摘要
目的运用火焰原子吸收光谱法测定中草药海金沙茎中的Fe、zn、Mg、Ca、Cu5种微量元素的含量。方法用浓HNO3-HCIO4消解样品，采用标准曲线法测定其5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。方法回收率在98.68％～104.4％之间，样品相对偏差小于5％。结论该法快速简便、重复性好、准确度好，适用于同类生物样品中微量元素的测定，结果令人满意。
Objective The contents of Fe, Zn, Mg, Ca and in Lygodium japonicum （ Thunb. ） Sw. were analyzed by flame atomic absorption spectrometry. Methods The samples were pretreated with HNO3 - HC104 and measured quantitatively through calibration curve method. Results It was shown that the samples has rich in human essential metal elements. The recoveries are between 98.68% and 104.4% , 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12期22-25,共4页
Trace Elements Science
基金
江西省教育厅科技项目(GJJ10698)
江西省卫生厅中医药项目(2011A153)
