荔枝果实中微量元素测定的研究

研究了电感耦合等离子体发射光谱法同时测定荔枝果实中多种微量元素的条件；测定了东莞地区不同生长时期三月红品种荔枝中Al，Ba，Cr，Mg，Mn，Sr，Mo，Pb，Se，Zn，Fe，Cu，Ca等十三种元素在果皮、果核、果肉中的分布，方法的相对标准偏差介于1.3%-4.9%，平均回收率为89%-124%，分析结果较为满意；同其它地区荔枝进行比较，发现东莞地区荔枝果实中Mo元素的含量明显低于其它地区，为合理施肥和充分利用土壤肥力提供植株方面的发展。荔枝果实中锌、铁、镁、钙等人体必需生命元素含量较高，提示了这一水果品种较高的营养价值。

Determination of Trace Elements in Lychee of Different Growth Periods

Conditions for determination of multi trace elements simultaneously in lychee fruit by ICP AES. Al,Ba,Cr,Mg,Mn,Sr,Mo,Pb,Se,Zn,Fe,Cu and Ca in different parts and different growth periods of lychee fruit in Dongguan area were determined,relative standard deviation of the method is between 1 3%-4 9%,and recovery is between 89%-124%,analytical results were satisfactory.And compared the concentration and distribution of those trace elements with those in other areas. We find that the concentration of Mo in lychee fruit sample we determine is much lower, which implies that we can improve the production and quality of lychee by applying Mo to the tree.Some elements essential to human such as Zn,Fe,Mg and Ca are high in lychee fruit,implied that nutritive value of this fruit breed is higher.