原子吸收光谱法测定排草中微量元素的含量

Determination of Trace Elements in Lysimachia capillipes Hemsl.by Atomic Absorption Spectrometry

目的:采用原子吸收光谱法测定中药排草中的微量元素含量。方法:用硝酸和高氯酸(4+1)对样品进行消解,火焰原子吸收光谱法测定排草果中Fe,Mn,Zn,Cu微量元素的含量。结果:排草中Fe,Mn,Zn,Cu的含量分别为156.70、340.90、43.15、23.72μg/g。方法回收率在90.56%～103.8%之间,准确可靠,为排草的进一步开发提供参考。

Objective： Determination of the trace elements in the Lysimachia capillipes Hemsl..Methods： A concentrated nitric acid and perchloric acid（4∶1 V/V） mixture solution was used to digest the herbal sample and a flame atomic absorption spectrometric（FAAS） was applied to determine the trace elements including Cu,Mn,Zn and Fe.Results： The quantization result showed that the Lysimachia capillipes Hemsl.contains abundant of trace elements,in which the Fe was 156.70 μg/g,Mn was 340.90 μg/g,Zn was 43.15 μg/g,Cu was 23.72 μg/g,respectively.The recoveries were between 90.56% and 103.8%,which indicate that the method is reliable.Conclusion： The present study provides scientific evidence for further study of Lysimachia capillipes Hemsl.