目的建立微波消解-原子荧光法测定茶叶中硒的方法。方法样品经硝酸-双氧水微波消解后,用原子荧光光度计对其中的硒含量进行检测。结果在最佳实验条件下,硒的检出限为0.188μg/L,相对标准偏差<3.41%,用国家标准物质绿茶测定结果,回收率为92.0%～103.2%。结论该方法操作简单,精密度高,结果准确可靠,适用于茶叶中硒的测定。 Objective To establish a method for the determination of selenium in tea by microwave digestion - atomic fluorescence spectrometry. Methods The samples were subjected to microwave digestion with nitric acid-hydrogen peroxide and the content of selenium in them was detected by atomic fluorescence spectrophotometer. Results Under the optimal experimental conditions, the detection limit of selenium was 0.188μg / L, the relative standard deviation was 3.41%. The recovery rate was 92.0% -103.2% with the national standard green tea. Conclusion The method is simple, high precision, accurate and reliable, suitable for the determination of selenium in tea.