A multi-element solid-phase extraction method for trace metals determination in environmental samples on Amberlite XAD-2000.
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).
Bulut
Volkan Numan
VN
Department of Chemistry, Giresun Faculty of Arts & Sciences, Karadeniz Technical University, 28049 Giresun, Turkey.
Gundogdu
Ali
A
Duran
Celal
C
Senturk
Hasan Basri
HB
Soylak
Mustafa
M
Elci
Latif
L
Tufekci
Mehmet
M
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
D019216:Metals, Heavy; D011137:Polystyrenes; D012117:Resins, Synthetic; D014874:Water Pollutants, Chemical; D004050:Ditiocarb