微波消解-原子荧光光谱法测定耳草中四种重金属元素含量  

Determination of Heavy Metal Elements in Ercao by Using Microwave Digestion - Atomic Fluorescence Spectrometry

作　　者：蓝海英[1] 丁冶春[2] 范小娜[1] 范会员[1] 张超[2] 

机构地区：[1]赣南医学院基础医学院,江西赣州341000 [2]赣南医学院药学院,江西赣州341000

出　　处：《广东微量元素科学》2013年第6期19-22,共4页Trace Elements Science

摘　　要：目的测定耳草中4种金属元素含量。方法采用微波消解-原子荧光光谱法测定了中药材耳草中砷、汞、硒、镉的含量。结果在最佳实验条件下,砷、汞、硒、镉的检出限分别为0.305、0.016、0.082、0.039 ng/mL,样品中4种元素的加标回收率在97.2%～105.4%之间。结论该法快速、准确、简便且准确度高,为中药材中重金属含量的测定提供了较好的方法。Objective Ercao four kinds of heavy metals concentrations. Methods The contents of four elements arsenicum （As）, mercury （Hg）, selenium （Se） and cadmium （Cd） in ercao were determined by using microwave digestion - atomic fluorescence spectrometry. Result The results showed that under the optimum experimental condition, the detection limits of As, Hg, Se, Cd four elements were 0. 305, 0. 016, O. 082 and 0. 039 ng/mL resp. And their recoveries were 97.2% - 105.4%. Conclusions The method is easy, quick, accurate with a higher sensitivity, which can be used in the quantitative determination of heavy metal elements in Chinese traditional medicines with a satisfactory result.

关 键 词：微波消解-原子荧光光谱法 耳草 砷 汞 硒 镉 

分 类 号：O657.31[理学—分析化学]