Determination of trace mercury in seafoods by microwave digestion-hydride generation-atomic fluorescence spectrometry

Objective:To establish an analytical method for the determination of mercury in aquatic products by hydride generation-atomic fluorescence spectrometry with microwave digestion.Methods:After the sample was pretreated by microwave digestion,the analysis was carried out by the atomic fluorescence spectrometry for the determination of trace mercury using potassium borohydride as a reducing agent,5% hydrochloric acid as the carrier and argon as the carrier gas.Results:The linearity of the method was good in the range of 0.1 μg/L～10.0 μg/L with a correlation coefficient of 0.9990.The RSDs were between 1.7% to 8.8%.Validation was performed by analysis of seaweed reference materials(GBW10023) and yellow-fin tuna reference material(GBW08573).The measured results were in good agreement with the certified values.Conclusion:This method is simple,sensitive,accurate and suitable for the determination of mercury in seafood.