Determination of trace elements in Chinese medicinal plants by instrumental neutron activation analysis |
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| Authors: | Tuo Fei Li Dehong Zhou Fengqun Luo Junhua Tuo Hua Kong Xiangzhong |
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| Institution: | (1) National Institute for Radiological Protection, China CDC, 100088 Beijing, People’s Republic of China;(2) Lanzhou University, 730000 Lanzhou, Gansu Province, People’s Republic of China;(3) National Institute of Metrology, 100013 Beijing, People’s Republic of China;(4) Department of Nuclear Physics, China Institute of Atomic Energy, 102413 Beijing, People’s Republic of China |
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| Abstract: | Roots of Astragalus membranaceus, Angelica sinensis, Glycyrrhiza uralensis and Codonopsis pilosula, which were often used as herbs in traditional Chinese medicine, were analyzed by Instrumental Neutron Activation Analysis
(INAA). The samples were collected in Gansu, northwest of China and irradiated at the 15 MW heavy water reactor in China Institute
of Atomic Energy (CIAE). The induced activities were counted by a well calibrated low background γ-spectrometer equipped with
a high efficiency coaxial high-purity germanium (HPGe) detector. The concentrations of eighteen trace elements (Ca, Fe, Na,
Zn, Ba, Rb, Ce, Cr, La, Co, Th, Cs, Sb, Sc, Sm, Hf, Eu and Tb) in the herbs were determined. Possible links between pharmacological
action of the herbs and content of some elements were also discussed in this paper. The measured results were compared with
the reported values in literature. |
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