ZnO是中村利広推荐做为X射线定量分析的十种内标物质之一。本文指出:该物质各次制样测得不同晶面强度比的相对标准偏差较高。样品经研磨后,某些晶面其强度比变化更甚,这一现象系择优取向所致。因而修正和补充了中村利広所提出的ZnO参考物质不受研磨影响的结论。 ZnO is one of the ten internal standard substances recommended by Nakamura Riello for quantitative analysis of X-rays. The paper points out that the relative standard deviations of the ratio of intensity of different crystal planes measured by each sample of this material are higher. After the sample is ground, the intensity ratio of some crystal planes changes even more, which is caused by the preferred orientation. Thus, the conclusion that ZnO reference substance proposed by Nakamura Lee was not affected by grinding was corrected and supplemented.