The Separation of Silver from Seawater by Adsorption Colloid Flotation

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Abstract
ACF was used to preconcentrate silver from spiked seawater samples by a collector-surfactant-inert gas system consisting of lead sulfide, stearyl amine, and nitrogen. Analysis was conducted in MIBK following complexation of the silver with TOTP and in an aqueous matrix with an atomic absorption unit. Replicate samples in the MIBK matrix yielded a mean recovery of 73.5% with a relative standard deviation of 18.4%; those conducted in an aqueous matrix and a mean recovery of 91.8% and a relative standard deviation of 8.1%. Silver in a seawater sample can be filtered, preconcentrated, and analyzed in approximately one hour.