AN INVESTIGATION ON THE EXTRACTION CONCENTRATION OF MICROELEMENTS FROM AQUEOUS SOLUTION FOR ATOM-ABSORBTION ANALYSIS

Igor KOBASA, Vasyl BILOGOLOVKA, Mariya VOROBETS, Oxana PANIMARCHUK

Abstract

Some  sodium  diethyldithiocarbamate  and  8-oxyquinoline  based  mixtures  were  tested  as potential  extractant  to  concentrate  solutions  containing  ions  of  Cu2+, Co2+, Pb2+, Ni2+, Zn2+, Fe3+, Cd2+ while preparing the samples for atom-absorption analysis. The mixture of butylacetate/sodium diethyldithiocarbamate has shown the best performance. The method of the metal ions determination that combines the sample concentration using this extractant followed by the flame atom-absorption spectroscopy provides high sensitivity and selectivity  outperforming characteristics as compared to the classical method of evaporation the concentration of samples.

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