珍珠粉与珍珠层粉的鉴别.pdfVIP

珍珠粉与珍珠层粉的鉴别 摘 要 珍珠粉是一种名贵中药材,具有安神定惊等功能,目前市场上有大量的仿冒 品如珍珠层粉、贝壳粉等,因此寻找一种方便快捷的鉴别方法具有重大的现实意 。 义 通过理化试验、红外、X 射线衍射、ICP-AES、热重和差热分析等分析方法， 针对不同产地的珍珠粉与珍珠层粉的元素组成，晶体结构、物理特性等的物性进 行的鉴别。实验结果表明:理化方法无法区别珍珠粉和；X 射线衍射分析能区分 出文石与方解石的结构，而珍珠粉、珍珠母、镭贝与白蝶贝的晶体结构主要为文 石；而热分析法能够正确鉴别出珍珠粉与珍珠层粉。可以说，热分析法是目前鉴 别珍珠粉及珍珠层粉的最理想的方法。 关键词：珍珠粉,珍珠层粉,贝壳,仪器分析 I 珍珠粉与珍珠层粉的鉴别 Abstract In the past a few decades, pearl farming has witnessed a gorgeously rapid development in China that majority pearls are produced wherefrom,especially pearl powder, one of the most important and expensive Chinese traditional medicines. Large quantities of fake commodities such as talcum powder, titanium dioxide, and shell powder are also seen in the market, which makes the study on how to identify them very important and necessary. By the fact that the physics and chemistry experiment, is infrared , X-ray diffraction , ICP-AES , hot weight and bad thermal analysis etc. analysing method , specifically for be distinguished that the pearl powder thing nature being unlike place of production with pearl tier of pink elements composition , crystal texture , physics characteristic property etc. carries out. The experiment bear fruit is indicated: Physics and chemistry method has no way to draw differentiating pearl powder; X-ray diffraction analyses the structure being able to distinguish out culture stone and the calcite , pearl powder , pearl mother , radium cowry and crystal texture of white butterfly cowry are culture stone but mainly; But hot analysis law is able to distinguish ou