应用能量色散X射线荧光分析仪对系列铅黄铜合金标样进行能谱测量,根据基本参数法原理,获取了方法中所需的质量吸收系数(μ)、激发因子(司等关键参数,编写计算程序,对标样中铜、锌含量进行了分析。结果表明,基本参数法能克服铜和锌元素间的吸收增强效应,该方法测量铅黄铜合金中铜和锌的含量范围分别为54%弗4%、33%-45%,对铜、锌的相对标准偏差(m=10)分别为0.10%、0.15%。
According to fi,mdamental parameter method theory, gained the key parameters such as mass-absorption coefficients and excitation factors and wrote the calculation procedure. In experiment, a series of lead brass alloy standard samples were analyzed with an energy dispersive X-ray fluorescence spectrometer and calculated the contents of Cu, Zn of the samples via the fundamental parameter calculation procedure. The result shows the fundamental parameter method can overcome the absorption-enhancement effect between Cu and Zn elements well. The measured contents of Cu and Zn is respectively 54%-64% and 33%-45%, the precision of the method is 0.10% and 0.15 % respectively for Cu and Zn.