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IJC-A Vol.47A(10) [October 2008]  >


Title: Extraction chromatographic method of preconcentration and separation of lead(II) with high molecular mass liquid cation exchanger, Versatic 10
Authors: Mandal, B
Roy, U S
Issue Date: Oct-2008
Publisher: CSIR
IPC CodeInt. Cl. ⁸ B01D15/04; G01N30/96
Abstract: A selective method has been developed for the extraction chromatographic separation of lead(II) with Versatic10 (liquid cation exchanger) coated on silanised silica gel. Its quantitative extraction has been achieved from 0.1M acetate buffer at the optimum pH 4.5-6.0. The effects of pH, flow-rate, stripping agents on extraction and elution have been investigated. Exchange capacity of the prepared exchanger at different temperatures with respect to lead(II) has been determined. The extraction equilibrium constant (Kex) and different standard thermodynamic parameters have also been calculated by temperature variation method. The effect of pH on Rf values in ion exchange paper chromatography has been investigated. Lead(II) has been separated from synthetic multi-component mixtures containing various metal ions associated with it in ores and alloy samples. The method effectively permits sequential separation of lead(II) from synthetic quaternary mixture containing its congeners Cu(II), Sn(II), Hg(II) and Cu(II), Cd(II), Bi(III) of the same analytical group. The method is found effective for removal and recovery of lead(II) from industrial waste and standard alloy samples following its preconcentration on the column. A plausible mechanism for the extraction of lead(II) has been suggested.
Page(s): 1497-1502
ISSN: 0376-4710
Source: IJC-A Vol.47A(10) [October 2008]

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