Abstract:
DETERMINATION OF MERCURY BY FLAME LESS AAS The procedure outlined describes an extremely sensitive and accurate method for the determination of mercury down to 50.0 ppb in solution. The procedure has been adapted to biological samples such as fish, brains and moldy wheat. The sample is taken into solution using wet digestion and an oxidizing agent. Mercury is then reduced to an elemental state and aerated from the solution in a reaction flask. The mercury vapor posses through an absorption cell of an atomic absorption spectrophotometer where its concentration is measured. The procedure is practically free from interferences except in extreme cases of organic vapors and the method shows a positive error. Gary G. Lowrance August 1974
