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目的研究红芪中锂、铍、硼、镁、铝、钙、铬、锰、钴、镍、铜、锌、砷、硒、锶、钼、银、镉、锡、锑、钡、汞、铊和铅24种无机元素的含量及分布特征,并确定红芪的特征无机元素。方法采用电感耦合等离子体质谱(ICP-MS)法测定甘肃不同产区红芪中24种无机元素的含量,用Spss软件中主成分分析法分析红芪中无机元素含量。结果甘肃省不同产区红芪中无机元素含量呈现相似的元素谱排列,微量元素Sr含量较高,Mg、Al、Ni、Sn、Mo、Ag、Sr、Sb 8种元素有地区差异,部分元素含量存在显著的相关性;主成分分析得出5个主因子,前2个主因子方差贡献率为61.826%,其对应的Cr(0.896)、Co(0.901)、Li(0.871)、Be(0.876)、Al(0.882)、Mo(0.904)为红芪的特征元素。结论红芪的元素含量随原子序数的不同呈特征性元素谱分布,不同产地红芪无机元素含量有差别,陇南产红芪无机元素的总含量高于其他地区。
Objective To study the effects of Lithium, Beryllium, Boron, Magnesium, Aluminum, Calcium, Chromium, Manganese, Cobalt, Nickel, Copper, Zinc, Arsenic, Selenium, Strontium, Molybdenum, Silver, Cadmium, Tin, Antimony, Barium, And lead 24 kinds of inorganic elements content and distribution characteristics, and determine the characteristic inorganic elements of Radix. Methods The content of 24 inorganic elements in Radix Hedysari was determined by Inductively Coupled Plasma Mass Spectrometry (ICP-MS). The content of inorganic elements in Radix Hedysari was analyzed by principal component analysis (SPSS). Results The contents of inorganic elements in Radix Hedysari collected from different areas of Gansu Province were similar, with the content of Sr in trace elements being higher. There were regional differences among the eight elements in Mg, Al, Ni, Sn, Mo, Ag, Sr and Sb. There were significant correlations between the two main factors. The principal components analysis showed that the variance contribution rate of the first two principal components was 61.826%, and the corresponding proportions of Cr (0.896), Co (0.901), Li (0.871), Be (0.876 ), Al (0.882), Mo (0.904) are characteristic elements of Radix Hedysari. Conclusion The contents of element in Radix Hedysari vary with the atomic numbers and the content of inorganic elements in Radix Astragali differs in different areas. The content of inorganic elements in Radix Astragali is higher than that in other areas.