原子吸收光谱法测定中药中微量元素

Determination of Trace Elements in Chinese Traditional Medicines by Atomic Absorption Spectrometry

本文选用当归、鸡血藤等七种滋补类中药 ,用原子吸收光谱法测定了其中微量元素的含量。采用4∶1的HNO3 HClO4 混酸体系作为消化液 ,选取样品中当归 ,对各种测定元素做了加标回收率实验 ,回收率高。实验结果表明 ,滋补类中药中Fe ,Mn ,Zn ,Cu的含量较高。

In this paper, we used atomic absorption spectrometry to determine the trace elements in seven kinds of Chinese traditional medicines including Dang-gui, Jixueteng, Dihuang, Honghua, Tusizi, Yinyanghuo, and Shechuangzi. The samples were digested with HNO3-HClO4 with a proportion of 4:1. The rates of standard recovery of Cu, Fe, Mn, Zn, Ni, Co were 99.5%, 100.8%, 97.8%, 97.1%, 102.1% and 96.4% respectively. The results show that the invigorate drugs contain higher amounts of Cu, Fe, Mn, Zn than other elements.