Abstract: PF6-2 non-chromatic dispersion atomic fluorescence photometer was used for determination of trace selenium in duck eggs. Through the choice of the clearing up solution, pre-reducing agent, medium acid, the test conditions are optimized, and on this base, the limits of detection, precision and the standard addition recovery are determined. The results show that the calibration curves were linear in the range from 0 to 8 μg·L^-1 with the correlation coefficient 0.999 42, and the limits of detection were 0.01 μg·L^-1. At the different adding levels for selenium, the recoveries of dark eggs were 83%~100% and the relative standard deviation was 3.80%. This method is of the characteristics of low cost, simple operation and high sensitivity, and has important referential significance for the determination of selenium in eggs.

Key words: selenium, duck egg, non-chromatic dispersion atomic fluorescence photometer