Solid Phase Extraction Trace Lead Using Amberlite Xad-2000 Resins Prior To Determination By Flame Atomic Absorption Spectrometry

A method for the determination of the trace lead (II) in aqueous by flame atomic absorption spectrometry with solid phase extraction using Amberlite XAD-2000 resins was proposed. Resins life and the effects of various parameters such as pH, type and concentration of eluent, volume of eluent and sample, flow rate of sample and eluent, coexisting ingredients were studied. Under the optimum conditions, the capacity of the adsorbent for lead was 7.2 mg g(-1) and the recovery from the resin was 92%. The preconcentration factor was calculated as 100. The detection limit by three sigma was 3.0.mu g L-1(n=10). The presented procedure was applied to the determination of trace lead in tap, phreatic and river water with successfully results.