桃浆中微量元素的湿法消解法和碳化酸溶法比较研究

Comparison Study on Determination of Trace Element Content in Peach Pulp between Wet Digestion Method and Carbonize Acid Dissolution Method

目的：测定桃浆中微量元素的含量。方法：采用火焰原子吸收光谱法测定不同前处理方法（湿法消解法和碳化酸溶法）,及不同比例HNO3＋HClO4混合酸消解的桃浆中Fe、Mn、Cu的含量。结果：用不同的前处理方法得出的含量不一致,桃浆中3种金属离子含量的顺序为：Fe〉Mn〉Cu,且回收率在92.6%-119.6%间,RSD〈2.86%。结论：该方法准确度高,稳定性好,结果准确可靠,同时证明桃浆中含有丰富的Fe、Cu、Mn,为进一步研究桃浆药理作用提供参考依据。

This study was aimed to determine trace elements in Peach pulp.The wet digestion method and carbonize acid dissolution method were applied to digest the sample,and flame atomic absorption spectroscopy was used to determine the content of trace elements（Fe,Cu,Mn） in Peach pulp.The results showed that the content is not consistent among different pretreatment methods.However,the metal ion content among these three methods are in the order of Fe Mn Cu,with the average recovery rate between 92.6% and 119.6%.The RSD is less than 2.86%.It was concluded that this method is with high accuracy and stability as well as reliable accurate results.It also proved that Peach pulp.is rich in Fe,Cu and Mn.It provides some useful information for further pharmacological study of Peach pulp.