光谱学与光谱分析 |
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Content of Rare Earth Elements in Wild Hypericum Japonicum Thunb |
WEI Zhen-lin1, RUI Yu-kui2*, TIAN Zhi-huan1 |
1. Key Laboratory for Molecular Biology, Department of Biology, Dezhou University, Dezhou 253023, China 2. College of Resources and Environmental Sciences, China Agricultural University, Beijing 100094, China |
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Abstract Rare earth elements are important nutritional elements for human health, and today more and more attention has been paid to the effective components in Chinese traditional medicine, especially to rare earth elements. Fifteen rare earth elements in wild hypericum japonicum Thunb were analyzed by the methods of ICP-MS. The results showed that the concentrations of La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Yb, Tm, Lu and Y ranged from 6 ng·g-1·DW to 14 522 ng·g-1·DW, and among them the concentrations of La, Ce and Nd were higher than 2 000 ng·g-1·DW. Compared with the concentration of rare earth elements in rice, corn, wheat and barley, the total concentration of rare earth elements in hypericum japonicum Thunb was much higher, which could be the mechanism of curative effect of hypericum japonicum Thunb on liverish diseases. The character of elements and the content of rare earth elements in soil should be responsible for the difference, but the distributive mechanism of rare earth elements in hypericum japonicum Thunb should be further studied.
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Received: 2007-10-16
Accepted: 2008-01-20
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Corresponding Authors:
RUI Yu-kui
E-mail: ruiyukui@163.com
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