摘要
通过电流、电压、计数时间等不同试验参数的正交试验,确定了X射线荧光光谱法的最佳试验条件.选择铝合金标准样品,建立标准工作曲线,实现了7×××系铝合金中元素Si、Fe、Cu、Mn、Mg、Cr、Ni、Zn、Ti、Zr的准确测定.对该测定方法的精密度进行考察,铝合金样品中各元素测定结果的相对标准偏差均低于0.7%,对标准样品进行分析,测定值与化学法吻合较好,能够满足铝合金各元素的准确测定的需求.
Abstract
Through orthogonal test of different experimental parameters such as current,voltage and counting time,the optimum test conditions of X-ray fluorescence spectrometry were determined.Standard aluminium alloy samples were selected and standard work-ing curves were established.The accurate determination of Si,Fe,Cu,Mn,Mg,Cr,Ni,Zn,Ti and Zr of 7××× aluminium alloy was realized.The precision of the method was investigated,and the relative standard deviation of each element in the aluminium alloy samples was lower than 0.7％.The standard samples were analyzed,and the measured values were in good agreement with the chemi-cal method,which could meet the needs of the accurate determination of each element in aluminum alloy.
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