Comparative study for the separation, preconcentration, and determination of copper and cadmium in real samples by using two different ligands

Authors : Hamide Elvan BAYRAK, Volkan Numan BULUT, Mehmet TÜFEKÇİ, Hacer BAYRAK, Celal DURAN, Mustafa SOYLAK

Pages : 93-105

View : 13 | Download : 9

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :Two new solid phase extraction methods have been developed for simultaneous separation and preconcentration of Cuinsert ignore into journalissuearticles values(II); and Cdinsert ignore into journalissuearticles values(II); in some food and environmental samples before their determination by flame atomic absorption spectrometry insert ignore into journalissuearticles values(FAAS);. One of these methods is based on the absorption of the Cuinsert ignore into journalissuearticles values(II); and Cdinsert ignore into journalissuearticles values(II); complexes with [3-insert ignore into journalissuearticles values(cyanomethyl);-5-insert ignore into journalissuearticles values(4-methylphenyl);-4$H$-1,2,4-triazol-4-yl]carbamate insert ignore into journalissuearticles values(L1); and the other is based on the absorption of the Cuinsert ignore into journalissuearticles values(II); and Cdinsert ignore into journalissuearticles values(II); complexes with 4-insert ignore into journalissuearticles values(4-methylphenyl);-5-{[pyridine-4-yl-4$H$-1,2,4-triazole-3-yl);thio]methyl}-4$H$-1,2,4-triazole-3-thiol insert ignore into journalissuearticles values(L2); on Amberlite XAD-1180 resin. The metal complexes are retained on resin at pH 6.0 and eluted with 1.0 mol L$^{-1}$ HCl in acetone in both methods. After the optimum conditions were determined, the methods were applied to seawater, stream water, rice, lentil, tea, tobacco, bulgur, chickpea, wheat, red pepper, black pepper, peppermint, and dried eggplant samples in order to determine the levels of copper and cadmium.
Keywords : Preconcentration, solid phase extraction, heavy metal, flame atomic absorption spectrometry