb、 W元素最佳分析谱线的位置，依次为240.063、269.706、207.912 nm。此外，采用内标法对Nb质量分数大于3％的样品的测试结果进行了校正。试样加标回收试验及精密度试验表明采用上述方法可使回收率在99％～102％之间，相对标准偏差小于2.3％，能够满足日常生产的检测要求。
The method of determination Ta , Nb, W elements in titanium alloy by ICP-AES was introduced .The best apparatus working parameters were selected firstly , exciting power was 1 300 W, atomizer flow was 0.7 L· min -1 and the times for integral was twice .The optimum analytical lines of Ta , Nb, W were found out by the analysis , and they were 240.063, 269.706, 207.912 nm, respectively.Besides, The internal correction method was used to check the testing results of the samples which the content of Nb exceed 3%.The recovery and precision tests were also per-formed, the determination recovery could reach 99%~102% and relative standard deviation ( RSD) was less than 2.3%, so this method could meet the requirements of daily testing .
参考文献
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