Abstract:In this study，a method for determining mercury forms in aquatic products using bromination agents as organic mercury digesters and micro-hydride generation-atomic fluorescence spectrometry was established.A single factor experiment was conducted to explore the effects of reducing agent concentration，hydrochloric acid concentration，lamp current，negative high voltage，oxidant dosage，and oxidation time on mercury fluorescence intensity.Following optimization experiments，it was determined that the best conditions for the efficiency of oxidizing organic mercury were the use of 0.5 mL brominating agent（30 g/L potassium bromide and 10 g/L potassium bromate）and a digestion time of 40 min.Under optimal conditions，the detection limit of the method was 0.014 0 ng/mL，the relative standard deviation was between 1.5% and 6.2%，and the recovery rate of standard addition was between 86% and 101%，which were suitable for detecting organic mercury in aquatic products.