中药石膏炮制品的X射线衍射分析及指纹图谱的建立

[目的]考察石膏炮制品(煅石膏)X射线衍射图谱特征.建立煅石膏的X射线衍射指纹图谱,评价该方法对生、煅石膏及化学试剂进行区分鉴别的应用价值.[方法]应用X射线衍射法对煅石膏进行定性分析.应用Origin6.0软件比较其共有峰的夹角余弦和相关系数的相似度.[结果]各煅石膏样品X衍射图共有峰相似度均各达到95%以上,与生石膏、化学试剂区别明显.[结论]煅石膏的X衍射分析方法专属性强,准确可行,可作为与生石膏、化学试剂进行区分鉴别的手段,并能全面地、客观地反映出煅石膏的内在质量特征.

X-ray diffraction analysis and establishment of finger print of processed product of gypsum

[Objective] To investigate the X-ray diffraction spectrum of processed product of gypsum (calcined gypsum)and, establish the X-ray diffraction finger print and estimate the application value of this method to distinguish gypsum, calcined gypsum and chemical reagents. [Methods] The calcined gypsum was qualitatively analyzed by adopting X-ray diffraction and the semblance degree of the pub- lic peaks, including angle cosine and correlation coefficient as the research parameters. They were compared by using Or...