用ICP-AES测定15个不同产地的黄芪中的14种微量元素,以其含量为指标,进行因子分析,提取7个特征元素,并以特征指标进行样品的谱系聚类分析,把不同产地的黄芪分类,为地道性中药材的鉴别提供可靠方法elements(TE)in Astragalus of 15 different places of origins were determined by ICP-AES.The content of TE in Astragalus was used as analytical index.The factor analysis was applied to extract characteristic indices.7 characteristic indices were selected to perform hierarchical cluster analysis.The result showed that the Astragalus of different species and producing areas can be easily recognized and distinguished
