Selective extraction of Pb(II) using triethylenetetramine-modified polystyrene-divinylbenzeneresin

Polystyrene-divinylbenzene contained cyclic triethylenetetramine (teta-ps-dvb) was prepared and employed as selective sorbent for the extraction of pb(ii) in aqueous solution. the sorption performance of pb(ii) in single metal solution was similar to that obtained by binary metal solutions (pb(ii) with co(ii),cr(ii),cu(ii),ni(ii),and zn(ii)) indicating the high selectivity of the sorbent. under optimal conditions,60 min was utilized for adsorption of pb(ii) on the sorbent in batch method and the kinetics of sorption fitted well with pseudo-second order rate. the adsorption isotherm obeyed the langmuir model. the method could be applied for the extraction of pb(ii) from cement-base leachate sample with the percentage sorption of 82.3,the percentage of desorption of ~100% and the relative standard deviation of 2.2 %.