ICP-MS analysis on inorganic elements in Polygoni Multiflori Radix from different habitats and commercial herbs / 中草药

ABSTRACT

Objective: To establish a method for simultaneous analysis on the inorganic elements in Polygoni Multiflori Radix. by inductively coupled plasma mass spectrometry (ICP-MS) and compare the inorganic elements in Polygoni Multiflori Radix between different origin and commercial herbs. Methods: The sample solutions were analyzed by ICP-MS after microwave digestion. The data of correlations, principal components, and cluster were analyzed with the SPSS 16.0 software. Results: Twenty four inorganic elements in Polygoni Multiflori Radix were determined. And there were some correlations among the inorganic elements in Polygoni Multiflori Radix. The contents of K, Fe, Mg, Ca, and P were abundant. The content of heavy metals and harmful elements should be caused for concern. Six main factors were selected by principal component analysis (PCA). The PCA results showed that Fe, Si, Ca, Al, K, Be, Sb, Mn, Zn, and Ba may be the characteristic elements in Polygoni Multiflori Radix. Conclusion: This experiment provides the evidence for the quality control and safety evaluation of Polygoni Multiflori Radix.