【摘要】 为研究比较不同X射线定量分析方法的优缺点,对CeO2-TiO2二元混合物体系样品分别用内标法、K值法和绝热法进行定量分析,着重比较了三种方法在实验步骤、可操作性和结果相对误差等方面的差别.结果表明,内标法操作程序较复杂,结果误差较大,不便在实际操作中推广应用;绝热法是实际应用中较便捷、误差较小的定量分析方法.然而应用绝热法进行定量分析时,要减小实验误差就必须获得待测物相准确的参比强度值(即K值),因此定性分析是其关键步骤.更多还原

【Abstract】 In order to compare the advantages and disadvantages of different X-ray diffraction quantitative methods,three X-ray quantitative analysis methods were used in the experiment with CeO2-TiO2 two-component sample.High emphasis was paid on the differences of experiment process,convenience of operation and value of relative error.The research showed that internal-standard-matter method wasn’t recommended in practice because of its complicated process and larger value of error.On the contrary,out-of-heat method was the best one in practice when compared in convenience and value of relative error.However,in order to obtain a more accurate K-value,which is indispensable in out-of-heat method,qualitative analysis is its key step.更多还原