Abstract
A method is presented for the determination of silver in seawater by graphite furnace atomic absorption spectrometry after solvent extraction and microscale back-extraction. Silver is quantitatively extracted with 2× 10-4mol l-1 dithizone-benzene from seawater, and back-extracted with 100μl of nitric acid. The aqueous phase is taken by a fine glass tube; then a 10μl aliquot of the solution is injected into the graphite tube. This procedure has been applied to the determination of silver in coastal seawater.
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