Abstract
8-Hydroxyquinoline immobilized on a porasil B silica substrate (37–75 μ) has been synthesized and applied to the preconcentration of trace metals from seawater. 900 ml aliquots of filtered seawater, adjusted to pH 8.0, were passed through a column consisting of a 1 cm bed of the immobilized chelate at flow rates up to 40 ml min −1. Cd, Pb, Cu, Ni, Zn, Mn and Co are quantitatively recovered from the bed by elution with 10 ml of a solution of 1 M HCl 0.1 M HNO 3. Trace metals in this eluate are quantitated against a matrix matched standard using graphite furnace atomic absorption spectrometry. Analyses of two near-shore seawater samples as well as a deep sea sample were carried out.
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