title: A multi-element solid-phase extraction method for trace metals determination in environmental samples on Amberlite XAD-2000.
abstract: A method for the preconcentration of some transition elements at trace level was proposed using a column filled with Amberlite XAD-2000 resin. Metal ions were adsorbed on XAD-2000 as their diethyldithiocarbamate chelates, then analytes retained on the resin were eluted by 1 mol L(-1) nitric acid in acetone and determined by flame atomic absorption spectrometry (FAAS). The influences of some analytical parameters including pH of sample solution, ligand amount, the type, concentration and volume of elution solution, flow rates of the sample and eluent solutions, adsorption capacity of the resin and sample volume on the preconcentration efficiency have been investigated. The influences of some matrix elements were also examined. The detection limit (N=20, 3 sigma) for Mn(II), Fe(II), Co(II), Cu(II), Cd(II), Zn(II), Pb(II) and Ni(II) were found as 0.20, 0.35, 0.25, 0.20, 0.20, 0.15, 0.45 and 0.25 microg L(-1), respectively. The validation of the procedure was carried out by analysis of certified reference materials. The proposed method was applied to natural waters and kale vegetable (Brassica oleracea var. acephala).
authors.affiliation: Department of Chemistry, Giresun Faculty of Arts & Sciences, Karadeniz Technical University, 28049 Giresun, Turkey.
authors.forename: Volkan Numan
authors.initials: VN
authors.lastname: Bulut
authors.forename: Ali
authors.initials: A
authors.lastname: Gundogdu
authors.forename: Celal
authors.initials: C
authors.lastname: Duran
authors.forename: Hasan Basri
authors.initials: HB
authors.lastname: Senturk
authors.forename: Mustafa
authors.initials: M
authors.lastname: Soylak
authors.forename: Latif
authors.initials: L
authors.lastname: Elci
authors.forename: Mehmet
authors.initials: M
authors.lastname: Tufekci
mesh_terms: D001937:Brassica / Q000737:chemistry*; D004050:Ditiocarb / Q000737:chemistry; D004784:Environmental Monitoring; D006863:Hydrogen-Ion Concentration; D019216:Metals, Heavy / Q000032:analysis* / Q000737:chemistry; D011137:Polystyrenes / Q000737:chemistry; D012117:Resins, Synthetic / Q000737:chemistry; D052616:Solid Phase Extraction; D014421:Turkey; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000737:chemistry
chemical_list: D019216:Metals, Heavy; D011137:Polystyrenes; D012117:Resins, Synthetic; D014874:Water Pollutants, Chemical; D004050:Ditiocarb