Trace Elements Characteristic Based on ICP-AES and the Correlation of Flavonoids from <italic>Sparganii rhizoma</italic>.

The aim of the present work was to investigate the trace elements and the correlation with flavonoids from <italic>Sparganii rhizoma</italic>. The ICP-AES and ultraviolet-visible spectroscopy were employed to analyze trace elements and flavonoids. The concentrations of trace elements and flavonoids were calculated using standard curve. The content of flavonoids was expressed as rutin equivalents. The cluster analysis was applied to evaluate geographical features of <italic>S. rhizoma</italic> from different geographical regions. The correlation analysis was used to obtain the relationship between the trace elements and flavonoids. The results indicated that the 15 trace elements were measured and the K, Ca, Mg, Na, Mn, Al, Cu, and Zn are rich in <italic>Sparganii rhizome</italic>. The different producing regions samples were classified into four groups. There was a weak relationship between trace elements and flavonoids. [ABSTRACT FROM AUTHOR]