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目的探讨微量元素用于瑶药“猛老虎”产地溯源的可行性。方法用ICP-MS法测定了广西10个产地“猛老虎”中14种微量元素(As,Ba,Cd,Cr,Cu,Hg,Ni,Pb,Se,Sn,Ti,Tl,V,Zn)的含量,采用因子分析和聚类分析方法研究了猛老虎样本的元素含量特征。结果因子分析总方差的78.448%的贡献来自前两个因子,所对应的Ti、V、Ni、Ba、As、Cd、Sn、Cu、Pb是“猛老虎”的特征微量元素。聚类分析的结果表明:当以λ=5为临界值进行层次聚类分析时,样本聚成三类,荔浦县、龙胜县、恭城、崇左市、象州县、玉林市“猛老虎”为一类,南宁市、武鸣县、平乐县白花丹为一类,金秀县“猛老虎”单独为一类。结论 “猛老虎”中微量元素可以用作药材归属的辨别。
Objective To explore the feasibility of using trace elements for the traceability of Yao drug “Tigress ” origin. Methods The contents of 14 trace elements (As, Ba, Cd, Cr, Cu, Hg, Ni, Pb, Se, Sn, Ti, Tl, V, Zn) content, using element analysis and cluster analysis of the Tigers sample elemental content characteristics. Results The total contribution of 78.448% of the total factor analysis came from the first two factors. The corresponding Ti, V, Ni, Ba, As, Cd, Sn, Cu and Pb were the characteristic trace elements of “Tigers.” The results of cluster analysis showed that when the cluster analysis was carried out with λ = 5 as the critical value, the samples clustered into three categories: Lipu County, Longsheng County, Gongcheng City, Chongzuo City, Xiangzhou County, Yulin City, “Tigress” as a category, Nanning City, Wuming County, Pingle County Plum Blossom as a category, Jinxiu County “Tigress ” alone as a category. Conclusion The trace elements in Tigress can be used as the identification of medicinal materials.