3种补气补虚类中草药原药及水煎液中微量元素的测定

Determination Trace Elements Content of the Raw Drug and Its' Decoction in Three kinds of Qi tonic Chinese Medicinal Herb

目的:测定人参、党参、当归3种中药原药及其水煎液中元素的含量,研究补气补虚类中草药中不同微量元素的含量特点,以及各种微量元素在水煎液中的含量情况,探讨微量元素与补气补虚类中草药的关系。方法:采用火焰原子吸收光谱法测定人参、党参、当归3种中草药中的锌、镁、锰、铜4种元素。结果:所测3种补气补虚类中药中4种人体必需的元素含量,镁元素的含量较高,其次是锰和锌,铜元素含量最低,其中当归镁、锌含量最高,人参锰、铜含量最高。水煎液中微量元素煎出率较低,最高为当归中的锰元素,仅有29.17%,最低为人参锌元素,为10.31%。结论:传统煎煮法煎出率较低,镁元素含量较高,铜的含量较低,铜锌比值小,可能是补气补虚类中药的特点。

Objective：To test and determine the amount of various kinds of trace elements in the three kinds of original traditional Chinese medicine （Ginseng, Codonopsis, Chinese Angelica） and in the decoction of that three kinds of traditional Chinese medicine; and make a research on the amount of different trace elements in traditional Chinese medicine that can tonify Qi as well as in the decoction of traditional Chinese medicine with a view to do a preliminary study on the relationship between trace elements and tonic herbs. Methods： Measure the amount of four elements （zinc, magnesium, manganese, copper）in Ginseng, Codonopsis, Chinese Angelica？ by using flame atomic absorption spectrometry. Results：Among the 4 essential elements （zinc, magnesium, manganese, and copper） for human body in the three kinds of tonic Chinese medicine, the amount of Mg is highest, followed by Mn and Zn, Cu the lowest. Chinese angelica contents the highest amount of magnesium and zinc; Ginseng contents the highest amount of copper and manganese. Overall, the decocting rate of elements in the traditional Chinese medicines is low; the highest for Angelica manganese is only 29.17 %, the lowest for Ginseng zinc, 10.31%. Conclusion： The decocting rate of traditional decocting method is low. The content of Magnesium is high, and that of copper is low while the ratio of copper and zinc is low, which may be the characteristics of the tonic traditional Chinese medicine.