黄芪中As和Hg的微波消解——双道原子荧光分光光度同时测定法

目的建立微波消解——双道原子荧光分光光度（AFS）法同时测定中药黄芪中As和Hg的检测方法。方法研究了黄芪微波消解的条件,通过实验确定了原子荧光光谱分析的最佳条件。结果 As和Hg的线性关系良好,两元素的检出限均达到《中国药典》相关要求,重现性和加标回收实验表明方法精密度和准确度良好。结论微波消解-AFS法同时测定黄芪中As和Hg具有准确、快捷、精度高等优点,用该方法分析了20份黄芪样品中的As和Hg含量,得到了满意的结果。

Microwave Digestion-AFS Method for Simultaneous Determination of As and Hg in Astragalus

[Objective]To establish microwave digestion-AFS method for simultaneous determination of As and Hg in astragalus.[Methods]The conditions for microwave digestion of astragalus were studied,optimum condition for atomic fluorescence spectrometry was identified via experiments.[Results]The linear relationship between As and Hg was good,the detection limits both met relevant requirements of ＂Chinese Pharmacopoeia＂.Repeatability and standard recovery test showed the method had good precision and accuracy.[Conclusion]The microwave digestion-AFS method for simultaneous determination of As and Hg in astragalus is Aaccurate,fast,with high precision.The determination results of As and Hg content in 20 samples of astragalus are satisfactory by using this method.