不同产地温郁金块根与茎叶中微量元素的含量测定

Determination of Metal Elements of Curcuma wenyujin Raw Products/Stems and Leavesin Different Regions

目的:建立不同产地温郁金微量元素含量的测定方法,对茎叶和块根中As、Ca、Cd、Fe、Cu、Hg、Mn、Pb和Zn微量元素的含量进行分析,探究元素在温郁金块根与茎叶中的分布。方法:用浓硝酸微波消解处理样品,电感耦合等离子体原子发射光谱法测定9种微量元素的含量,并采用SPSS 19.0统计学软件进行相关性分析。结果:温郁金块根与茎叶中7种微量元素含量存在差异;块根中As与Ca、Ca与Cu、Cd与Mn、Cd与Zn、Cu与Mn元素之间均呈显著正相关,Cd与Fe呈显著负相关;不同元素在块根和茎叶两个部位中,除As、Mn元素以外,整体趋势呈负相关。结论:该方法简便、准确,可很好地用于比较不同产地温郁金块根与茎叶中微量元素含量,并为温郁金微量元素的控制、扩大药用部位提供参考与依据。

Objective：To establish a determination method about metal elements of Curcuma wenyujin in different re- gions and carry on the analysis to the content in the raw products/stems and leaves＇As, Ca, Cd, Cu, Fe, Hg, Mn, Pb and Zn metal elements and explore the distribution of elements in raw product/stems and leaves. Methods ： The contents of 9 metal elements were determined by ICP - OES with concentrated nitric acid microwave digestion and the correlation analysis was carried out by using SPSS 19 statistical software. Results ：There are 7 kinds of metal elements contents existing differences between Curcuma wenyujin raw products/stems and leaves^s and Ca, Ca and Cu, Cd and Mn, Cd and Zn, Cu and Mn in raw products all showed a significant positive correlation. Cd and Fe were obviously negatively correlated. The overall trend of different elements in raw products/stems and leaves was negatively correlated besides As and Mn. Conclusion： The method which can be used for the determination about the content of metal elements in Curcuma wenyujin raw prod- ucts/stems and leaves is simple and accurate. Moreover, it can provide the reference and basis for control of the metal ele- ments and expanding medicinal partsin Curcuma wenyujin.