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[Research on inorganic elements of Asari Radix et Rhizoma from different localities and species].

OBJECTIVE
To explore the character of inorganic elements in Asari Radix et Rhizoma (Xixin).


METHOD
The contents of 53 inorganic elements in Xixin samples from different localities and species were determined by ICP-AES and ICP-MS. The statistical data were made using SAS.


RESULT
The result demonstrated that Xixin has the high contents of Fe, Cr, Li. It has been observed that the content of Cu and Pb of the samples are much higher than the standard level. The results of hierarchical cluster analysis revealed two groups which correspond with the species of the samples. No correlations between the contents of the inorganic elements and the localities of the samples were found. Some characteristic elements were displayed in some specific areas. The difference of the contents of the 53 inorganic elements between root and rhizome of Xixin was reported for the first time. The primary form of inorganic elements in Xixin has been studied for the first time. The result demonstrated that the extraction rate between different elements varied, with the average extraction rate of (22.25 +/- 24.96)%.


CONCLUSION
The inorganic elements analysis of Xixin can provide evidence of its identification, cultivation and application.