Potentiometric stripping analysis for mercury after preconcentration in a potassium permanganate trap

摘要: Abstract Water samples of total volume 0.5–5 l, containing mercury in the range 0.05–5 μg l-1 are oxidized with excess potassium permanganate and then reduced tin(II) chloride. The is transferred to 5–10 ml a dilute trap solution by cycling air through sample solution. mercury(II) content determined potentiometric stripping analysis. accuracy, precision detection limit technique discussed.