阿胶真伪品的X射线荧光光谱的鉴别研究

Novel Identification of Donkeyhide Glue by X-Ray Fluorescence Analysis

建立了快速鉴别阿胶真伪的新方法。收集6个不同产地的阿胶样品,采用X射线荧光光谱法(XRF)测定了各样品元素种类、含量并作出了元素特征谱,与阿胶对照品的元素特征谱作对比分析。结果表明:6个样品中共有的主要元素为Ca,Na,Cl,K,Fe,Zn,Al和Mg等,但其中Cl,Ca,Na和K元素的含量却与对照品有着显著的差异,且部分特有微量元素只存在于个别样品中。依据这些不同点可以准确地对阿胶的真伪及伪劣品中有害元素的引入来源作出识别和判断。基于XRF法所作的元素特征谱可简捷快速、直观有效的鉴别阿胶真伪,有望应用于其他中药的鉴定。

A new fast identification method for a Chinese patent medicine donkeyhide glue was established.Six samples from different producing areas were collected and determined by X-ray fluorescence analysis（XRF）.Elements characteristic graphs were plotted and compared with those from the comparison sample.Many elements such as Ca,Na,Cl,K,Fe,Zn,Al,Mg,etc are contained in the six samples,but the contents of elements Cl,Ca,Na and K are obviously different.Some other microelements occur only in one or two samples.According to the above differentia the counterfeits of donkeyhide glue can be distinguished successfully by XRF.XRF is accurate,robust and objective,and could be applied in the discrimination of other traditional Chinese medicines.