ICP-OES法测定巴旦木种仁中无机元素的研究

Inorganic Elements in Kernel of Amygdalus communis L. with ICP-OES Method

[目的]研究维药巴旦木种仁中无机元素的含量分布特征,为巴旦木的品种质量评价提供新的试验方法和科学依据。[方法]采用电感耦合等离子发射光谱法(ICP-OES)同时测定巴旦木种仁中的26种无机元素Al、B、Be、Ca、Co、Cu、Fe、Mg、Mn、Mo、Na、Ni、P、Pb、Si、Sn、Sr、Ti、Zn、Cd、As、Se、V、Hg、Cr、K的含量,并用主成分分析法对测定结果进行分析。[结果]不同种及不同厂家的巴旦木种仁中无机元素的含量呈现相似的谱图排列,各元素的绝对含量存在显著差异;经主成分分析得出5个主因子,其累计方差贡献率达84.371%,第一、二和三主因子的方差贡献率为67.546%,故它们所对应的Fe、Ti、Pb、Na、Se、Cu、Mo、K、Zn、Ni、Ca、Sr是巴旦木种仁中的特征元素。[结论]该方法简便、快速、准确,适于分析测定维药巴旦木种仁中的无机元素,也为更好的开发和利用巴旦木药用资源提供了理论依据。

[ Objective ] The aim was to study on distribution of inorganic elements in kernel of Amygdalus communis L. , providing references for quality evaluation of Amygdalus communis L. species. [ Method ] Totaling 26 species of inorganic elements in kernel, including A1, B, Be, Ca, Co, Cu, Fe, Mg, Mn, Mo, Na, Ni, P, Pb, Si, Sn, Sr, Ti, Zn, Cd, As, Se, V, Hg, Cr and K were measured with inductively coupled plasma emission spectrum （ICP-OES） and principal components analysis （PCA）. [ Result] Amygdalus communis L. of different spe- cies and in different factories showed the similar curve in content of inorganic elements ; absolute contents of the elements differed significantly. In addition, the accumulated variance contribution of five principle factors achieved as high as 84.371% and the variance contribution made by the first three factors accounted for 67. 546% , proving that Fe, Ti, Pb, Na, Se, Cu, Mo, K, Zn, Ni, Ca and Sr are characteristic ele- ments. [ Conclusion ] The method, brief, rapid and accurate, can be used for determination of inorganic elements in kernel of Amygdalus com- munis L. , providing theoretical references for further development and utilization of Amygdalus communis L..