[Analysis of inorganic elements in Bambusae Concretio Silicea based on inductively coupled plasma mass spectrometry]

Inductively coupled plasma mass spectrometry was employed to determine the content of 25 inorganic elements in Bambusae Concretio Silicea, and the elemental fingerprint was established according to the element content. SPSS 20.0 and SIMCA 14.1 were used for chemometric analysis. A total of 25 elements were detected in Bambusae Concretio Silicea, including boron(B), sodium(Na), magnesium(Mg), aluminum(Al), potassium(K), calcium(Ca), scandium(Sc), vanadium(V), chromium(Cr), manganese(Mn), iron(Fe), cobalt(Co), nickel(Ni), copper(Cu), zinc(Zn), gallium(Ga), arsenic(As), selenium(Se), zirconium(Zr), molybdenum(Mo), cadmium(Cd), indium(In), barium(Ba), plumbum(Pb), and bismuth(Bi), among which 13 elements were quantitative. The top three elements in terms of average content were K>Fe>Na, and the content of B, Na, Al, Ca, Fe, and Ba varied in different batches of Bambusae Concretio Silicea samples from different origins. The correlation coefficient between Ca and Mg was the highest, followed by that between Mn and Zn, both of which showed significant positive correlations. Therefore, it was hypothesized that there was a synergistic incremental relationship between Ca and Mg as well as between Mn and Zn. According to the results of principal component analysis, Fe, As, Ni, Cu, Mn, Na, Mg, Ca, Al, Ba, and B were the main elements of Bambusae Concretio Silicea. According to the results of orthogonal partial least squares-discriminant analysis, Cu, As, and Mn were the common differential elements of three origins, which suggested that the quantitative identification of Cu, As, and Mn could roughly distinguish the three batches of Bambusae Concretio Silicea samples. This study analyzed the elements and their content in different batches of Bambusae Concretio Silicea samples, aiming to provide theoretical support for exploring the pharmacodynamic material basis and mechanism of Bambusae Concretio Silicea and lay a foundation for the quality evaluation, safe application, and resource development and utilization of Bambusae Concretio Silicea.