在样品厚度足够薄的情况下,X荧光强度与样品中待测元素的重量浓度成正比。若将标准与样品在相同条件下激发测量,则有: G_x=C_s·N_x/N_s式中,O_x、O_s分别为样品和标准中待测元素量;N_x、N_s分别为样品和标准中待测元素特征X射线峰面积,我们由不同浓度单元素标准的测量结果,用最小二乘法求出线性标定方程。同时,我们还利用混合标准样品, In the case of a sufficiently thin sample thickness, the X fluorescence intensity is proportional to the weight concentration of the element to be measured in the sample. If the standard and the sample under the same conditions to stimulate the measurement, are: G_x = C_s · N_x / N_s Where, O_x, O_s, respectively, for the sample and standard elements to be measured; N_x, N_s, respectively, Element characteristics of X-ray peak area, we have a single concentration of different concentrations of standard measurement results, using the least squares method to find the linear calibration equation. At the same time, we also use mixed standard samples,