高压罐消解-氢化物发生原子荧光法测定花生中硒含量的研究

目的]对以花生样品为代表的油脂类农产品的测定方法进行改进。结果]采用高压罐消解一氢化物一原子荧光光谱法对花生中硒进行消解、测定。方法]建立花生高压罐消解的最佳分析条件，确定原子荧光光谱仪的参数设置和最佳氢化反应条件。方法的检出限为0．2μg／L，线性范围为0～100ng／ml，相关系数r为0．9999，回收率为96．6％-100．0％。结论]该方法可用于油脂类含量较高的花生等农产品中硒含量的测定。

Determination of Selenium in Peanut by Atomic Fluorescence Spectrometry with High Pressure Digestion

Objective]The research aimed to improve the determination of selenium in agricultural products with high oil and fats content such as peanut.Method] Selenium in peanut was determined by high pressure digestion-hydride generation-atomic fluorescence spectrometry.Result]The high pressure digestion for samples was used,and the optimum conditions for the digestion were developed.The detection limit was 0.2 μg/L,linear range was 0-100 ng/ml,the correlation(r) reached 0.999 9,and the recovery of selenium was 96.6%-100.0%.Conclusion]The method could be applied to detect the content of selenium in agricultural products with high oil and fats content such as peanut.