用X射线荧光光谱基本参数法测定了Y1-xPrxBa2 Cu3Oy系列样品中的钇镨钡铜百分含量 ,然后折算成它们的原子比 .实验结果表明测量值与样品的名义组分的确有差别 ,这可能就是各超导小组报道的Tc ～x曲线形状不一样的原因之一 .实验还显示Tc 与x的关系不是一条简单的二次曲线 .讨论了氧对分析元素测量值的影响 ,氧对各分析线的质量吸收占基体总的质量吸收份数最大不超过 3.41 % . The yttrium praseodymium barium copper content in the Y1-xPrxBa2 Cu3Oy series of samples was measured by X-ray fluorescence spectrometry and then converted into their atomic ratios. The experimental results show that the measured values ​​are quite different from the nominal compositions of the samples, It may be one of the reasons why the shapes of Tc-x curves reported by superconductor groups are different.The experiment also shows that the relationship between Tc and x is not a simple quadratic curve.The effect of oxygen on the measured values ​​of elements is discussed, Analysis of the quality of the line to absorb the total mass of the matrix absorption of the largest number of not more than 3.41%.