不同产地山药的XRF和PXRD分析与表征  

Study of Dioscorea Opposita Thunb from Different Producing Areas with XRF and PXRD

作　　者：张景超[1] 朱艳英[1] 丁喜峰[1] 刘美义[1] 郭西华[1] 吴鹏乐[1] 关颖[1] 

机构地区：[1]燕山大学理学院,河北秦皇岛066004

出　　处：《光谱学与光谱分析》2012年第7期1972-1974,共3页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金项目(60977061;50875232)资助

摘　　要：共用X射线荧光(XRF)和X射线衍射(PXRD)技术从整体上对河北道地药材———祁山药和市售山药的元素种类、含量及主要组分的微结构进行测定并对比分析。结果表明,祁山药比市售山药多Mg,Zn,Cr元素,少Cu,Al,Mn元素,且两组山药的元素含量也有所不同;两组山药中均含有淀粉,但市售山药为C+V型淀粉结构,祁山药为B型结构,同时都含少量的一水草酸钙。这两种技术共用适于对山药的元素和微结构分析及产地的表征与鉴别。The contents of various elements in rhizoma dioscoreae were analyzed and compared with those of shishou D. opposita Thunb on the whole jointly by XRF and PXRD. The results showed that the element Cu, A1 and Mn could not be detected in rhi- zoma dioscoreae, but the element Mg, Zn and Cr were found, and other elements contents changed to different degrees; there are starch and whewellite in both groups, the crystal type of starches separated from rhizoma dioscoreae cultivars was a typical B-type pattern, but as C-type and V-type in shishou D. opposita Thunb, which is a mixture of A-type, B-type and V-type. The combination of two testing techniques could be applied to the mensuration and analysis of the elements and micro-structural of Dioscorea opposita Thunb which could be from different producing areas.

关 键 词：祁山药 淀粉 一水草酸钙 XRF PXRD 

分 类 号：O657.3[理学—分析化学] R282[理学—化学]