厚朴植物叶中金属元素的含量测定

Determination of Metal Elements in the Leaves of Magnolia officinalis by Flame Atomic Absorption Spectrometry

[目的]测定厚朴叶中Ca、Mg、Fe、Zn、Cu和Mn 6种金属元素含量。[方法]采用浓硝酸-高氯酸(5∶1,V/V)溶解消化处理样品,火焰原子吸收光谱法测定厚朴叶中Ca、Mg、Fe、Zn、Cu和Mn 6种金属元素含量。[结果]厚朴花中Ca、Mg、Fe、Zn、Cu和Mn6种微量元素含量分别为580.572、78.63、177.211、6.7、1.02和8.25 mg/kg。[结论]采用原子吸收光谱法测定厚朴花中金属元素含量,操作简便、快速,结果准确,为探讨厚朴叶中金属元素含量与药理关系提供了有用的数据。

[Objective] To determine the content of six metal elements like Ca,Mg,Fe,Zn,Cu and Mn in M.officinalis leaves.[Method] Digested with HNO3-HCIO4 mixed acid（5∶1,V/V）,the content of Ca,Mg,Fe,Zn,Cu and Mn in M.officinalis leaves was determined by flame atomic absorption spectrometry（FAAS）.[Result] The content of Ca,Mg,Fe,Zn,Cu and Mn in M.officinalis leaves was 580.57,278.63,177.21,16.70,1.02 and 8.25 mg/kg,respectively.[Conclusion] The FAAS method is simple,rapid and accurate to determine the content of six metal elements in M.officinalis leaves.The study can provide useful data for exploring the relationship between the content of metal elements and pharmacological actions in M.officinalis leaves.