Preconcentration of metals at the trace level on amberlite XAD and determination atomic absorption spectrophotometry

ABSTRACTMaster ThesisMuharrem İNCEPRECONCENTRATION OF METALS AT THE TRACE LEVEL ON AMBERLİTE XADAND DETERMİNATİON ATOMIC ABSORPTİON SPECTROPHOTOMETRYFirat UniverstyGraduate School of Natural and Applied Sciences,Department of Chemistry2005, Page: 79Some heavy metals such as Ni, Cd, Pb and Co are being able to have toxic propertieseven at the trace level. Therefore, determination of their ultratrace concentrations of thesemetals in environmental and food samples.The addition of a preconcentration step to the analytical scheme is generally thechosen method due to the metals at the ppm level are being able to only determine by themethods like flame atomic adsorption spectrometry.In this study, a preconcentration method was achieved by using XAD-7 polimerikresine and PAR ligand. The data from this study, it was observed that the pH=2 for Cobaltand pH=5.5 for Nickel and Copper were found to be optimum pH. The optimized method wasapplied to the naturel mineral water samples. Concentrations at the range of 1.5-21 for Ni,0.4- 6.8 for Cu and 0.5-3.5 for Co were found.Keywords: Nickel, Copper, Cobalt, Naturel mineral water, Preconcentration, PAR, Flame AtomicAbsorption Spectrometry (FAAS)