微波消解-原子荧光光谱法测定富硒精米中硒

Determination of Selenium-Rich Rice by Atomic Fluorescence Spectrometry with Microwave Digestion

摘要:
目的建立微波消解－氢化物发生原子荧光光谱法测定富硒精米中硒的方法。
方法富硒精米样品经微波消解后, 用氢化物原子荧光光谱法测定富硒精米中硒的浓度。
结果本法在硒浓度为0~10 μg/L范围有良好的线性关系, 相关系数r=0.9997, 检出限为0.002 mg/kg; 相对偏差为0.57%~2.7%;回收率为99.8%~101.0%。
结论该方法具有简便、快速、灵敏度高等优点, 适合日常批量检测。

Abstract:
Objectives To establish a method for determinations of Se in selenium-rich rice by atomic fluorescence spectrometry with microwave digestions.
Methods The selenium-rich rice was digested by microwave and Se in them was determinated by hydride generation-atomic fiuorescence spectrometry.
Results Linear range for the determination was 0~10 μg/L, the correlation coefficient was 0.9997, the detection limit was 0.002 mg/kg, with the RSD was 0.57%~2.7%. The recovery rate was 99.8%~101.0%.
Conclusions The method is simple, rapid and sensitive. It is suitable for the regular batch determination.