Preconcentration of Cadmium, Lead, Copper, Zinc and Manganese with Polystyrene Divinylbenzene Copolymer Containing Dithiocarbamate Group, and Determination with FAAS

Abstract

This study aimed to synthesize a new dithiocarbamate derivative resin with Amberlite XAD-4, which is a polysterene divinylbenzene copolymer. The applicability of this new resin was investigated for the preconcentration of Cd(II), Pb(II), Cu(II), Zn(II) and Mn(II). Metal ions sorbed on functionalized Amberlite XAD-4 resin were eluted with 1 mol L-1 HNO3, and were determined with flame atomic absorption spectrometer (FAAS). The effects of parameters such as pH, sample flow rate, sample volume, type and the concentration of the elution solution and foreign ions were examined and optimum conditions were outlined. The recovery of the metal ions from aqueous solutions was determined to be higher than 95% in the range pH 4-5. The limit of detection was determined as 0.0032; 0.0055; 0.0069; 0.0075; 0.0043 μg mL-1 for Cd(II), Pb(II), Cu(II), Zn(II) and Mn(II) ions, and the limit of quantification was 0.0079, 0.0159, 0.0188, 0.0254 and 0.0160 μg mL-1 for these ions respectively. The accuracy of the method was tested with a variety of certified reference materials (SLRS4, MESS-3, DOLT-4). The method was successfully applied to river and sea water samples.