Preconcentration and separation with Amberlite XAD-4 resin; determination of Cu, Fe, Pb, Ni, Cd and Bi at trace levels in waste water samples by flame atomic absorption spectrometry
A. Uzun et al., Preconcentration and separation with Amberlite XAD-4 resin; determination of Cu, Fe, Pb, Ni, Cd and Bi at trace levels in waste water samples by flame atomic absorption spectrometry, TALANTA, 54(1), 2001, pp. 197-202
A method for the preconcentration of Cu, Fe, Pb, Ni, Cd and Bi as their die
thyldithiocarbamate chelates was proposed using a column filled with Amberl
ite XAD-4 resin. The retained analytes on the resin were recovered with a s
mall volume of acetone. The metal ions in the effluent were determined by a
flame atomic absorption spectrometer. Different factors including pH of sa
mple solution, sample volume, amount of XAD-4 resin, amount of ligand, elue
nt volume and matrix effects for preconcentration were examined. The recove
ries fur the analytes under the optimum working conditions were higher than
95%. The relative standard deviations of the determinations were below 9%.
The limits of detection (3 s, n = 20) for analytes were found to be betwee
n 4 and 23 mug l(-1). The proposed method was applied to the analysis of so
me waste waters from the organized industrial region of Kayseri. (C) 2001 E
lsevier Science B.V. All rights reserved.