原子吸收光谱法测定野生樱桃李中微量元素

目的]建立野生樱桃李中微量元素含量的测定方法.方法]采用干灰化法对野生樱桃李进行样品前处理,原子吸收光谱法对野生樱桃李中Fe、Zn、Ca、Mg、K、Na、Cu和Mn等8种微量元素进行测定.结果]用火焰原子吸收光谱法测定野生樱桃李中微量元素的含量,加标回收率为95.0;～102.5;,变异系数≤2.41;,检出限为0.009～0.052 μg/mL.不同类型的野生樱桃李微量元素含量有所不同,NO10的钾、钠、铁的含量最高,NO2的钙、镁的含量最高,NO9的铜、锌含量最高,NO13的锰含量最高.结论]该方法操作简便、数据准确可靠,精密度高,适合于测定野生樱桃李中微量元素含量,可为进一步开发利用野生樱桃李奠定基础.

Determination of Trace Elements of Prunus divaricata L. by Atomic Absorption Spectrometry

【Objective】To set up a method for determining the trace element of Prunnus divaricata L.【Method】The trace elements including Fe,Zn,Ca,Mg,K,Na,Cu and Mn of Prunnus divaricata L.were pretreated by dry podzolic method and were determined by atomic absorption spectrometry.【Result】The recovery was 95.0%~102.5% and RSD≤2.41% with this method.The detection limit for the eight elements was in the range of 0.009~0.052 μg/m L.The content of trace elements was different in different types of Prunnus divaricata L.The content of K,Na and Fe in NO10 was the highest and the content of Ca and Mg was the highest in NO2.The content of Cu and Zn was extremely rich in NO9.As to NO13,it contained the largest amount of Mn.【Conclusion】This method is simple and accurate.It could be used for determining the trace elements of Prunnus divaricata L.,and laying the foundation for further development and utilization of Prunnus divaricata L.