论文部分内容阅读
本文系统地介绍目前流行的三种主要的无标 X 射线定量相分析的方法(即 Hubbard)法,(Zevin 法和联立方程法),它们的原理及其应用实例。其中 Hubbard 方法用于晶体结构参数已知的情况下,尤其对于离子晶体,其理论计算值与实验测定值很相近。Zevin 方法用于吸收系数已知的试样,它与 Hubbard 的方法同样有实用性和推广价值。至于联立方程法用于相组分不多的情况下,它可以起到无标求 K 值的效果。各种方法的适用性须与试样的具体情况相结合,才能取得最佳效果。
This article systematically introduces the three prevailing methods of quantitative analysis without standard X-ray (Hubbard), (Zevin method and simultaneous equations method), their principle and application examples. The Hubbard method is used in the case of known crystal structure parameters, especially in the case of ionic crystals, and its theoretical calculated value is very close to the experimental value. The Zevin method is used for samples with known absorption coefficients and is as practical and promotional as the Hubbard method. As for the simultaneous equations for the phase component of the case, it can play a standard K value of the effect. The applicability of various methods must be combined with the specific circumstances of the sample, in order to achieve the best results.