Flame atomic absorption spectrometric determination of heavy metals in aqueous solution and surface water preceded by co-precipitation procedure with copper(II) 8-hydroxyquinoline

摘要: Co-precipitation procedure has widely been employed for preconcentration and separation of metal ions from the matrices environmental samples. This is simply due to its simplicity, low consumption separating solvent short duration analysis. Various organic ligands have used this purpose. However, there dearth information on application 8-hydroxyquinoline (8-HQ) as ligand Cu(II) carrier element. The use desirable because no contamination background adsorption interference. Therefore, objective study was 8-HQ in presence coprecipitation Cd(II), Co(II), Cr(III), Ni(II) Pb(II) standard solutions surface water prior their determinations by flame atomic absorption spectrometry (FAAS). effects pH, sample volume, amount interfering recoveries were monitored using FAAS. samples treated with under optimum experimental conditions concentrations determined not also determined. recovery values higher than 85.0%. (mg/L) Ni(II), 0.014 ± 0.002, 0.03 ± 0.01, 0.04 ± 0.02 0.05 ± 0.02, respectively. These those obtained without technique significantly different. Coprecipitation element enhanced matrix sample.