摘要
目的运用火焰原子吸收光谱法测定中药土大黄根中的Fe、Zn、Mg、Ca等4种金属元素的含量。方法用浓HNO3-HClO4消解样品，采用标准曲线法测定其4种金属元素含量。结果所测的样品中含有丰富的人体必需微量元素，尤其是Ca含量极高。方法回收率在96．90％～102．3％之间，样品相对偏差小于5％。结论方法简单、准确，结果令人满意。
Objective The contents of Fe, Zn, Mg and Ca in rumex nepalensis were analyzed by flame atomic absorption spectrometry. Methods The sample was pretreated with HNO3 - HClO4 and measured quantitatively through calibration curve method. Results It was shown that the sample has rich in human essential metal elements. The recoveries are between 96. 90 % and 102. 3 %, and the relative standard deviation is less than 5%. Conclusion The result measured by this method is considered to be accurate.
出处
《广东微量元素科学》
CAS
2014年第8期15-18,共4页
Trace Elements Science
基金
江西省卫生厅中医药科研计划课题(2013A043)
赣南医学院课题(YB201319
QD201303)
