title: Solid phase extraction of Cu(II), Ni(II), Pb(II), Cd(II) and Mn(II) ions with 1-(2-thiazolylazo)-2-naphthol loaded Amberlite XAD-1180.
abstract: A new method for separation and preconcentration of trace amounts of Cu(II), Ni(II), Pb(II), Cd(II) and Mn(II) ions in various matrices was proposed. The method is based on the adsorption and chelation of the metal ions on a column containing Amberlite XAD-1180 resin impregnated with 1-(2-thiazolylazo)-2-naphthol (TAN) reagent prior to their determination by flame atomic absorption spectrometry (FAAS). The effect of pH, type, concentration and volume of eluent, sample volume, flow rates of sample and elution solutions, and interfering ions have been investigated. The optimum pH for simultaneous retention of all the metal ions was 9. Eluent for quantitative elution was 20 ml of 2 mol l(-1) HNO(3). The optimum sample and eluent flow rates were found as 4 ml min(-1), and also sample volume was 500 ml, except for Mn (87% recovery). The sorption capacity of the resin was found to be 0.77, 0.41, 0.57, and 0.30 mg g(-1) for Cu(II), Ni(II), Cd(II), and Mn(II), respectively. The preconcentration factor of the method was 200 for Cu(II), 150 for Pb(II), 100 for Cd(II) and Ni(II), and 50 for Mn(II). The recovery values for all of the metal ions were > or = 95% and relative standard deviations (RSDs) were < or = 5.1%. The detection limit values were in the range of 0.03 and 1.19 microg l(-1). The accuracy of the method was confirmed by analysing the certified reference materials (TMDA 54.4 fortified lake water and GBW 07605 tea samples) and the recovery studies. This procedure was applied to the determination of Cu(II), Ni(II), Pb(II), Cd(II) and Mn(II) in waste water and lake water samples.
authors.affiliation: Department of Chemistry, Faculty of Arts and Sciences, Erciyes University, 38039, Kayseri, Turkey. serifet@erciyes.edu.tr
authors.forename: Serife
authors.initials: S
authors.lastname: Tokalioğlu
authors.forename: Vedat
authors.initials: V
authors.lastname: Yilmaz
authors.forename: Senol
authors.initials: S
authors.lastname: Kartal
mesh_terms: D000327:Adsorption; D001391:Azo Compounds / Q000737:chemistry*; D002104:Cadmium / Q000737:chemistry*; D002614:Chelating Agents / Q000737:chemistry; D003300:Copper / Q000737:chemistry*; D004784:Environmental Monitoring / Q000295:instrumentation / Q000379:methods; D005618:Fresh Water / Q000032:analysis; D007854:Lead / Q000737:chemistry*; D008345:Manganese / Q000737:chemistry*; D015394:Molecular Structure; D009532:Nickel / Q000737:chemistry*; D012117:Resins, Synthetic / Q000737:chemistry*; D052616:Solid Phase Extraction / Q000295:instrumentation / Q000379:methods; D014874:Water Pollutants, Chemical / Q000032:analysis
chemical_list: D001391:Azo Compounds; D002614:Chelating Agents; D012117:Resins, Synthetic; D014874:Water Pollutants, Chemical; D002104:Cadmium; C054556:1-(2-thiazolylazo)-2-naphthol; D007854:Lead; D008345:Manganese; D003300:Copper; D009532:Nickel; C046797:amberlite