[Study on determination and principal component analysis of inorganic elements in Polygonum multiflorum from different areas].
OBJECTIVE
To explore the character of inorganic elements in Polygonum multiflorum.


METHODS
The contents of elements such as Al, B, Ba, Ca, Cu, Mn, Mg, Fe, Na, Ni, P, Se, Sr, Ti and Zn in nine P. multiflorum samples were determined by means of ICP-AEC. The results were used for the development of element distrubution diagram. The principal component analysis and one-way ANOVA of SPSS were applied for the study of characteristic elements in P. multiflorum.


RESULTS
The contents of Al, Ca, K, Mg, Sr,Ti in wild P. multiflorum were remarkable higher than those in cultured P. multiflorum, and there was no significant difference between cultured and wild in the other elements. Five principal components which accounted for over 90% of the total variance were extracted from the original data. The analysis results show that Al, B, Ba, Fe, Na, Ni, Ti, Ca and Sr may be the characteristic elements in P. multiflorum. The element distrubution diagram of the sample from Tianyang was remarkable different comparing with the others.


CONCLUSIONS
The principal component analysis could be used in data processing in inorganic elements.
Yan
Han-Jing
HJ
School of Life Science, Sun Yat-sen University, Guangzhou 510275, China.
Fang
Zhi-Jian
ZJ
D004602:Elements; D028502:Polygonum / Q000737:chemistry*; D025341:Principal Component Analysis / Q000379:methods*
D004602:Elements