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M.S. El-Shahawi,A.S. Bashammakh,M.I. Orief,A.A. Al-Sibaai,E.A. Al-Harbi 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.1
The sorption profile of cadmium (II) ions from aqueous iodide media onto procaine hydrochloride(PQ+ㆍCl-) treated polyurethane foams (PUFs) solid sorbent was studied. PQ+ㆍCl- treated PUFs solidsorbent was found suitable and fast for Cd2+ uptake as [CdI4]aq2-. Thus, removal of Cd2+ at trace levels bythe sorbent packed columns was achieved. The sorbed Cd2+ species onto packed column were recoveredwith HNO3 (10.0 mL, 1.0 mol L-1) prior determination by inductively coupled plasma-optical emissionspectrometry (ICP-OES). Plot of Cd2+ ions concentration was linear in the range 0.05–15 mg L-1. Thelimits of detection and quantification of Cd2+ were found 0.01 mg L-1 and 0.033 mg L-1, respectively. Such limits could be improved to lower values by retention of Cd2+ species from large sample volumes ofthe aqueous phase at the optimized conditions. The relative standard deviation of the packed column forthe extraction and recovery of standard aqueous solutions (0.1 L) containing 1.0 and 5.0 mg L-1 (n = 3) ofCd2+ ions at flow rate of 5.0 mL min-1 were 1.98 and 2.9%, respectively. The method was validated byanalysis of Cd in certified reference materials (CRMs) IAEA-Soil-7 and TMDW water and wastewatersamples.