火焰原子吸收光谱法测定早熟禾中多种微量元素  

Determination of Five Trace Elements in Poa annua L.by Flame Atomic Absorption Spectrophotometry

作　　者：刘昭文[1] 杨凯[1] 郭小华[1] 李银保[1] 吴龙火[1] 

机构地区：[1]赣南医学院,江西赣州341000

出　　处：《广东微量元素科学》2015年第4期35-38,共4页Trace Elements Science

基　　金：国家自然科学青年基金资助课题(NO.81102797)

摘　　要：目的测定早熟禾中多种微量元素的含量。方法早熟禾样品用浓硝酸经过消解，采用火焰原子吸收光谱法测定Fe、Zn、Mg、Ca、Mn的含量。结果早熟禾中Ca的含量最高，为1872．6mg·kg^-1，其次为Mg、Fe、Zn、Mn。其回收率在101．00％～120．07％，RSD〈2％。结论作为中草药，早熟禾中的微量元素含量较为合理，可作为其质量研究的参考依据。该方法简便，准确，可信，重现性好。Objective To determine the contents of the trace elements in the Poa annua L. Methods The sample was digested by HNO3. Five trace elements including Fe, Zn, Mg, Ca and Mn in the samples were directly analyzed by flame atomic absorption spectrometry. Results It was showed that the content of Ca in the sample was the highest, followed by Mg, Fe, Zn, and Mn. In addition, the recoveries of these microelements were ranged from 101.00% to 120. 07%, and the RSD was less than 2%. Conclusion As one of the traditional chinese medicine, Poa annua contains reasonable percentage of the trace elements, which could be the reference to its qualification study. The method is simple, accurate, reliable and reproducible.

关 键 词：火焰原子吸收光谱法 早熟禾 微量元素 

分 类 号：O657.31[理学—分析化学]