【摘要】 首次采用干法灰化--火焰原子吸收光谱法对干香菇中的Fe、Zn、Mg、Ca、Na、K、Cu等元素进行测定。加标回收率为95.0~102.5%,变异系数≤2.41%,特征浓度0.0044~0.074μg/mL/1%,检出限为0.00091~0.015μg/mL。结果表明,该方法操作简便、数据准确可靠、精密度高,适合于测定香菇中微量元素的含量。更多还原

【Abstract】 The trace elements including Fe,Zn,Ca,Mg,K,Na and Cu of dried mushrooms are pretreated by dry podzolic method and are determined by atomic absorption spectrometry for the first time.The recovery was 95.0%～102.5% and RSD≤2.41% with this method.The characteristic concentration 0.0044～0.074μg/mL/1% and the detection limit for the seven elements is in the range of 0.00091～0.015 μg/mL.This method is simple and the data is accurate.It can be used for determining the trace elements of mushrooms.更多还原