ICP-AES法测定蒙古扁桃药材中微量元素

Determination of Trace Elements in Medicinal Materials of Prunus mongolica by ICP-AES

摘要:

目的: 测定蒙古扁桃种仁中Ca, Mg, Fe,Mn, Cu, Zn,Al, Sr, Sn等9种微量元素含量。 方法: 用湿法消解样品,同时做空白溶液,采用电感耦合等离子发射光谱(ICP-AES)法同时测定9种元素含量。 结果: 9种元素线性关系良好,相关系数均>0.999,方法检出限为0.000 7~0.089 μg·g^-1,RSD 0.30%~1.69%,加标回收率为93%~110%。 结论: 该方法快速、简便、数据准确可靠,为蒙古扁桃的综合开发利用提供科学依据。

Abstract:

Objective:To establish a method for determination of nine elements of Ca, Mg, Fe, Mn, Cu, Zn, Al, Sr, Sn and Pb in the kernels of Prunus mongolica. Method: The samples were digested by nitric acid and perchloric acid. The content of nine elements in the kernels of P. mongolica was determined by ICP-AES, a blank experiment was made at the same time. Result: The results showed that the linear relationship was good and the correlation coefficients were all greater than 0.999, and the detection limits was between 0.000 7-0.089 μg·g^-1. The recovery rate of ten elements was between 93% and 110%, and the relative standard deviation was between 0.30% and 1.69%. Conclusion: This method is fast, simple and accurate. It can provide a scientific basis for the comprehensive utilization of resources.