[Content of rare earth elements in wild Hypericum japonicum Thunb].

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 x g(-1) x DW to 14 522 ng x g(-1) x DW, and among them the concentrations of La, Ce and Nd were higher than 2 000 ng x g(-1) x DW.

[Application of ICP-MS to detect rare elements in wild Cistanche deserticola Y. C. Ma].

Rare metals are important nutritional elements for human health. Fifteen rare metals in wild Cistanche deserticola Y. C.