火焰原子吸收光谱法测定资木瓜中的微量元素

目的测定资木瓜的微量元素含量,为资木瓜的综合利用提供理论依据。方法用HNO3＋HClO4对资木瓜进行湿法消解,用空气-乙炔火焰原子吸收光谱法测定资木瓜中Fe,Ca,Cu,Zn,Mg等5种微量元素的含量。结果资木瓜的Fe,Ca,Cu,Zn,Mg含量分别为48.55～89.52μg/g,3070.13～4020.02μg/g,1.64～6.56μg/g,12.83～16.03μg/g,3876.65～4967.94μg/g,回收率为91.14%～101.26%。结论资木瓜含有大量人体必需的Fe,Ca,Cu,Zn,Mg等微量元素,含量测定方法简单、快速,结果令人满意。

Determination of Trace Elements in Chaenomeles Lagenaria (Loisel) Koidz. by Flame Atomic Absorption Spectrometry

Objective To determine the content of trace elements in Chaenomeles lagenaria（Loisel） Koidz.and to provide the theoretical basis for its comprehensive utilization.Methods Chaenomeles lagenaria（Loisel） Koidz.was treated by wet decomposition with HNO3 ＋ HClO4.The content of five kinds of trace elements including Fe,Ca,Cu,Zn and Mg in Chaenomeles lagenaria（Loisel） Koidz.was determined by air-acetylene flame atomic absorption spectrometry.Results The contents of Fe,Ca,Cu,Zn and Mg in Chaenomeles lagenaria（Loisel） Koidz.were 48.55-89.52,3 070.13-4 020.02,1.64-6.56,12.83-16.03 and 3 876.65-4 967.94 μg /g respectively.The recovery rate was from 91.14% to 101.26%.Conclusion Chaenomeles lagenaria（Loisel） Koidz.contains abundant trace elements of Fe,Ca,Cu,Mn,Zn and Mg indispensable to human body.This determination method is simple,quick and satisfying.