Microwave digestion-atomic fluorescence spectrometry of Selenium in Ferment

Established using hydride generation atomic fluorescence spectrometry essence of heavy metals like mercury,studied pre-treatment methods and experimental results of atomic fluorescence instruments for the impact of the finalization of the digestion reagent 6:2 nitric acid and hydrogen peroxide microwave digestion maximum temperature of 180 ℃,digestion time of 25 min;atomic fluorescence of the reducing agent for the 15 g/L of potassium borohydride,carrier liquid for 5% hydrochloric acid.Using the above optimum conditions,the reaction essence was measured to be the detection limit of mercury 0.1 μg/L,the relative standard deviation of 0.15%～1.6% and the recovery ranges from 91% ~ 106%.