不同月份栽培藏木香微量元素的含量测定及动态分析

采用火焰原子吸收光谱法对不同月份栽培藏木香中Cu、Zn、Fe、Mn、Ca、K、Mg和Na8种微量元素进行了分析测定。结果表明,在选定的测定条件下,栽培藏木香中各元素间相互干扰小,对测定无明显影响。方法的标准曲线线性关系良好(r=0.997 3~0.999 9),方法回收率(n=7)在97.5%~100.3%之间,RSD值(n=7)在1.16%~2.76%之间。栽培藏木香中K、Ca、Mg含量较高且不同月份微量元素含量有所不同,其中Zn、Cu、Mn含量基本稳定;K、Na、Ca、Mg、Fe等元素含量呈现较大幅度的变化趋势。研究结果为合理利用藏木香资源提供了可靠依据。

Determination and Dynamic Analysis of Trace Elements in Cultivated Inula racemosa Hook.F in Different Months

The content of eight trace elements such as Cu, Zn, Fe, Mn, Ca, K, Mg and Na in Cultivated Inula racemosa Hook. F in different months was determined by flame - atomic absorption spectrometry. The experimental results show that the interaction of the elements was small under the conditions of determination, and no significant effect on the result. The linear correlations of standard curves are good （r=0. 997 3 -0. 999 9）. The recovery （n =7） is 97.5% - 100. 3% , and the RSD （ n = 7） is 1.16% - 2.76%. The content of K, Ca and Mg in Cultivated Inula racemosa Hook. f was abundant and there are considerable differences of the contents of the eight trace elements in Cultivated lnula racemosa Hook. f; the contents of Zn, Cu, Mn was fundamentally stable; and the content of K, Na, Ca, Mg, Fe fluctuated in a large range. The data provide an accurate and credible evidence for reasonable medicinal use of this resource.