火焰原子吸收光谱法测定野生羌活和宽叶羌活不同部位中的微量元素

目的: 测定野生羌活和宽叶羌活根、茎、叶、叶柄和种子中Ca、Mg、Fe、Mn、Cu、Zn 6种微量元素的含量。 方法: 采用空气-乙炔火焰原子吸收光谱法测定不同部位微量元素的含量,应用SPSS 16.0分析软件对结果进行统计分析。 结果: 相同部位不同元素的含量存在差异,野生羌活和宽叶羌活同一部位均以Ca元素含量最高,Cu、Zn元素含量最低。同种元素在不同植物不同部位中的含量也有差异,野生羌活Ca元素以叶片中含量最高,种子中含量最低;Mg、Cu、Zn元素以叶柄中含量最高,根和种子中含量最低;Fe元素以茎中含量最高,叶柄中含量最低;Mn元素以叶片中含量最高,茎中含量最低。野生宽叶羌活Ca元素以叶片含量最高,根中含量最低;Mg、Mn、Zn元素的含量以叶片中最高,茎中含量最低;Cu元素以叶中含量最高,根和叶柄中含量最低;Fe元素以根中含量最高,茎和种子中含量最低。 结论: 从微量元素角度分析,野生羌活和宽叶羌活的叶片、叶柄和种子等部位具有潜在的药用价值,可为综合开发利用有限的野生羌活药材资源提供一定的参考。

Objective: To determine the contents of six trace elements Ca,Mg,Fe,Mn,Cu and Zn in different organs(root,stem,leaf,petiole,seed) of wild Notopterygium incisum Ting ex H.T.Chang and N.forbesii Boiss,analyze the characteristics of trace elements contents in different parts. Methods: The contents of six trace elements were determined by flame atomic absorption spectrometry(FAAS);SPSS 16.0 analysis software was applied to analyze the results. Results: The study indicated that the contents of different elements had obvious difference in the same organ and the same element content was different in different parts of different plants.The contents of Ca were the highest in all organs and the contents of Cu and Zn elements were the lowest.To wild Notopterygium incisum Ting ex H.T.Chang,the content of Ca element was the highest in leaf and the lowest in seed;the contents of Mg,Cu,Zn were the highest in the petiole and the lowest in root and seed;the content of Fe was the highest in stem,and the lowest in petiole;the content of Mn element was the highest in leaf and the lowest in stem.And to N.forbesii Boiss,the contents of Ca element was the highest in leaf and the lowest in root;the contents of Mg,Mn,Zn were the highest in the leaf and the lowest in stem;the content of Cu was the highest in leaf,and the lowest in root and petiole;the content of Fe element was the highest in root and the lowest in stem and seed. Conclusion: From the perspective of trace elements,the potential medicine values of leaf,petiole and seed can provide some references for the comprehensive development and utilization of limited wide Notopterygium forbesii resources.