Determination of iron, cobalt, nickel and copper in a zirconium-based glass by electrothermal atomic absorption spectrometry

Abstract

By dissolving a zirconium-based fluoride glass in a solution of zirconium oxychloride, ZrOCl₂·8H₂O, the direct determination of Fe, Co, Ni and Cu was achieved by electrothermal atomic absorption spectrometry. The accuracy of results obtained from solution analysis was confirmed using a preconcentration method carried out independently. The average precision of measurements (relative standard deviation) for all the elements was <10% and the methodological detection limits for Fe, Co, Ni and Cu, based on the preconcentration technique, were 0.05, 0.04, 0.1 and 0.04 ng g^–1, respectively.