Akademik Veri Yönetim Sistemi
Reviews in Analytical Chemistry, cilt.29, sa.2, ss.93-106, 2010 (SCI-Expanded)
In the present work, a method has been described for the determination of copper and lead by flame atomic absorption spectrometry (FAAS) after preconcentration and separation in water by ion exchange resin and coflotation. Purolite S-940, that is a strong cation exchanger, was used for preconcentration and separation of the trace metals as the first method. Optimum metal uptake conditions were investigated using batch systems. These optimum conditions are: pH, contact time, the initial metal concentration and the amount of resin. Using results obtained from experiments of optimum conditions, Cu and Pb in water samples which were taken from ISKI (Water Authority for İstanbul) Kaǧithane and ISKI Biiyilk9ekmece were enriched and determined by FAAS. The second method is a preconcentration and separation using hexamethylendithiocarbomate as a chelating agent for colloid flotation Cu and Pb from water. The influences arising from pH, nitric acid concentration, amount of analytes, and sample volume on the recoveries were assessed. Cu and Pb in water samples which were taken from ISKI Kaǧithane and ISKI Büyüksekmece were enriched and determined by FAAS. Results of these two methods are compared. Our results showed that two methods were very effective but flotation results higher than ion exchange.