Abstract
The determination of manganese(II) in natural water and effluent streams, using a solid-phase reactor incorporated into a flow-injection system, was investigated. Mn 2+-ions in samples injected into a carrier stream, were oxidised by solid lead(IV) dioxide suspended on silica gel beads to form MnO 4 −-ions which were detected spectrophotometrically at 526 nm. The linear range of the system is between 1 to 5 mg l −1 with a detection limit of 0.56 mg l −1. The proposed system is suitable for the determination of manganese(II) in natural water and effluent streams with a relative standard deviation of better than 1.8%.
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